SDR 2020FA0000249

Service difficulty report · Crankshaft · Cessna 150L

Difficulty date: May 12, 2020
Submitted: May 12, 2020
Operation: General aviation
Aircraft: N21900
Make and model: Cessna 150L
Aircraft serial: 15074521
Aircraft time: 6,956 hours
Engine: Cont O200A
Engine time: 6,956 hours
Propeller: Mcauly 1A101HCM
System (JASC): 8520 · Reciprocating Engine Power Section
Part: Crankshaft
Part number: 653012
Part serial: R193841
Condition: Cracked
Location: Engine
Part time: 6,956 hours
Component: Engine · Cont · 0200A
Component part number: 0200A
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

AIRCRAFT IN FOR ANNUAL INSPECTION, REMOVED SPINNER TO CHECK PROP HUB, S/N, MODEL. NOTICED CRANKSHAFT OIL PLUG MISSING, LOOKED INSIDE CRANKSHAFT BORED HOLE I NOTICE A 1/2" CRACK AT BOTTOM OF BORED HOLE CRACK STARTS AT CENTER OF CRANKSHAFT AND RADIATES OUTWARD.

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