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| Date: | Sunday 11 April 1999 |
| Time: | 23:15 LT |
| Type: |  Airbus A310-304 |
| Owner/operator: | TAP Air Portugal |
| Registration: | CS-TEW |
| MSN: | 541 |
| Year of manufacture: | 1990 |
| Engine model: | GE CF6-80C2A2 |
| Fatalities: | Fatalities: 0 / Occupants: 144 |
| Other fatalities: | 0 |
| Aircraft damage: | None |
| Category: | Accident |
| Location: | Sal (GVAC) -
 Cape Verde
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | Lisbon (LPPT) |
| Sal (GVAC) | |
| Investigating agency: | GPIAA |
| Confidence Rating: |  Accident investigation report completed and information captured |
TAP flight TP1107, an Airbus A310-300 aircraft, took off from Lisbon at 20:58 UTC. It was in the descent phase approaching Sal Airport when, at around 00:15, while passing FL160, the Autopilot (AP) commanded a movement that caused an increase in the nose-down attitude of the aircraft, with a consequent increase in speed, which reached and exceeded the Maximum Operational Speed (MOS).
Unable to get the autopilot to control the speed so as not to overshoot the MOS, the crew tried to control the aircraft using manual piloting. This led to a sharp variation in the aircraft's attitude, with peaks of vertical accelerations between +2.42g and -0.09g in a short space of time, which caused injuries to some crew members and passengers. Once the aircraft had stabilised, the autopilot was re-engaged and the flight continued normally until it landed in Sal at 00:28 (23:18 local time).
One crew member suffered serious injuries.
Accident investigation:
 |
|
Sources:
GPIAA
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Sep-2024 18:37 | ASN | Added |
| 14-Sep-2024 18:43 | ASN | Updated [Time, Total occupants, Departure airport, Destination airport, Source, Narrative, Accident report, ] |
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