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| Date: | Sunday 15 December 1985 |
| Time: | 15:50 LT |
| Type: |  Boeing 747-136 |
| Owner/operator: | British Airways |
| Registration: | GAWNE |
| MSN: | 19765/109 |
| Year of manufacture: | 1971 |
| Total airframe hrs: | 55667 hours |
| Engine model: | P&W JT9D-7A |
| Fatalities: | Fatalities: 0 / Occupants: 269 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Boston, MA -
 United States of America
|
| Phase: | Approach |
| Nature: | Passenger - Scheduled |
| Departure airport: | London-Heathrow Airport (LHR/EGLL) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
APRX 16 FT OF THE LEFT INBOARD TRAILING EDGE FLAP SEPARATED WHILE THE ACFT WAS ON FINAL APCH TO LAND. THE APCH AND LANDING WERE COMPLETED WITHOUT FURTHER INCIDENT. INVESTIGATION REVEALED 5 OF THE 8 BOLTS WHICH HOLD THE NO. 3 FLAP TRACKFORWARD ATTACH FITTING TO THE WING SHOWED SIGNS OF FATIGUE AND THE 3 REMAINING BOLTS SHOWED OVERLOAD TYPE FAILURES. NO INSPECTION REQUIREMENTS FOR THE FORWARD ATTACHMENT BOLTS WERE REQUIRED BY BOEING AT THE TIME OF THE ACCIDENT.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB DCA86AA011
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 29-Mar-2024 09:55 | ASN Update Bot | Added |
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