# SDR ASAA2016111318654

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 13, 2016
- Submitted: November 16, 2016
- Operation: Air carrier
- Aircraft: [N413AS](https://openairdocs.org/aircraft/N413AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35205
- Aircraft time: 14,568 hours, 4,683 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Autothrottle Sys
- Condition: Malfunctioned
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016111318654

## Discrepancy

AUTOTHROTTLES WILL NOT ENGAGE IN FLIGHT. ACFT GROUNDED.  AUTOTHROTTLE BITE CHECKED IAW FIM 22-31 TASK 801 SHOWED FAULT 22-31687 ASM-1 LOGGED TWICE FOR LEG 9. PERFORMED TROUBLESHOOTING FOR FAULT 22-31687 IAW FIM 22-32 TASK 819 - AUTOTHROTTLE SERVO MOTOR TEST PASSED WITH NO FAULTS. FAULT IS DEFINED AS NUISANCE FAULT IAW FIM AT THIS TIME. PERFORMED AUTOTHROTTLE OPERATIONAL TEST IAW AMM 22-31-00-710-801 - ALL TESTS PASS. AIRCRAFT IS QUALIFIED FOR CAT IIIA AUTOLAND AND HGS OPS AND STATUS PLACARD REFLECTS SAME.

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