Before the X-15 flight program, there was considerable reservation about the pilots' ability to consistently land a power-off, low lift-drag ratio airplane. The X-15, however, had excellent handling qualities and large variable deflection speed brakes and it proved easy to land. All the pilots used a circling approach that commenced at 30,000 to 50,000 feet above the runway, and they stayed high on profile until assured that they would reach the runway, at which time speed brakes were used to descend onto a nominal glideslope. The landing gear was left retracted, for drag reduction, until completing the landing flare and the aircraft in level flight.

There were 196 successful landings in the program, and the two landing accidents that occurred were related to system or structural failures and not to pilot error.

The first accident happened early in the program when an engine explosion occurred during engine start, and the pilot was forced to land at the launch lake. Not all of the propellants jettisoned; also, the oil in the nose strut had become aerated. Thus, the aircraft was heavyweight, and the nose strut did not provide the designed shock absorption. In spite of this, the damage was minor, and the airplane was back in the air in three months with a modified nose strut able to handle the landing loads.

X-15 Landing Incident

Again, engine failure caused the second landing accident. Here the fuel was jettisoned, but the landing flaps failed to extend. The landing was therefore fast and the high download on the main gear after nosewheel touchdown combined with a faulty weld, caused the left main gear to fail. The aircraft veered sideways and rolled over, damaging the wings; destroying the tail surfaces, and injuring the pilot, who suffered three crushed vertebrae.

A third inflight accident resulted in the loss of Pilot Michael Adams, Sr.

MISSION CHRONOLOGY

• 15 October 1958 X-15 rollout: Program: X-15. Launch Vehicle: X-15A. First of a series of three X-15 experimental rocket-powered manned research aircraft was rolled out at the Los Angeles plant of North American Aviation, Inc., in the joint USAF-USN-NASA program.


• 08 June 1959 X-15 Flight 1: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. First flight for X-15 # 1. Planned glide flight. Maximum Speed - 840 kph. Maximum Altitude - 11445 m.


• 17 September 1959 X-15 Flight 2: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. First flight for X-15 # 2. First powered flight. Maximum Speed - 2241 kph. Maximum Altitude - 15954 m. Turbopump case failure resulted in fire in engine compartment.


• 17 October 1959 X-15 Flight 3: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2283 kph. Maximum Altitude - 18831 m. Nose gear door failed on landing.


• 05 November 1959 X-15 Flight 4: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. Engine fire; fuselage structural failure on landing. Aircraft returned to North American for rebuild. Maximum Speed - 1062 kph. Maximum Altitude - 13857 m.


• 23 January 1960 X-15 Flight 5: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2685 kph. Maximum Altitude - 20374 m.


• 11 February 1960 X-15 Flight 6: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2359 kph. Maximum Altitude - 26858 m.


• 17 February 1960 X-15 Flight 7: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 1667 kph. Maximum Altitude - 16045 m. Automatic shutdown of one chamber in upper XLR-11.


• 17 March 1960 X-15 Flight 8: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2283 kph. Maximum Altitude - 16045 m. 6G maneuver test.


• 25 March 1960 X-15 Flight 9: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2124 kph. Maximum Altitude - 14822 m. Roll damper malfunctioned.


• 29 March 1960 X-15 Flight 10: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2080 kph. Maximum Altitude - 15235 m.


• 31 March 1960 X-15 Flight 11: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2156 kph. Maximum Altitude - 15653 m. 3.5 to 5G pullouts to simulate reentry.


• 13 April 1960 X-15 Flight 12: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2018 kph. Maximum Altitude - 14630 m.


• 19 April 1960 X-15 Flight 13: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2718 kph. Maximum Altitude - 18134 m.


• 06 May 1960 X-15 Flight 14: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2336 kph. Maximum Altitude - 18574 m.


• 12 May 1960 X-15 Flight 15: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3397 kph. Maximum Altitude - 23738 m.


• 19 May 1960 X-15 Flight 16: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2558 kph. Maximum Altitude - 33222 m.


