# SDR ASAA2017022619946

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 26, 2017
- Submitted: February 28, 2017
- Operation: Air carrier
- Aircraft: [N590AS](https://openairdocs.org/aircraft/N590AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35687
- Aircraft time: 34,780 hours, 10,533 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Warning Flag
- Condition: False Activation
- Location: Hsi
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017022619946

## Discrepancy

YELLOW FD FLAG ON CAPTAIN'S HSI.  ACFT GROUNDED. PERFORMED DFCS CURRENT STATUS ON "A" CHANNEL & NO FAULTS FOUND. FD FLAG EXTINGUISHED AFTER BITE CHECK, IAW AMM 22-11-00-740-801.

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