Service difficulty report · Transmission · Bell 407

Difficulty date
April 1, 2012
Submitted
April 6, 2012
Operation
Air carrier
Aircraft
N911KX
Make and model
Bell 407
Aircraft serial
53719
Aircraft time
2,339 hours
Engine
Allsn 250C47B
Engine time
2,296 hours, 5,783 cycles
Part
Transmission
Part number
407040006115FM
Part serial
A599
Condition
Making Metal
Location
Zone 200
Part time
6,194 hours
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

REMOVED CHIP DETECTORS. LOWER TRANSMISSION MAGNETIC CHIP DETECTOR HAD SOME FUZZ AND A SINGLE SPIKE LIKE PARTICLE JUST LONG ENOUGH TO BRIDGE THE DETECTOR. CLEANED DETECTOR, GROUND RAN AND REINSPECTED DETECTOR. RETURNED ACFT TO SERVICE CLASSIFYING CHIP AS INSIGNIFICANT DEBRIS IAW BHT 407 MM FIGURE 63-13.

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