Service difficulty report · Chip Detector · Bell 407

Difficulty date
May 2, 2014
Submitted
May 5, 2014
Operation
Air carrier
Aircraft
N512MT
Make and model
Bell 407
Aircraft serial
53571
Aircraft time
4,818 hours, 21,062 cycles
Part
Chip Detector
Condition
Contaminated
Location
Transmission
Part time
8,679 hours
Stage of operation
AA
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

MEDICAL CREW WAS ENROUTE WITH A PATIENT ONBOARD. AT 1.1 HOURS IN FLIGHT, THE PILOT ENCOUNTERED A TRANSMISSION CHIP LIGHT. AT THIS TIME A PRECAUTIONARY LANDING WAS MADE. FOUND SOME SMALL FUZZ PIECES ON THE LOWER CHIP DETECTOR. FOLLOWING THE STEPS OUT OF THE MM CHAPTER 63 & 12, THE TRANSMISSION WAS DRAINED THROUGH A PAPER FILTER FUNNEL IN WHICH ONLY A COUPLE OF VERY SMALL PIECES OF DEBRIS WAS FOUND. FLUSHED THE SYS WITH FRESH OIL, RE-SERVICED THE TRANSMISSION WITH NEW OIL & FILTER. PERFORMED A 20 MIN PENALTY RUN & DID NOT ENCOUNTER ANY ADDITIONAL ISSUES. ACFT WAS THEN RELEASED TO SERVICE.

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