Service difficulty report · Bolt · Bell 407

Difficulty date
May 3, 1998
Submitted
March 26, 2000
Operation
General aviation
Make and model
Bell 407
Part
Bolt
Part number
D01521
Condition
Worn
Location
M/R Brake
Part time
138 hours
Component
Precision · 206340301103
Stage of operation
IN
Nature of condition
O
Precautionary procedure
K

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

What was found

(CAN) STEP WORN INTO BOLT FROM ROTOR BRAKE PADS AT .700 INCH AND 1.760 INCHES FROM BOLT HEAD. WEAR APPEARS TO COME FROM CHATTERING OF THE PADS IN THE RETRACTED POSITION. DUE TO ACCELERATED WEAR, BOLTS WILL BE REPLACED ON A 100 HOUR BASIS.

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