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Last updated: 4 December 2021
Status:Definitief
Datum:vrijdag 27 februari 1987
Tijd:20:00
Type:Silhouette image of generic B462 model; specific model in this crash may look slightly different
British Aerospace BAe-146-200A
Luchtvaartmaatschappij:Pacific Southwest Airlines - PSA
Registratie: N356PS
Constructienummer: E2039
Bouwjaar:
Aantal vlieguren:4662
Bemanning:slachtoffers: 0 / inzittenden: 4
Passagiers:slachtoffers: 0 / inzittenden: 83
Totaal:slachtoffers: 0 / inzittenden: 87
Schade: Groot
Gevolgen: Repaired
Plaats:Fresno Air Terminal, CA (FAT) (   Verenigde Staten)
Fase: Kruisvlucht (ENR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Los Angeles International Airport, CA (LAX/KLAX), Verenigde Staten
Vliegveld van aankomst:Reno/Tahoe International Airport, NV (RNO/KRNO), Verenigde Staten
Beschrijving:
The flight was uneventful during takeoff and climb to an assigned cruise altitude of FL260. Approximately 40 minutes after takeoff the number 3 engine experienced an uncontained failure of the turbine blades on the number 4 power turbine wheel. Although debris from the engine penetrated the pressure vessel, the pilot made an unscheduled landing at Fresno Airport, California without further incident. Examination of the engine revealed that ferrous chips were contaminating, and oil was bypassing the engine oil filter for at least 40 days. However, no corrective action was taken by company maintenance personnel. The oil and filter were changed three times in the three months previous to the accident. The examination revealed that the contaminated oil contributed to the failure of the number four turbine bearing subsequently leading to overheating and damage to the overspeed sensors. The turbine oversped and the turbine blades departed the turbine disc.

Probable Cause:

Probable cause:
Failure of company maintenance personnel to adequately examine the engine lubrication system when contamination was detected.

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years and 9 months
Accident number: LAX87FA128
Download report: Summary report

Bronnen:
» NTSB


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Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Los Angeles International Airport, CA en Reno/Tahoe International Airport, NV bedraagt 625 km (391 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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