SDR CA070510004

Service difficulty report · Cylinder · Cessna 421C

Difficulty date: April 20, 2007
Submitted: February 15, 2008
Operation: General aviation
Make and model: Cessna 421C
Aircraft time: 8,572 hours
Engine: Cont GTSIO520L
System (JASC): 8530 · Reciprocating Engine Cylinder Section
Part: Cylinder
Part number: TISN73OCA221
Condition: Broken
Location: Nr 2
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

(CAN) WHEN DOING 100 HRS INSP, FOUND DAMAGE ON COVER VALVE ROCKER CYLINDER NR 4, COVER (PN : 631834) REMOVED AND FOUND RETAINER ROCKER SHAFT (PN: 646032) BROKEN. NEW CYLINDER WAS INSTALLED IN POSITION NR 4. ALSO FOUND CYLINDER NR 2 WITH LOW COMPRESSION (50 PSID), THE CYLINDER WAS REPLACED BY NEW ONE. (TC NR 20070510004)

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