# SDR 97ZZZX1884

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N3129D](https://openairdocs.org/aircraft/N3129D), registered now
- Make and model: Cessna 180
- Registry model: [Cessna 180](https://openairdocs.org/model/cessna-180) (OpenAirDocs)
- Aircraft serial: 31927
- Engine: Cont O470J
- System (JASC): [8540 · Reciprocating Engine Rear Section](https://openairdocs.org/jasc/8540)
- Part: Cam Gear
- Part number: 535660
- Condition: Teeth Broken Off
- Location: Assy Case
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX1884

## Discrepancy

NOISE HEARD AT IDLE POWER AFTER LANDING THAT SOUNDED LIKE A ROD KNOCK (OR A WELL RUNNING RADIAL ENG).  DECIDED TO DISASSEMBLE ENGINE FOR OVERHAUL.  FOUND TWO TEETH MISSING FROM CRANK GEAR P/N 536421 AND ONE TOOTH MISSING AND ANOTHER TOOTH CRACKED ON CAM GEAR P/N 535660.  TEETH WERE FOUND IN OIL PAN.  SUSPECT GEARS WERE STRESSED FROM SUDDEN STOPPAGE IN 1972.  ENG TT SINCE CONT REMAN:  2,615 HRS.

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