# SDR ASAA2014030907122

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 2014
- Submitted: March 11, 2014
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 27,983 hours, 8,378 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Warning Light
- Condition: Illuminated
- Location: Speed Trim
- Stage of operation: TX
- 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/ASAA2014030907122

## Discrepancy

SPEED TRIM FAIL LIGHT ON AFTER ENGINE START.  ACFT GROUNDED.  WHEN PERFORMING FIM TASK 22-11, TASK 801, DFCS SYSTEM BITE, UNABLE TO ENTER BITE TEST DO TO CODE 22-11363. PULLED FCC-A DC CIRCUIT BREAKER & RAN BITE FOR "B" CHANNEL ONLY.  RESET FCC-A DC C/B & OPENED FCC-B DC CIRCUIT BREAKER & RAN TEST FOR "A" CHANNEL.  RESET FCC-B CIRCUIT BREAKER.  PERFORMED SPEED TRIM FAIL LIGHT FIM TASK 22-13, TASK 817.  TEST PASSED A&B.  REPAIR CONFIRMATION COMPLETED. SPEED TRIM FAIL LIGHT IS OFF.

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