# SDR AU010271

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 12, 2001
- Submitted: April 4, 2001
- Operation: General aviation
- Make and model: Fokker F.28 MK 1000
- Registry model: [Fokker F.28 MK 1000](https://openairdocs.org/model/fokker-f-28-mk-1000) (OpenAirDocs)
- Engine: Rroyce SPEY55515
- System (JASC): [2212 · Altitude Controller](https://openairdocs.org/jasc/2212)
- Part: Warning System
- Part number: 637SUE1
- Condition: Failed
- Location: Altitude Control
- Stage of operation: CR
- How discovered: O
- Nature of condition: P
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU010271

## Discrepancy

(AUS) ALTITUDE ALERT SYSTEM FAILED. ALTITUDE PRESELECT COUPLER CHANGED.

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