# SDR 2011FA0000014

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2010
- Submitted: January 6, 2011
- Operation: General aviation
- Aircraft: [N799CZ](https://openairdocs.org/aircraft/N799CZ), registered now
- Make and model: Beech 99
- Registry model: [Beech 99](https://openairdocs.org/model/beech-99) (OpenAirDocs)
- Aircraft serial: U68
- Engine: Pwa PT6A27
- System (JASC): [3410 · Flight Environment Data](https://openairdocs.org/jasc/3410)
- Part: Sensor
- Part number: 91000003001
- Part serial: 10313
- Condition: Cracked
- Location: Efis
- Part time: 29 hours, 30 cycles
- Component: Efis, EFD1000C3
- Component part number: 91000001004
- Stage of operation: CR
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2011FA0000014

## Discrepancy

ACFT EXPERIENCED "CROSS CHECK ATTITUDE" INDICATION ON AVIONICS PRIMARY FLIGHT DISPLAY (EFIS) AND HEADING INDICATIONS OF UP TO 90 DEGREES OFF LT AND RT WHILE IN CRUISE FLIGHT.

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