Service difficulty report · Exhaust Valve · Cessna 172S

Difficulty date
November 16, 2015
Submitted
September 19, 2016
Operation
General aviation
Aircraft
N861RB
Make and model
Cessna 172S
Aircraft serial
172S
Aircraft time
1,817 hours
Engine
Lyc IO360L2A
Engine time
1,817 hours
Part
Exhaust Valve
Condition
Leaking
Location
Nr 4 Cylinder
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

DURING 100 HOUR, ANNUAL INSPECTION, CYLINDER NR 4 FAILED DIFFERENTIAL CYLINDER LEAK CHECK, EXCESSIVE LEAK BY EXHAUST VALVE.

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