# SDR ASAA2014020206756

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 2014
- Submitted: February 4, 2014
- Operation: Air carrier
- Aircraft: [N594AS](https://openairdocs.org/aircraft/N594AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35191
- Aircraft time: 22,663 hours, 6,947 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Computer
- Part number: 8221604102
- Part serial: 4094GH
- Condition: Failed
- Location: Flt Controls
- Part time: 2,049 hours, 655 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014020206756

## Discrepancy

STABILIZER OUT OF TRIM LIGHT AT FL 385, 12 KTS FASTER THAN COMMAND SPEED.  OUT OF TRIM WHEN AUTOPILOT A ENGAGED, WAS NOT TRIMMING. ACFT GROUNDED.   HARD FAILURE DURING SPEED-STAB BITE LIBRARY TEST 60.32,   REPLACED FCC "A" IAW AMM 22-11-33, OPS CHECK GOOD. BITE TEST GROUP NR 35, AND DFCS LRU INTERFACE TEST FOR FCC, AND LAND VERIFY TEST CHECKED GOOD IAW AMM 22-11-33 AND 22-11-00.  HGS CHECKED GOOD IAW AMM 34-36-00, ACFT REMAINS AUTOLAND AND HGS CAT III QUALIFIED, SCREW REFLECTS SAME.

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