Service difficulty report · Engine · Bell 407

Difficulty date
February 16, 2013
Submitted
February 19, 2013
Operation
Air carrier
Aircraft
N407NA
Make and model
Bell 407
Aircraft serial
53592
Aircraft time
3,860 hours, 8,821 cycles
Engine
Allsn 250C47B
Engine time
305 hours, 689 cycles
Part
Engine
Part number
M250C47B
Part serial
CAE848474
Condition
Making Metal
Part time
305 hours, 689 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
E

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

What was found

PILOT REPORTED ENGINE CHIP LIGHT ILLUMIINATED JUST AFTER LANDING AND RETURNING TROTTLE TO IDLE. MX WAS CALLED AND A LARGE AMOUNT OF FLAKES WERE FOUND ON BOTH THE UPPER AND LOWER ENGINE CHIP DETECTORS. SOME FLAKES EXCEEDED THE MAXIMUM ALLOWABLE IAW MM 72, PARA 2B. ENGINE WAS REMOVED FROM SERVICE AND WILL BE SENT TO REPAIR FACILITY.

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