SDR 96ZZZX1783

Service difficulty report · Tachometer · Cessna 172P

Difficulty date: January 12, 1996
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N97LP
Make and model: Cessna 172P
Aircraft serial: 17274398
System (JASC): 7714 · Engine RPM Indicating System
Part: Tachometer
Part number: D11125025
Condition: Sticks
Location: Eng Tachometer
Part time: 21 hours
Component: Mitch
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

INSTALLED NEW MITCHELL TACHOMETER IN AIRCRAFT. NEXT MORNING, TACHOMETER WAS STICKING UNTIL A SHORT WARM-UP. THREE FLIGHTS LATER, STRIKING RECURRED. AT 21.1 TACHOMETER HOURS, STICKING OCCURRED AGAIN ALONG WITH ERRATIC READINGS. REPLACED MITCHELL TACHOMETER WITH RECONDITIONED AC UNIT, NO FURTHER PROBLEMS.

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