ASN Wikibase Occurrence # 359387
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| Date: | Friday 27 January 1995 |
| Time: | 18:23 LT |
| Type: |  British Aerospace BAe-146-300 |
| Owner/operator: | Air Wisconsin |
| Registration: | N611AW |
| MSN: | E3120 |
| Engine model: | Allied Signal ALF-502R-5 |
| Fatalities: | Fatalities: 0 / Occupants: 89 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | Madison, WI -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Chicago, IL (KORD) |
| (KMSN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While in cruise flight at 12,000 feet mean sea level, the no. 2 engine had a fire indication. The crew shut the engine down in flight and landed uneventfully. Investigation found a cracked left fuel manifold segment in the no. 2 engine. Metallurgical analysis established that the crack was characterized by fatigue striations, and that the crack occurred in a position on the manifold where there was an abrupt change in material thickness. There had been two previous occurrences of cracked manifolds reported by the operator and investigated by the NTSB. Prior to this incident, the manufacturer had taken three actions to resolve fuel manifold cracking; they were: 1.) introduce a redesign of manifold segments, 2.) agree to replace all operator manifold assemblies with the improved design, and 3.) introduce an eddy current inspection procedure for detecting manifold cracks. Following this incident, the FAA mandated more frequent inspection intervals and adoption of the new eddy-current inspection process for the unimproved manifolds.
Probable Cause: A fuel leak in the no. 2 engine left fuel manifold segment due to a design defect which led to a fatigue crack.
Accident investigation:
 |
|
Sources:
NTSB CHI95IA079
History of this aircraft
Other occurrences involving this aircraft
| 20 July 1993 | N611AW | Air Wisconsin | 0 | Chicago, IL | |
min |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 09:59 | ASN Update Bot | Added |
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