ASN Wikibase Occurrence # 361243
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Date: | Saturday 25 September 1993 |
Time: | 09:35 LT |
Type: | Boeing 747-251F (SCD) |
Owner/operator: | Northwest Airlines |
Registration: | N629US |
MSN: | 22388/444 |
Engine model: | P&W JT9-D7F |
Fatalities: | Fatalities: 0 / Occupants: 3 |
Aircraft damage: | Minor |
Category: | Serious incident |
Location: | Anchorage, AK -
United States of America
|
Phase: | Take off |
Nature: | Unknown |
Departure airport: | |
Destination airport: | (KNRT) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:A 28 OUNCE DUCK WAS INGESTED INTO A JT9 TURBOFAN ENGINE OF A B747 ON TAKEOFF, IMPACTING AND BREAKING THE 10 PLY FIBERGLASS FAN SPINNER. DOWNSTREAM ENGINE DESTRUCTION FOLLOWED. ENGINE MANUFACTURE AND FAA WAS AWARE OF A NUMBER OF PREVIOUS BIRD-STRIKE FAILURES WITH THIS SPINNER. NEW AND STRONGER 20 PLY SPINNERS ARE BEING PHASED IN; HOWEVER, THIN SPINNERS ARE STILL IN USE ON JT9 ENGINES IN COMMERCIAL SERVICE.
Probable Cause: FOREIGN OBJECT DAMAGE TO THE COMPRESSOR FORWARD FAN ASSEMBLY AS A RESULT OF THE INGESTION OF A BIRD.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | ANC93IA188 |
Status: | Investigation completed |
Duration: | 1 year and 2 months |
Download report: | Final report |
|
Sources:
NTSB ANC93IA188
History of this aircraft
Other occurrences involving this aircraft Location
Revision history:
Date/time | Contributor | Updates |
16-Mar-2024 16:17 |
ASN Update Bot |
Added |
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