SDR 95ZZZX2720

Service difficulty report · Cylinder · Cessna 340A

Difficulty date: April 7, 1995
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N300JM
Make and model: Cessna 340A
Aircraft serial: 340A0233
Engine: Cont TSIO520N
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Cylinder
Condition: Defective
Location: Engine
Part time: 3,527 hours
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

AT OVERHAUL, 5 CYLINDERS WERE CERAMICHROME AND 1 WAS CHANNELCHROME. AT THE 100-HOUR INSPECTION. COMPRESSION WAS HIGH 60'S ON THE CERAMICHROME, 77 ON THE CHANNELCHROME. A PRE-BUY INSPECTION WAS DONE 2 HOURS LATER AND THE COMPRESSION DROPPED 20 POUNDS ON THE CERAMICHROME. THIS PROBLEM IS CONSISTENT ON CERAMICHROME CYLINDERS.

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