Service difficulty report · Nut · Bell 206L4

Difficulty date
September 18, 2020
Submitted
September 18, 2020
Operation
General aviation
Aircraft
N911YY
Make and model
Bell 206L4
Aircraft serial
52047
Aircraft time
12,268 hours
Part
Nut
Part number
206040078101
Condition
Undertorqued
Location
Mast
Part time
12,268 hours
Component
Mast Assembly · Bell
Component part number
206040014107
Stage of operation
IN
How discovered
V
Nature of condition
W
Precautionary procedure
K

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

What was found

WE REMOVED MAST ASSY P/N 206-040-014-107 S/N 52047 TO REPAIR A LEAKING MAST BEARING SEAL. WHEN REMOVAL OF MAST NUT P/N 206-040-078-101 WAS ATTEMPTED IT WAS FOUND TO BE IMPROPERLY TORQUED. NUT WAS APPROXIMATELY HAND TIGHT AND NOT TO SPECS OF 500-550 FT-LBS. NO DISRUPTION OF SAFETY LOCK OR SEALANT ON LOCK FOUND.

More about the Bell 206L-4