SDR 97ZZZX4906

Service difficulty report · Mast Nut · Bell 407

Difficulty date
September 30, 1997
Submitted
March 26, 2000
Operation
General aviation
Aircraft
N437AL
Make and model
Bell 407
Aircraft serial
53141
Part
Mast Nut
Part number
406017113101
Condition
Loose
Location
T/R
Component
407012100101
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

DAILY INSPECTION FOUND COMPLETE LOSS OF TORQUE ON T/R MAST NUT. THE NUT COULD BE REMOVED BY HAND. THE SAFETY WIRE BETWEEN THE NUT AND THE SUPPORT, (P/N 407-012-106-103) KEPT THE NUT FROM SPINNING OFF OF THE TAIL ROTOR GEARBOX OUTPUT SHAFT.

More about the Bell 407