National Aeronautics and Space AdministrationAtlas LV-3BSpace Launch Complex 14, Cape Canaveral SFS, FL, USA
Mercury-Atlas 3
Launched
April 25, 1961
Summary
Mercury-Atlas 3 launched on a National Aeronautics and Space Administration Atlas LV-3B from Space Launch Complex 14, Cape Canaveral SFS, FL, USA on April 25, 1961. The mission failed: Pitch and roll sequence failed to initiate. It was National Aeronautics and Space Administration's 26th launch and 7th this year. It was the 4th Atlas LV-3B flight and the 2nd this year. The payload was bound for Suborbital (Sub). The spacecraft was Mercury No.8 (8).
- Result
- Pitch and roll sequence failed to initiate.
- Watch
- No webcast on record.
- Booster
- No booster details on record.
- Mission
- Test Flight · Suborbital (Sub)
- Milestone
- 4th Atlas LV-3B flight · 2nd this yearNational Aeronautics and Space Administration's 26th launch7th this year
Spacecraft
Mercury No.8 (8)
Mercury No.8 is the Mercury capsule used for the Mercury-Atlas 3 and 4 missions.
- Destination: Suborbital
- Mission length: under an hour
The Mercury spacecraft safely splashed down in the Atlantic Ocean after the launch escape system was triggered due to a launch vehicle failure.
Flight preview
About this launch
Uncrewed test flight of the Mercury program. The launch proceeded normally until about T+20 seconds when the pitch and roll sequence failed to initiate and the vehicle instead just continued flying straight upward, requiring early termination of the flight.
Pad

Space Launch Complex 14, Cape Canaveral SFS, FL, USA
7th launch from Space Launch Complex 14, 2nd this year · 57th from Cape Canaveral SFS, FL, USA
20 launches from this pad · 1,131 from Cape Canaveral SFS, FL, USA
63 days after the previous launch from this pad
Questions
When did Mercury-Atlas 3 launch?
Mercury-Atlas 3 launched on April 25, 1961. The time is known to the hour, not the minute.
Why did Mercury-Atlas 3 fail?
Pitch and roll sequence failed to initiate.
Where can I watch Mercury-Atlas 3?
No webcast is on record for this launch.
What rocket launched Mercury-Atlas 3?
Atlas LV-3B, flown by National Aeronautics and Space Administration. Atlas LV-3B spec sheet
Where did Mercury-Atlas 3 launch from?
Space Launch Complex 14, Cape Canaveral SFS, FL, USA.
What orbit was Mercury-Atlas 3 going to?
Suborbital (Sub), a test flight mission.
Which program is Mercury-Atlas 3 part of?
Mercury. About Mercury
![[AUTO] Atlas LV-3B - image](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Fatlas_image_20190222030015.jpeg&w=1600)