• 26 May 1960 X-15 Flight 17: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2336 kph. Maximum Altitude - 15631 m. First test of reaction control system.


• 04 August 1960 X-15 Flight 18: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3533 kph. Maximum Altitude - 23809 m. Unofficial world speed record. This topped Captain Apt's speed of 2,094 mph attained in the X-2 on September 27, 1956.


• 12 August 1960 X-15 Flight 19: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2851 kph. Maximum Altitude - 41605 m. Established a new altitude record for a manned vehicle of 136,500 feet. This topped Captain Kincheloe's record altitude of 126,200 feet attained on September 7, 1956, in the X-2 rocket research aircraft.


• 19 August 1960 X-15 Flight 20: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3195 kph. Maximum Altitude - 23159 m.


• 17 September 1960 X-15 Flight 21: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3510 kph. Maximum Altitude - 24343 m.


• 23 September 1960 X-15 Flight 22: Program: X-15. Flight Crew: Petersen Forrest. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 1783 kph. Maximum Altitude - 16168 m. Premature shutdown of both XLR-11's.


• 20 October 1960 X-15 Flight 23: Program: X-15. Flight Crew: Petersen Forrest. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2059 kph. Maximum Altitude - 16398 m.


• 28 October 1960 X-15 Flight 24: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2145 kph. Maximum Altitude - 15453 m.
• 04 November 1960 X-15 Flight 25: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2071 kph. Maximum Altitude - 14905 m.


• 15 November 1960 X-15 Flight 26: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. First flight with XLR-99 engine. Maximum Speed - 3154 kph. Maximum Altitude - 24750 m.


• 17 November 1960 X-15 Flight 27: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 2018 kph. Maximum Altitude - 16688 m. Lower XLR-11 shutdown but restarted.


• 22 November 1960 X-15 Flight 28: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. First restart with XLR-99 engine. Maximum Speed - 2665 kph. Maximum Altitude - 18867 m.


• 30 November 1960 X-15 Flight 29: Program: X-15. Flight Crew: Armstrong. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 1858 kph. Maximum Altitude - 14886 m. Only 7 of 8 XLR-11 chambers ignited.


• 06 December 1960 X-15 Flight 30: Program: X-15. Flight Crew: Crossfield. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3027 kph. Maximum Altitude - 16268 m.


• 09 December 1960 X-15 Flight 31: Program: X-15. Flight Crew: Armstrong. Launch Site: Edwards . Launch Vehicle: X-15A. First hot nose flight. Maximum Speed - 1911 kph. Maximum Altitude - 15269 m.


• 01 February 1961 X-15 Flight 32: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 1949 kph. Maximum Altitude - 15170 m.


• 07 February 1961 X-15 Flight 33: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3660 kph. Maximum Altitude - 23820 m. Last XLR-11 flight.


• 07 March 1961 X-15 Flight 34: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4674 kph. Maximum Altitude - 23610 m.


• 30 March 1961 X-15 Flight 35: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4441 kph. Maximum Altitude - 51700 m.


• 21 April 1961 X-15 Flight 36: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4946 kph. Maximum Altitude - 32000 m.


• 25 May 1961 X-15 Flight 37: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5321 kph. Maximum Altitude - 32850 m.


• 19 June 1961 X-15 awards: Program: X-15. Launch Vehicle: X-15A. Harmon International Aviator's Trophy for 1961 announced as going to three winners for the first time-X-15 rocket research airplane pilots: A. Scott Crossfield, of North American; Joseph A. Walker, of NASA, and Maj. Robert A. White, U.S. Air Force.


• 23 June 1961 X-15 Flight 38: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5797 kph. Maximum Altitude - 32830 m. Lost cabin pressure.


• 10 August 1961 X-15 Flight 39: Program: X-15. Flight Crew: Petersen Forrest. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4401 kph. Maximum Altitude - 23830 m. Lost cabin pressure.


