| T-3:15:00 |
NASA Launch Team – Management on Station |
| T-2:20:00 |
Flight Crew enters L-1011 Aircraft |
| T-2:20:00 |
Prestart Checklist (L-1011) |
| T-2:18:00 |
Engine Start Poll |
| T-2:10:00 |
GO for Engine Start |
| T-2:10:00 |
Start Engine 2 |
| T-2:10:00 |
Start Engines 1&3 |
| T-2:10:00 |
Aircraft Hatch Closure |
| T-2:10:00 |
Aircraft Stairs Removal |
| T-1:45:00 |
Pre-Taxi Checklist complete |
| T-1:45:00 |
Flight Termination System Activation |
| T-1:45:00 |
Voice Checks completed |
| T-1:15:00 |
GO for Taxi |
| T-1:15:00 |
Taxi |
| T-1:03:00 |
Status Check |
| T-1:00:00 |
Ready for Takeoff Poll |
| T-1:00:00 |
GO for Takeoff |
| T-1:00:00 |
L-1011 Takeoff |
| T-1:00:00 |
Chase Plane Takeoff |
| T-0:30:00 |
Chase Plane Visual Inspection |
| T-0:30:00 |
Report on Turbulence, Winds, Clouds |
| T-0:15:00 |
Release Mechanism armed |
| T-0:12:00 |
Flight Termination System Verification |
| T-0:12:00 |
Avionics to internal Power |
| T-0:09:00 |
Weather Status Report |
| T-0:09:00 |
Weather GREEN for Launch |
| T-0:09:00 |
Peak Power has Passed |
| T-0:09:00 |
L-1011 on Course to Drop Point |
| T-0:07:00 |
Range Status Validation |
| T-0:07:00 |
Transient Power on |
| T-0:07:00 |
Verify Vehicle is safe |
| T-0:05:00 |
NASA Launch Manager – Final Status Check |
| T-0:05:00 |
Avionics on internal Power |
| T-0:00:45 |
Fin Battery Activation |
| T-0:00:20 |
Fin Status Check |
| T-0:00:20 |
Fin Heading Status Verification |
| T-0:00:10 |
Pilot confirms GO for Launch |
| T-0 |
Pegasus release |
| T+0:00:05.00 |
Pegasus Orion 50S IGNITION |
