# SDR 2004FA0000320

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2004
- Submitted: April 26, 2004
- Operation: General aviation
- Aircraft: [N78940](https://openairdocs.org/aircraft/N78940), registered now
- Make and model: Mooney M20C
- Registry model: [Mooney M20C](https://openairdocs.org/model/mooney-m20c) (OpenAirDocs)
- Aircraft serial: 1974
- Engine: Lyc O360A1D
- System (JASC): [8300 · Accessory Gearboxes](https://openairdocs.org/jasc/8300)
- Part: Gear
- Condition: Worn
- Location: Accessory G/B
- Component: Accessory G/B
- Component part number: 73818
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2004FA0000320

## Discrepancy

REMOVED OIL PUMP TO CHECK ON TYPE OF GEARS, FOUND SINTERED IRON IMPELLERS.  REPLACED WITH HARDEN GEAR KIT.

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