Service difficulty report · Transmission · Bell 407

Difficulty date
October 17, 2014
Submitted
October 20, 2014
Operation
Air carrier
Aircraft
N505MT
Make and model
Bell 407
Aircraft serial
53307
Aircraft time
6,097 hours, 19,294 cycles
Part
Transmission
Part number
407040006107FM1
Part serial
A540
Condition
Contaminated
Location
Main Rotor
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

AIRCRAFT WAS CONDUCTING A PATIENT TRANSFER WHEN THE PILOT ENCOUNTERED A TRANSMISSION CHIP LIGHT. PILOT IMMEDIATELY PERFORMED A PRECAUTIONARY LANDING SAFELY. MAINTENANCE WAS NOTIFIED & EN ROUTE WITH SUPPLIES & EQUIPMENT. MECHANIC FOUND MINOR MICROSCOPIC PARTICLES & PERFORMED A SERVICEABILITY CHECK IAW GUIDELINES OUTLINED IN CHAPTER 63 OF THE MM. PERFORMED PENALTY RUN & REINSPECTED DETECTORS WITH NO DEBRIS FOUND. ACFT RETURNED TO SERVICE.

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