Service difficulty report · Bearing · Bell 407

Difficulty date
March 17, 2010
Submitted
March 17, 2010
Operation
Air carrier
Aircraft
N406AL
Make and model
Bell 407
Aircraft serial
53481
Aircraft time
7,282 hours
Engine
Allsn 250C47B
Part
Bearing
Part number
407340339107
Part serial
ZV13231
Condition
Overheated
Location
T/R Drive Shaft
Part time
366 hours
Component
Tail Rotor Driv · Bell
Component part number
407040302115
Stage of operation
IN
How discovered
V
Nature of condition
M
Precautionary procedure
K

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

What was found

BEARING PN 407-340-339-107, SN ZV13231, TT 366.4 EXHIBITED SIGNS OF OVERTEMP CONDITION. EXPELLED GREASE WAS BLACK AND THE OVERHEAT TEMP INDICATOR ON THE BEARING HANGER WAS BLACK.

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