• 12 September 1961 X-15 Flight 40: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5821 kph. Maximum Altitude - 34840 m. Smoke in cockpit due to scorching paint.


• 28 September 1961 X-15 Flight 41: Program: X-15. Flight Crew: Petersen Forrest. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5792 kph. Maximum Altitude - 31030 m. Test reentry heat limit. Smoke in cockpit due to scorching paint.


• 04 October 1961 X-15 Flight 42: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Flight made with lower ventral off. Maximum Speed - 4553 kph. Maximum Altitude - 23770 m.


• 11 October 1961 X-15 Flight 43: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Outer panel of left windshield cracked. Maximum Speed - 5868 kph. Maximum Altitude - 66150 m.


• 17 October 1961 X-15 Flight 44: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6275 kph. Maximum Altitude - 33100 m.


• 09 November 1961 X-15 Flight 45: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Design speed achieved. Outer right windshield shattered. Maximum Speed - 6586 kph. Maximum Altitude - 30950 m.


• 10 December 1961 X-15 Flight 46: Program: X-15. Flight Crew: Armstrong. Launch Site: Edwards . Launch Vehicle: X-15A. First flight for X-15 # 3. Maximum Speed - 4026 kph. Maximum Altitude - 24700 m.


• 10 January 1962 X-15 Flight 47: Program: X-15. Flight Crew: Petersen Forrest. Launch Site: Edwards . Launch Vehicle: X-15A. Emergency landing on Mud Lake after engine failed to light. Maximum Speed - 1038 kph. Maximum Altitude - 13,640 m.


• 17 January 1962 X-15 Flight 48: Program: X-15. Flight Crew: Armstrong. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6058 kph. Maximum Altitude - 40690 m.


• 05 April 1962 X-15 Flight 49: Program: X-15. Flight Crew: Armstrong. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4586 kph. Maximum Altitude - 54860 m. The X-15 was flown in a test of a new automatic control system to be used in the Dyna-Soar and Apollo spacecraft. The previous electronic control system had been automatic only while the X-15 was in the atmosphere; the new system was automatic in space as well.


• 19 April 1962 X-15 Flight 50: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6220 kph. Maximum Altitude - 46940 m.


• 20 April 1962 X-15 Flight 51: Program: X-15. Flight Crew: Armstrong. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6097 kph. Maximum Altitude - 63250 m.


• 30 April 1962 X-15 Flight 52: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Design altitude flight. Maximum Speed - 5614 kph. Maximum Altitude - 75190 m.


• 08 May 1962 X-15 Flight 53: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5670 kph. Maximum Altitude - 21460 m.


• 22 May 1962 X-15 Flight 54: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5551 kph. Maximum Altitude - 30600 m. Roller coaster flight with 3 peaks for local airflow investigation.


• 01 June 1962 X-15 Flight 55: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5913 kph. Maximum Altitude - 40420 m. Steepest reentry descent with highest angle of attack (27 degrees) to date.


• 07 June 1962 X-15 Flight 56: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5908 kph. Maximum Altitude - 31580 m.


• 12 June 1962 X-15 Flight 57: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5659 kph. Maximum Altitude - 56270 m.


• 21 June 1962 X-15 Flight 58: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5858 kph. Maximum Altitude - 75190 m.


• 27 June 1962 X-15 Flight 59: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Unofficial world speed record. Maximum Speed - 6603 kph. Maximum Altitude - 37700 m.


• 29 June 1962 X-15 Flight 60: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5278 kph. Maximum Altitude - 25360 m.


• 16 July 1962 X-15 Flight 61: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5911 kph. Maximum Altitude - 32670 m.


• 17 July 1962 X-15 Flight 62: Program: X-15. Flight Crew: White Robert. Manned flight: X-15 Flight 62. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. FAI world altitude record. Maximum Speed - 6166 kph. Maximum Altitude - 95940 m. First astronaut wings flight (USAF definition).


• 19 July 1962 X-15 Flight 63: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5590 kph. Maximum Altitude - 25680 m.


