X-15 | Flight 138
The Test Flight flight X-15 | Flight 138 departed Air launch to Suborbital flight atop a North American X-15, bound for Sub.
- Launch time
- Status
- SUCCESS
- Operator
- United States Air Force
- Mission type
- Test Flight
- Rocket
- North American X-15
- Launch site
- Air launch to Suborbital flight
- Launch pad
- Edwards Air Force Base
- Payload
- —
- Target orbit
- Sub

Mission timeline
- 1965-06-29T18:21:00.000ZLiftoff confirmed — North American X-15 is airborne.
- Max Q — North American X-15 endures peak structural stress during ascent.
- The mission reaches Sub, successfully entering orbit.
- The mission concludes successfully.