Air-launched rocket drop zone known to have been used for 10 launches from 1963 to 1968, reaching up to 107 kilometers altitude.

• RW03/21 - Latitude: 39.3135 deg. Longitude: -117.4937 deg.

1963 July 19 - 18:20 GMT - Launch Vehicle: X-15. X-15 3-21-32 X-15A VO,UVP,IR,HS,Balloon Test/Technology/Ultraviolet Astronomy mission Agency: NASA/USAF. Apogee: 106 km (65 mi). 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).

1963 August 22 - 18:05 GMT - Launch Vehicle: X-15. X-15 3-22-36 X-15A VO,Spectrom,Photom Test/Aeronomy mission Agency: NASA/USAF. Apogee: 107 km (66 mi). 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).

1966 September 8 - 18:39 GMT - Launch Vehicle: X-15. X-15 1-68-113 FAILURE: Emergency landing at Smith Ranch. X-15A HS/Elec loads test Agency: NASA/USAF. Apogee: 22 km (13 mi). Premature engine shutdown at 38 sec. Maximum Speed - 2578 kph. Maximum Altitude - 22310 m.

1966 November 1 - 21:24 GMT - Launch Vehicle: X-15. X-15 3-56-83 X-15A MuMet/DCR/SB Meteorological/Aeronomy mission Agency: NASA/USAF. Apogee: 93 km (57 mi). Maximum Speed - 6034 kph. Maximum Altitude - 93540 m. Astronaut wings flight (USAF definition).

1967 June 29 - 18:27 GMT - Launch Vehicle: X-15. X-15 1-73-126 FAILURE: Loss of both APU's and all electrical power. X-15A WTR/HS/ASAS Test/Technology mission Agency: NASA/USAF. Apogee: 52 km (32 mi). 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.

1967 October 4 - 17:16 GMT - Launch Vehicle: X-15. X-15 3-63-94 X-15A UV Plume/Solar/MM Technology/Meteor/Solar mission Agency: NASA/USAF. Apogee: 76 km (47 mi). Maximum Speed - 7270 kph. Maximum Altitude - 76530 m.

1967 October 17 - 16:40 GMT - Launch Vehicle: X-15. X-15 3-64-95 X-15A UVPL/Solar/MM Technology/Meteor/Solar mission Agency: NASA/USAF. Apogee: 85 km (52 mi). Maximum Speed - 6204 kph. Maximum Altitude - 85500 m. Astronaut wings flight (USAF definition).

1968 June 12 - 15:31 GMT - Launch Vehicle: X-15. X-15 1-77-136 X-15A WTR/SA TPS/HS/FAB Test/Technology mission Agency: NASA/USAF. Apogee: 67 km (41 mi). Maximum Speed - 5733 kph. Maximum Altitude - 67090 m.

1968 September 13 - 18:19 GMT - Launch Vehicle: X-15. X-15 1-80-140 X-15A WTR/HS/SB/FAB/FP Test/Technology/Aeronomy mission Agency: NASA/USAF. Apogee: 77 km (47 mi). Maximum Speed - 5990 kph. Maximum Altitude - 77450 m.