• 26 July 1962 X-15 Flight 64: Program: X-15. Flight Crew: Armstrong. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6418 kph. Maximum Altitude - 30150 m. Roller coaster descent to simulate emergency reentry.


• 02 August 1962 X-15 Flight 65: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5532 kph. Maximum Altitude - 44040 m.


• 08 August 1962 X-15 Flight 66: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4735 kph. Maximum Altitude - 27700 m.


• 14 August 1962 X-15 Flight 67: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6029 kph. Maximum Altitude - 59010 m. New reentry technique using pitch angle instrument instead of AOA.


• 20 August 1962 X-15 Flight 68: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5686 kph. Maximum Altitude - 27000 m.


• 29 August 1962 X-15 Flight 69: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5546 kph. Maximum Altitude - 29630 m.


• 28 September 1962 X-15 Flight 70: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. This and most following flights without lower ventral. Maximum Speed - 4450 kph. Maximum Altitude - 20790 m.


• 04 October 1962 X-15 Flight 71: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5620 kph. Maximum Altitude - 34200 m.


• 09 October 1962 X-15 Flight 72: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. --CRASHED-- Maximum Speed - 5979 kph. Maximum Altitude - 39700 m.


• 23 October 1962 X-15 Flight 73: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6056 kph. Maximum Altitude - 41000 m.


• 09 November 1962 X-15 Flight 74: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Engine only produced 35% power. Emergency landing at Mud Lake. Aircraft seriously damaged when gear failed. McKay injured. Maximum Speed - 1640 kph. Maximum Altitude - 16450 m.


• 14 December 1962 X-15 Flight 75: Program: X-15. Flight Crew: White Robert. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6021 kph. Maximum Altitude - 43100 m.


• 20 December 1962 X-15 Flight 76: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6103 kph. Maximum Altitude - 48900 m.


• 17 January 1963 X-15 Flight 77: Program: X-15. Flight Crew: Walker Joseph. Manned flight: X-15 Flight 77. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. First civilian flight above 80 km. Maximum Speed - 5917 kph. Maximum Altitude - 82810 m. Second astronaut wings flight (USAF definition).


• 11 April 1963 X-15 Flight 78: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4608 kph. Maximum Altitude - 22680 m. First flight in scientific and advanced research series - carried aerial mapping camera.


• 18 April 1963 X-15 Flight 79: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Nose landing gear failed. Maximum Speed - 6066 kph. Maximum Altitude - 28190 m.


• 25 April 1963 X-15 Flight 80: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5879 kph. Maximum Altitude - 32160 m.


• 02 May 1963 X-15 Flight 81: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5612 kph. Maximum Altitude - 63820 m. Carried earth background radiation instrument in support of Midas reconnsat development.


• 14 May 1963 X-15 Flight 82: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5792 kph. Maximum Altitude - 29140 m.


• 15 May 1963 X-15 Flight 83: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6204 kph. Maximum Altitude - 37860 m. Lost both nose landing gear tires and forward fuselage buckled after APU gear box pressure loss.


• 29 May 1963 X-15 Flight 84: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Inner panel of left windshield cracked. Maximum Speed - 6208 kph. Maximum Altitude - 28040 m.


• 18 June 1963 X-15 Flight 85: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5694 kph. Maximum Altitude - 68180 m.


• 25 June 1963 X-15 Flight 86: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6293 kph. Maximum Altitude - 34080 m.


• 27 June 1963 X-15 Flight 87: Program: X-15. Flight Crew: Rushworth. Manned flight: X-15 Flight 87. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. Maximum Speed - 5511 kph. Maximum Altitude - 86870 m. Third astronaut wings flight (USAF definition).


• 09 July 1963 X-15 Flight 88: Program: X-15. Flight Crew: Walker Joseph. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5842 kph. Maximum Altitude - 69010 m.


• 18 July 1963 X-15 Flight 89: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6315 kph. Maximum Altitude - 31940 m.


