# SDR 20010518CW001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2001
- Submitted: May 18, 2001
- Operation: General aviation
- Aircraft: [N9514M](https://openairdocs.org/aircraft/N9514M), registered now
- Make and model: Mooney M20F
- Registry model: [Mooney M20F](https://openairdocs.org/model/mooney-m20f) (OpenAirDocs)
- Aircraft serial: 670091
- System (JASC): [3421 · Attitude Gyro and Indicating System](https://openairdocs.org/jasc/3421)
- Part: Gyro
- Part serial: 01895
- Condition: Contaminated
- Location: Cockpit
- Part time: 4,315 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20010518CW001

## Discrepancy

DURING ANNUAL INSPECTION, FOUND LIQUID IN WINDOW OF GYRO, DISCONNECTED LINE TO HAVE WATER FLOW OUT, REMOVED INSTRUMENT.  OPENDED CASE AND FOUND LONG-TERM CORROSION ON ALL INTERNAL PARTS.  REPLACED WITH OVERHAULED INSTRUMENT.  NO OTHER INSTRUMENTS CONTAINED WATER MAY HAVE GOTTEN WATER THROUGH A LEAKING EXTERIOR COWL DECK.

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