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Accident
Last updated: 20 October 2017
Status:Schlussbericht
Datum:Sonntag 15 Dezember 1985
Zeit:14:50
Flugzeugtyp:Silhouette image of generic B741 model; specific model in this crash may look slightly different
Boeing 747-136
Fluggesellschaft:British Airways
Kennzeichen: G-AWNE
Werknummer: 19765/109
Baujahr: 1971
Betriebsstunden:55667
Besatzung:Todesopfer: 0 / Insassen: 17
Fluggäste:Todesopfer: 0 / Insassen: 252
Gesamt:Todesopfer: 0 / Insassen: 269
Sachschaden: schwer beschädigt
Konsequenzen: Repaired
Unfallort:Boston-Logan International Airport, MA (BOS) (   USA)
Flugphase: Annäherung (APR)
Betriebsart:Internationaler Linienflug
Flug von:London-Heathrow Airport (LHR/EGLL), Großbritannien
Flug nach:Boston-Logan International Airport, MA (BOS/KBOS), USA
Unfallbericht:
Approximately 16 ft of the left inboard trailing edge flap separated while the aircraft was on final approach to land at Boston-Logan Airport. The approach and landing were completed without further incident. Investigation revealed 5 of the 8 bolts which hold the no. 3 flap track forward 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:

PROBABLE CAUSE:
flight control,flap attachment..fatigue

CONTRIBUTING FACTORS:
flight control,flap attachment..failure,partial
acft/equip,inadequate airframe..manufacturer
insufficient standards/requirements,manufacturer..manufacturer
maintenance..inadequate..manufacturer
maintenance,inspection..inadequate..manufacturer

Informationsquelle:
» NTSB


Sicherheitsempfehlungen

NTSB issued 3 Safety Recommendations

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Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from London-Heathrow Airport to Boston-Logan International Airport, MA as the crow flies is 5201 km (3251 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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