• 19 July 1963 X-15 Flight 90: Program: X-15. Flight Crew: Walker Joseph. Manned flight: X-15 Flight 90. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. Maximum Speed - 5969 kph. Maximum Altitude - 106010 m. Astronaut wings flight. 80 cm diameter balloon dragged on 30 m line to measure air density. First X-15 astronaut flight (FAI definition); fourth astronaut wings flight (USAF definition).


• 22 August 1963 X-15 Flight 91: Program: X-15. Flight Crew: Walker Joseph. Manned flight: X-15 Flight 91. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. Unofficial world altitude record. Maximum Speed - 6105 kph. Maximum Altitude - 107960 m. Second X-15 astronaut flight (FAI definition); fifth astronaut wings flight (USAF definition).


• 07 October 1963 X-15 Flight 92: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4560 kph. Maximum Altitude - 23710 m.


• 29 October 1963 X-15 Flight 93: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4364 kph. Maximum Altitude - 22600 m.


• 07 November 1963 X-15 Flight 94: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4706 kph. Maximum Altitude - 25080 m. First flight with sharp-edged vertical stabilizer.


• 14 November 1963 X-15 Flight 95: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5287 kph. Maximum Altitude - 27680 m.


• 27 November 1963 X-15 Flight 96: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5326 kph. Maximum Altitude - 27371 m.


• 05 December 1963 X-15 Flight 97: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6465 kph. Maximum Altitude - 30785 m. Camera test in combination with U-2 flight.


• 08 January 1964 X-15 Flight 98: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5818 kph. Maximum Altitude - 42642 m.


• 16 January 1964 X-15 Flight 99: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5216 kph. Maximum Altitude - 21641 m.


• 28 January 1964 X-15 Flight 100: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5821 kph. Maximum Altitude - 32736 m. First test of hypersonic speed brakes.


• 19 February 1964 X-15 Flight 101: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5662 kph. Maximum Altitude - 23957 m.


• 13 March 1964 X-15 Flight 102: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5458 kph. Maximum Altitude - 23165 m.


• 27 March 1964 X-15 Flight 103: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6158 kph. Maximum Altitude - 30937 m. Secret reconn camera test.


• 08 April 1964 X-15 Flight 104: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5580 kph. Maximum Altitude - 53340 m.


• 29 April 1964 X-15 Flight 105: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6285 kph. Maximum Altitude - 30968 m.


• 12 May 1964 X-15 Flight 106: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4962 kph. Maximum Altitude - 22189 m.


• 19 May 1964 X-15 Flight 107: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5262 kph. Maximum Altitude - 59680 m.


• 21 May 1964 X-15 Flight 108: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Premature engine shutdown at 41 sec. Maximum Speed - 3001 kph. Maximum Altitude - 19568 m.


• 25 June 1964 X-15 Flight 109: Program: X-15 Flight Crew: Rushmore. Launch Site: Edwards. Launch Vehicle: X-15A-2 (First Flight) Maxium Speed: 3,104 kph, Maxium Altitude: 83,300 m.


• 30 June 1964 X-15 Flight 110: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5364 kph. Maximum Altitude - 30358 m.


• 08 July 1964 X-15 Flight 111: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5664 kph. Maximum Altitude - 51938 m. First test of IR horizon scanner.


• 29 July 1964 X-15 Flight 112: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5250 kph. Maximum Altitude - 23774 m. First test of various heat-resistant panels attached to fuselage.


• 12 August 1964 X-15 Flight 113: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5688 kph. Maximum Altitude - 24750 m.


• 14 August 1964 X-15 Flight 114: Program: X-15. Flight Crew: Rushmore. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3590 kph. Maximum Altitude - 303,300 ft.


• 26 August 1964 X-15 Flight 115: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6216 kph. Maximum Altitude - 27737 m.


• 03 September 1964 X-15 Flight 116: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5817 kph. Maximum Altitude - 23957 m.


• 28 September 1964 X-15 Flight 117: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6256 kph. Maximum Altitude - 29566 m.


