# SDR DXTA2010072104168

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2010
- Submitted: July 21, 2010
- Operation: Air carrier
- Aircraft: [N873QS](https://openairdocs.org/aircraft/N873QS), registered now
- Make and model: Raythn HAWKER800XP
- Aircraft serial: 258573
- Aircraft time: 5,393 hours, 3,983 cycles
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Indicator
- Part number: 8221110002
- Part serial: 1NJYY
- Condition: Malfunctioned
- Location: Heading
- Part time: 5,393 hours, 955 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2010072104168

## Discrepancy

COPILOTS HEADING INDICATOR WON'T AUTO SLAVE AND FLIGHT DIRECTOR DISAPPEARS.  R & R NR 2 AHRS IAW AMM 34-20-05. PERFORMED COMPASS SWING, FOUND THE NR 2 AHRS UNIT RED FLAGED TWICE DURING COMPASS SWING. TROUBLESHOT SYS TO NR 2 AHRS.  ALL WORK IAW AMM 34-20-05.

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