List of X-1A flights

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X-1A pilots[edit]

Pilot Agency Flights Aircraft
Jean Ziegler Bell Aircraft 6 48-1384
Joseph Walker NACA 2 48-1384
Arthur Murray USAF 14 48-1384
Chuck Yeager USAF 4 48-1384

X-1A flights[edit]

Vehicle
Flight #
Date Pilot Aircraft Agency Velocity
-Mach-
Altitude
- m -
Comments
X-1A #1 February 14, 1953 Jean Ziegler 48-1384 Bell 1  ?  ? Pilot familiarization. Fuel jettison test. Glide flight.
X-1A #2 February 14, 1953 Jean Ziegler 48-1384 Bell 2  ?  ? Planned powered flight. Propellant system problems. Glide flight.
X-1A #3 February 21, 1953 Jean Ziegler 48-1384 Bell 3  ?  ? First X1-A powered flight. False fire alarm.
X-1A #4 March 26, 1953 Jean Ziegler 48-1384 Bell 4  ?  ? Aircraft fired all four cylinders.
X-1A #5 April 10, 1953 Jean Ziegler 48-1384 Bell 5 0.93  ? Pilot found low-frequency elevator buzz at mach 0.93.
X-1A #6 April 25, 1953 Jean Ziegler 48-1384 Bell 6 0.93  ? Pilot again found low-frequency elevator buzz at mach 0.93. Turbopump overspeeding caused powered flight abort.
X-1A #7 November 21, 1953 Chuck Yeager 48-1384 USAF 1 1.15  ? Familiarization flight.
X-1A #8 December 2, 1953 Chuck Yeager 48-1384 USAF 2 1.5  ? -
X-1A #9 December 8, 1953 Chuck Yeager 48-1384 USAF 3 1.9 18,300 First high-mach flight. Achieved mach 1.9 during slight climb.
X-1A #10 December 12, 1953 Chuck Yeager 48-1384 USAF 4 2.44 15,250 Encountered severe instability above mach 2.3. Inverted spin from apogee down to 7,624 m. Pilot recovered control.
X-1A #11 March 21, 1954 Arthur Murray 48-1384 USAF 5  ?  ? Estimated flight date.
X-1A #12 April 4, 1954 Arthur Murray 48-1384 USAF 6  ?  ? Estimated flight date.
X-1A #13 April 11, 1954 Arthur Murray 48-1384 USAF 7  ?  ? Estimated flight date.
X-1A #14 April 25, 1954 Arthur Murray 48-1384 USAF 8  ?  ? Estimated flight date.
X-1A #15 May 14, 1954 Arthur Murray 48-1384 USAF 9  ?  ? Estimated flight date.
X-1A #16 May 28, 1954 Arthur Murray 48-1384 USAF 10  ? 26,564 Attained un-official world altitude record for that time.
X-1A #17 June 4, 1954 Arthur Murray 48-1384 USAF 11 1.97 27,374 Attained un-official world altitude record. Encountered severe instability at mach 1.97. Tumbled out of control from apogee down to 20,130 m.
X-1A #18 June 18, 1954 Arthur Murray 48-1384 USAF 12  ?  ? Estimated flight date.
X-1A #19 July 2, 1954 Arthur Murray 48-1384 USAF 13  ?  ? Estimated flight date.
X-1A #20 July 16, 1954 Arthur Murray 48-1384 USAF 14  ?  ? Estimated flight date.
X-1A #21 July 30, 1954 Arthur Murray 48-1384 USAF 15  ?  ? Estimated flight date.
X-1A #22 August 8, 1954 Arthur Murray 48-1384 USAF 16  ?  ? Estimated flight date.
X-1A #23 August 19, 1954 Arthur Murray 48-1384 USAF 17  ?  ? Estimated flight date.
X-1A #24 August 26, 1954 Arthur Murray 48-1384 USAF 18  ? 27,584 Last USAF flight. Turned over to NACA.
X-1A #25 July 20, 1955 Joseph Walker 48-1384 NACA 1 1.45 13,725 First NACA flight. Severe aileron buzz at mach 0.90 to 0.92.
X-1A #26 August 8, 1955 Joseph Walker 48-1384 NACA 2  ?  ? Planned second NACA flight. X1-A suffered small in flight explosion. Pilot exited into B-29. X1-A jettisoned and destroyed.

See also[edit]