• 29 September 1964 X-15 Flight 118: Program: X-15. Flight Crew: Rushmore. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3542 kph. Maximum Altitude - 97,800 ft.


• 15 October 1964 X-15 Flight 119: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4904 kph. Maximum Altitude - 25878 m. First flight with X-20 INS and wing tip pods.


• 30 October 1964 X-15 Flight 120: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5009 kph. Maximum Altitude - 25786 m.


• 30 November 1964 X-15 Flight 121: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3089 kph. Maximum Altitude - 87,200 ft.


• 09 December 1964 X-15 Flight 122: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5990 kph. Maximum Altitude - 28164 m.


• 10 December 1964 X-15 Flight 123: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5913 kph. Maximum Altitude - 34503 m.


• 22 December 1964 X-15 Flight 124: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5781 kph. Maximum Altitude - 24750 m.


• 13 January 1965 X-15 Flight 125: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5973 kph. Maximum Altitude - 30297 m. Immediately after burnout aircraft gyrated around all 3 axes for 7 seconds.


• 02 February 1965 X-15 Flight 126: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6253 kph. Maximum Altitude - 29931 m.


• 17 February 1965 X-15 Flight 127: Program: X-15. Flight Crew: Rushmore. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3539 kph. Maximum Altitude - 95,100 ft.


• 26 February 1965 X-15 Flight 128: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6034 kph. Maximum Altitude - 46817 m.


• 26 March 1965 X-15 Flight 129: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5760 kph. Maximum Altitude - 31059 m.


• 23 April 1965 X-15 Flight 130: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5760 kph. Maximum Altitude - 24293 m.


• 28 April 1965 X-15 Flight 131: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3260 kph. Maximum Altitude - 92,600 ft.


• 18 May 1965 X-15 Flight 132: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3541 kph. Maximum Altitude - 102,100 ft.


• 25 May 1965 X-15 Flight 133: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5100 kph. Maximum Altitude - 54803 m.


• 28 May 1965 X-15 Flight 134: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6040 kph. Maximum Altitude - 63886 m.


• 16 June 1965 X-15 Flight 135: Program: X-15. Flight Crew: Engle. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5477 kph. Maximum Altitude - 74585 m.


• 17 June 1965 X-15 Flight 136: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5697 kph. Maximum Altitude - 33071 m.


• 22 June 1965 X-15 Flight 137: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3938 kph. Maximum Altitude - 155,900 ft.


• 29 June 1965 X-15 Flight 138: Program: X-15. Flight Crew: Engle. Manned flight: X-15 Flight 138. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. Maximum Speed - 5522 kph. Maximum Altitude - 85527 m. Astronaut wings flight (USAF definition).


• 08 July 1965 X-15 Flight 139: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3659 kph. Maximum Altitude - 212,600.


• 20 July 1965 X-15 Flight 140: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6050 kph. Maximum Altitude - 32126 m.


• 03 August 1965 X-15 Flight 141: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3602 kph. Maximum Altitude - 208,700 ft.


• 06 August 1965 X-15 Flight 142: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5686 kph. Maximum Altitude - 31455 m.


• 10 August 1965 X-15 Flight 143: Program: X-15. Flight Crew: Engle. Manned flight: X-15 Flight 143. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. Maximum Speed - 5712 kph. Maximum Altitude - 82601 m. Astronaut wings flight (USAF definition).


• 25 August 1965 X-15 Flight 144: Program: X-15. Flight Crew: Thompson. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5799 kph. Maximum Altitude - 65258 m.


• 26 August 1965 X-15 Flight 145: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5426 kph. Maximum Altitude - 73030 m.


• 02 September 1965 X-15 Flight 146: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3570 kph. Maximum Altitude - 239,800 ft.


• 09 September 1965 X-15 Flight 147: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5686 kph. Maximum Altitude - 29627 m.


• 14 September 1965 X-15 Flight 148: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5662 kph. Maximum Altitude - 72847 m.


• 22 September 1965 X-15 Flight 149: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5712 kph. Maximum Altitude - 30571 m.


