Service difficulty report · Drive Unit · Cirrus SR22T

Difficulty date
March 21, 2023
Submitted
March 21, 2023
Operation
General aviation
Aircraft
N118EB
Make and model
Cirrus SR22T
Aircraft serial
1990
Aircraft time
449 hours
Engine
Cont TSIO550K
Engine time
449 hours
Propeller
Hartzl PHCJ3YF1
Part
Drive Unit
Part number
11331804
Condition
Stripped
Location
Engine
Component
A/C Drive Assy
Component part number
11331804
Stage of operation
IN
How discovered
V
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

AFTER AN UNSCHEDULED LANDING BECAUSE OF A LEFT MAGNETO PROBLEM, MAINTENANCE FOUND THE A/C DRIVE PULLEY TO SPLINE SHAFT MISSING 3 OF 4 MOUNTING BOLTS. FOUND THREADS IN PULLEY STRIPPED OUT.

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