Service difficulty report · Crankcase · Cessna 172N

Difficulty date
June 13, 2001
Submitted
August 7, 2001
Operation
General aviation
Make and model
Cessna 172N
Engine
Lyc O320H2AD
Propeller
Mcauly 1C160DTM
Part
Crankcase
Part number
L801776
Condition
Faulty
Location
Reciprocating En
Component
Reciprocating En · Lyc · O320H2AD
Stage of operation
IN
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

(AUS) CRANKCASE INCORRECTLY LINE BORED REDUCING DECK HEIGHT BY 1.016MM(0.040IN). THIS ALLOWED NO3 PISTON TO CONTACT THE CYLINDER HEAD.METAL CONTAMINATION OF ENGINE. PERSONNEL/MAINTENANCE ERROR.

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