Service difficulty report · Engine · Bell 407

Difficulty date
August 31, 2017
Submitted
September 5, 2017
Operation
Air carrier
Aircraft
N383AM
Make and model
Bell 407
Aircraft serial
54634
Aircraft time
328 hours, 839 cycles
Engine
Allsn 250C47B
Engine time
328 hours, 839 cycles
Part
Engine
Part number
M25010672
Part serial
CAE848803
Condition
Making Metal
Part time
328 hours, 839 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

ENGINE CHIP LIGHT. FOUND METAL SHAVINGS ON CHIP DETECTOR. CHIP WAS FOUND DURING PILOT PREFLIGHT/ AIRWORTHINESS CHECK. MECHANIC WAS CALLED INTO INSPECT. REP LEAD MECHANIC RMM WERE CALLED. WAS DETERMINED TO TAKE AIRCRAFT OOS UNTIL FURTHER INVESTIGATION. THIS AIRCRAFT REMAINS OUT OF SERVICE AT THIS TIME TO REPLACE THIS ENGINE, AND SEND OUT THE ENGINE REFERENCED IN THIS EVENT FOR A THOROUGH INVESTIGATION INTO THE SOURCE OF THE CHIPS.

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