SDR CA981013003

Service difficulty report · Muffler · Cessna 172L

Difficulty date: September 28, 1998
Submitted: March 26, 2000
Operation: General aviation
Make and model: Cessna 172L
Engine: Lyc O320E2D
System (JASC): 7820 · Engine Noise Suppressor
Part: Muffler
Part number: 5000127B3
Condition: Cracked
Location: Engine
Part time: 542 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

(CAN) DURING OIL CHANGE, THE OVERBOARD PIPE ON THE MUFFLER WAS FOUND LOOSE. A CRACK WAS FOUND IN THE EXHAUST PIPE BRACE AND COLLECTOR CAN JOINT RUNNING HALF WAY ROUND THE CIRCUMFERENCE, TOTALLING ABOUT 4 INCHES IN LENGTH. SUBMITTER SAYS THESE UNITS LAST ABOUT 1,000 TO 1,200 HOURS BEFORE PROBLEMS OCCUR.

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