Service difficulty report · Transmission · Bell 407

Difficulty date
November 13, 2020
Submitted
November 16, 2020
Operation
Air carrier
Aircraft
N407VV
Make and model
Bell 407
Aircraft serial
53476
Aircraft time
10,584 hours, 26,431 cycles
Engine
Allsn 250C47B
Engine time
9,816 hours
Part
Transmission
Part number
407040006115
Part serial
A673
Condition
Used
Location
Main Rotor
Stage of operation
AA
How discovered
V
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

WHILE ENROUTE TO THE HOSPITAL FROM A SCENE CALL, THE XMSN CHIP LIGHT ILLUMINATED. IMMEDIATE PRECAUTIONARY LANDING WAS CONDUCTED WITHOUT INCIDENT. MAINTINENCE FOUND SMALL METALLIC PARTICLES ON THE LOWER CHIP DETECTOR. GEARBOX OIL AND FILTER WERE DRAINED AND REPLACED, AFTER A GROUND RUN WAS PERFORMED THE CHIP DETECTORS WERE INSPECTED AND FOUND TO BE CLEAN. AIRCRAFT WAS PLACED BACK IN SERVICE.

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