Pegasus XL | High Energy Transient Explorer (HETE) & Satelite de Aplicaciones Cientificas-B (SAC-B)
Operated by Orbital Sciences Corporation, the orbital mission Pegasus XL | High Energy Transient Explorer (HETE) & Satelite de Aplicaciones Cientificas-B (SAC-B) delivered its payload into the designated orbit.
- Launch time
- Status
- FAILED
- Operator
- Orbital Sciences Corporation
- Mission type
- Orbital
- Rocket
- Pegasus XL
- Launch site
- Air launch to orbit
- Launch pad
- Wallops Flight Facility
- Payload
- —
- Target orbit
- Unknown

Mission timeline
- 1996-11-04T17:08:56.000ZPegasus XL roars off the pad at Air launch to orbit.
- The vehicle reaches Max Q, the highest aerodynamic load of the flight.
- Flight anomaly — the mission is unsuccessful.