# SDR ASAA2017042220499

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 22, 2017
- Submitted: April 24, 2017
- Operation: Air carrier
- Aircraft: [N506AS](https://openairdocs.org/aircraft/N506AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35690
- Aircraft time: 33,724 hours, 10,290 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Unknown
- Condition: Malfunctioned
- Location: Autopilot Sys
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017042220499

## Discrepancy

"SPEED TRIM FAIL" LIGHT ILLUMINATED ON RECALL - EXTINGUISHED UPON RESET. GROUNDED - YES. PERFORMED FLIGHT CONTROL SYSTEM BITE PROCEDURE REF AMM 22-11 TASK 801. PASSES ALL TESTS. LAND VERIFY TESTS PASS REF AMM 22-00-01. HGS OPERATIONAL TESTS PASS REF AMM 34-36-00. LWMP STATUS REMAINS CAT 111A AUTOLAND + HGS. NO HISTORY 30 DAYS.

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