Service difficulty report · Nut · Cessna 421C

Difficulty date
March 25, 2013
Submitted
September 14, 2015
Operation
General aviation
Make and model
Cessna 421C
Aircraft time
7,739 hours
Engine
Cont GTSIO520L
Propeller
Mcauly 3FF32C501
Part
Nut
Part number
652541
Condition
Split
Location
Cowl
Part time
503 hours
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

(CAN) THE PILOT REPORTED THAT DURING A PRE-FLIGHT WALK-AROUND INSPECTION HE FOUND A LOOSE NUT IN THE RT ENGINE COWL. THE NUT WAS FOUND TO BE SPLIT ACROSS THE THREADS, DOWN ITS ENTIRE LENGTH. UPON FURTHER INSPECTION OF THE ENGINE, A FWD GEARBOX UPPER THROUGH STUD NUT WAS FOUND MISSING. THE ENGINE O/H FACILITY, RAM AIRCRAFT WAS CONTACTED AND THE NUT WAS REPLACED

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