# SDR 2010FA0000421

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2010
- Submitted: April 29, 2010
- Operation: General aviation
- Aircraft: [N5090M](https://openairdocs.org/aircraft/N5090M), registered now
- Make and model: Beech 76
- Registry model: [Beech 76](https://openairdocs.org/model/beech-76) (OpenAirDocs)
- Aircraft serial: ME34
- Aircraft time: 1,036 hours
- System (JASC): [3422 · Directional Gyro and Indicating System](https://openairdocs.org/jasc/3422)
- Part: Module
- Part number: A0511100
- Part serial: 3788
- Condition: Failed
- Location: Zone 200
- Part time: 67 hours
- Stage of operation: CR
- How discovered: V
- Nature of condition: I, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2010FA0000421

## Discrepancy

(YHLR) AA EFD-1000 PRIMARY FLIGHT DISPLAY SHOWS "RSM LINK FAIL" MESSAGE ON INITIALIZATION. RSM WAS REPLACED, NEW SN 3884. PERFORMED SYS OPS CHECKS AND RSM CALIBRATION AS REQUIRED BY DOCUMENT 900-00003-001 REV F, SYS OPS CHECKS SATISFACTORY.

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