SDR 2005FA0000742

Service difficulty report · Pump · Cessna 172P

Difficulty date: February 2, 2005
Submitted: May 18, 2005
Operation: General aviation
Aircraft: N65045
Make and model: Cessna 172P
Aircraft serial: 17275674
Engine: Lyc O320*
System (JASC): 3710 · Vacuum Distribution System
Part: Pump
Part number: ADV211CC
Part serial: 2110014403
Condition: Overheated
Location: Engine
Part time: 287 hours
Stage of operation: NR
How discovered: O
Nature of condition: M
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

REMOVED VACUUM PUMP DUE TO OVERHEAT CONDITION, BACK OF PUMP WAS DISCOLORED, THE TACH CABLE THAT RUNS ABOUT 1 INCH AWAY FROM THE VACUUM PUMP WAS MELTED ABOUT 4 INCHES. THIS IS THE SECOND PUMP IN THE FLEET WITH THIS TYPE OF FAILURE, BOTH PUPS HAD LESS THAN 300 HOURS SINCE NEW.

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