Service difficulty report · Coupler · Lkheed 188A

Difficulty date
April 20, 2008
Submitted
May 2, 2008
Operation
General aviation
Make and model
Lkheed 188A
Engine
Allsn 501D13
Propeller
Allsn A6441FN606
Part
Coupler
Condition
Unknown
Location
Eng/Gearbox
Stage of operation
IN
How discovered
9
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) DURING START SEQUENCE OF NR 4 ENGINE, IT WAS OBSERVED THAT RPM AND ACCELERATION CLIMBED TOO FAST, BEFORE LIGHT OFF, ENGINE START ABORTED AND FOUND ENGINE DECOUPLED FROM GEARBOX. SUSPECT TORQUE SHAFT COUPLER (TC NR 20080422003)