Service difficulty report · Impeller · Bell 206L

Difficulty date
April 26, 2015
Submitted
April 22, 2016
Operation
General aviation
Make and model
Bell 206L
Aircraft time
21,694 hours
Engine
Allsn 250C20B
Part
Impeller
Part number
206061432109
Condition
Failed
Location
Oil Cooler
Stage of operation
AP
How discovered
O
Nature of condition
E
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) 2 MILES FROM FINAL PILOT HEARD A LOUD BANG. ALL GAUGES MONITORED AND SITUATION ASSESSED. ENGINE OIL TEMPERATURE SLOWLY STARTED RISING. ACFT LANDED SAFELY. DURING ENGINE SHUTDOWN PROCEDURE ENGINE OIL TEMPERATURE ROSE TO APPROXIMATELY 140C. AME WAS SENT ON SITE AND OIL COOLER BLOWER IMPELLER WAS FOUND TO HAVE CATASTROPHICALLY FAILED. ACFT REMOVED FROM SERVICE AND ENGINE REMOVED FOR OVER-TEMP INSPECTION.

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