• 28 September 1965 X-15 Flight 150: Program: X-15. Flight Crew: McKay. Manned flight: X-15 Flight 150. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. Maximum Speed - 6005 kph. Maximum Altitude - 90099 m. Astronaut wings flight (USAF definition).


• 30 September 1965 X-15 Flight 151: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4373 kph. Maximum Altitude - 23350 m.


• 12 October 1965 X-15 Flight 152: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5001 kph. Maximum Altitude - 28770 m.


• 14 October 1965 X-15 Flight 153: Program: X-15. Flight Crew: Engle. Manned flight: X-15 Flight 153. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. Maximum Speed - 5718 kph. Maximum Altitude - 81230 m. Astronaut wings flight (USAF definition).


• 27 October 1965 X-15 Flight 154: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5662 kph. Maximum Altitude - 72210 m.


• 03 November 1965 X-15 Flight 155: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 1500 kph. Maximum Altitude - 70,600 ft. Only launch from Cuddeback.


• 04 November 1965 X-15 Flight 156: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4450 kph. Maximum Altitude - 24440 m.


• 06 May 1966 X-15 Flight 157: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Premature engine shutdown at 32 sec. Maximum Speed - 2307 kph. Maximum Altitude - 20850 m.


• 18 May 1966 X-15 Flight 158: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3689 kph. Maximum Altitude - 99,000 ft.


• 01 July 1966 X-15 Flight 159: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 1061 kph. Maximum Altitude - 44,800 ft. Landed Mud Lake.


• 12 July 1966 X-15 Flight 160: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5876 kph. Maximum Altitude - 39620 m.


• 18 July 1966 X-15 Flight 161: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5176 kph. Maximum Altitude - 29290 m. First flight with X-20 energy management system.


• 21 July 1966 X-15 Flight 162: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3568 kph. Maximum Altitude - 192,300 ft.


• 28 July 1966 X-15 Flight 163: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5957 kph. Maximum Altitude - 73700 m.


• 03 August 1966 X-15 Flight 164: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3440 kph. Maximum Altitude - 249,000 ft.


• 04 August 1966 X-15 Flight 165: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6376 kph. Maximum Altitude - 40450 m.


• 11 August 1966 X-15 Flight 166: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5776 kph. Maximum Altitude - 76500 m.


• 12 August 1966 X-15 Flight 167: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3472 kph. Maximum Altitude - 231,100 ft.


• 19 August 1966 X-15 Flight 168: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5804 kph. Maximum Altitude - 54250 m.


• 25 August 1966 X-15 Flight 169: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5701 kph. Maximum Altitude - 78490 m. Collected micrometeorites and extraterrestrial dust.


• 30 August 1966 X-15 Flight 170: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3542 kph. Maximum Altitude - 100,200 ft.


• 08 September 1966 X-15 Flight 171: Program: X-15. Flight Crew: McKay. Launch Site: Edwards . Launch Vehicle: X-15A. Premature engine shutdown at 38 sec. Maximum Speed - 2578 kph. Maximum Altitude - 22310 m.


• 14 September 1966 X-15 Flight 172: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5770 kph. Maximum Altitude - 22980 m. JPL spectrometer measured solar flux; radiometer characterized exhaust plume in UV for reconnsat sensors; collected micrometeorites.


• 06 October 1966 X-15 Flight 173: Program: X-15. Flight Crew: Adams. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4666 kph. Maximum Altitude - 22980 m. Engine shut down at 90 seconds.


• 01 November 1966 X-15 Flight 174: Program: X-15. Flight Crew: Dana. Manned flight: X-15 Flight 174. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. Maximum Speed - 6034 kph. Maximum Altitude - 93540 m. Astronaut wings flight (USAF definition).


• 18 November 1966 X-15 Flight 175: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4250 kph. Maximum Altitude - 98,900 dr.


• 29 November 1966 X-15 Flight 176: Program: X-15. Flight Crew: Adams. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5020 kph. Maximum Altitude - 28040 m.


