Service difficulty report · Engine · Bell 407

Difficulty date
December 11, 2014
Submitted
March 12, 2015
Operation
General aviation
Make and model
Bell 407
Engine
Allsn 250C47B
Part
Engine
Condition
Making Metal
Part time
832 hours
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

(CAN) FOUND A SIGNIFICANT AMOUNT OF CHIPS IN THE CEFA. PULLED THE FILTER AND A FEW CHIPS ON THE BOTTOM CHIP DETECTOR. AFTER SENDING THE FILTER TO MANUFACTURE, DECIDED IT`S CONSISTENT WITH BEARING MATERIAL. WILL BE REMOVING THE ENGINE TODAY THIS IS THE SAME ENGINE THAT HAD THE NR 2 BEARING FAILURE WHICH WAS THEN REPAIRED. SHIP AND ENGINE TIME IS 831.9 HRS AND 497 CYCLES. 540HRS SINCE THE NR 2 BEARING EVENT.

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