# SDR 99ZZZX2639

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N2977J](https://openairdocs.org/aircraft/N2977J), registered now
- Make and model: Cessna 150G
- Registry model: [Cessna 150G](https://openairdocs.org/model/cessna-150g) (OpenAirDocs)
- Aircraft serial: 15065777
- System (JASC): [3416 · Altimeter, Barometric/Encoder](https://openairdocs.org/jasc/3416)
- Part: Encoder
- Part number: A30
- Condition: Malfunctioned
- Location: Cockpit
- Component: Ack
- 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/99ZZZX2639

## Discrepancy

MODE C REPORTED AS INVALID.  RETURNED DEFECTIVE ENCODER TO MANUFACTURER FOR REPAIR.  PERFORMED BI-ANNUAL TESTS AND INSPECTIONS.

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