• 22 March 1967 X-15 Flight 177: Program: X-15. Flight Crew: Adams. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 6150 kph. Maximum Altitude - 40570 m. Inertial system failed after peak altitude; cabin pressurization lost during descent.


• 26 April 1967 X-15 Flight 178: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 1871 kph. Maximum Altitude - 16280 m.


• 28 April 1967 X-15 Flight 179: Program: X-15. Flight Crew: Adams. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5985 kph. Maximum Altitude - 50900 m.


• 08 May 1967 X-15 Flight 180: Program: X-15. Flight Crew: Rushworth. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3193 kph. Maximum Altitude - 97,600 ft


• 17 May 1967 X-15 Flight 181: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5112 kph. Maximum Altitude - 21670 m.


• 15 June 1967 X-15 Flight 182: Program: X-15. Flight Crew: Adams. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5802 kph. Maximum Altitude - 69890 m.


• 22 June 1967 X-15 Flight 183: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5810 kph. Maximum Altitude - 25050 m.


• 29 June 1967 X-15 Flight 184: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Electrical failure while climbing through 32610 m; lost engine at 69 seconds; landed at Mud Lake with no flaps; Knight injured while exiting aircraft. Maximum Speed - 4618 kph. Maximum Altitude - 52730 m.


• 20 July 1967 X-15 Flight 185: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5942 kph. Maximum Altitude - 25720 m.


• 21 August 1967 X-15 Flight 186: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 3368 kph. Maximum Altitude - 91,000 ft.


• 25 August 1967 X-15 Flight 187: Program: X-15. Flight Crew: Adams. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5012 kph. Maximum Altitude - 25720 m.


• 03 October 1967 X-15 Flight 188: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4520 kph. Maximum Altitude - 102,100 ft.


• 04 October 1967 X-15 Flight 189: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 7270 kph. Maximum Altitude - 76530 m.


• 17 October 1967 X-15 Flight 190: Program: X-15. Flight Crew: Knight. Manned flight: X-15 Flight 190. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. Maximum Speed - 6204 kph. Maximum Altitude - 85500 m. Astronaut wings flight (USAF definition).


• 15 November 1967 X-15 Flight 191: Program: X-15. Flight Crew: Adams. Manned flight: X-15 Flight 191. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.00 days. Fatal accident, aircraft destroyed. After reaching peak altitude, entered spin at Mach 5. Entered dive at 30,000 m, began high frequency pitch oscillations, disintegrated when these reached 15 Gs.Maximum Speed - 5744 kph. Maximum Altitude - 81080 m.


• 01 March 1968 X-15 Flight 192: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 4631 kph. Maximum Altitude - 31850 m. Tested Saturn V insulation.


• 04 April 1968 X-15 Flight 193: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5808 kph. Maximum Altitude - 57150 m.


• 26 April 1968 X-15 Flight 194: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5704 kph. Maximum Altitude - 63090 m.


• 11 May 1968 X-15 Flight 195: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5733 kph. Maximum Altitude - 67090 m.


• 16 July 1968 X-15 Flight 196: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5442 kph. Maximum Altitude - 67510 m.


• 21 August 1968 X-15 Flight 197: Program: X-15. Flight Crew: Dana. Manned flight: X-15 Flight 197. Launch Site: Edwards . Launch Vehicle: X-15A. Duration: 0.01 days. Maximum Speed - 5540 kph. Maximum Altitude - 81530 m. Astronaut wings flight (USAF definition).


• 13 September 1968 X-15 Flight 198: Program: X-15. Flight Crew: Knight. Launch Site: Edwards . Launch Vehicle: X-15A. Maximum Speed - 5990 kph. Maximum Altitude - 77450 m.


• 24 October 1968 X-15 Flight 199: Program: X-15. Flight Crew: Dana. Launch Site: Edwards . Launch Vehicle: X-15A. Last flight. Maximum Speed - 5979 kph. Maximum Altitude - 77720 m.

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