# SDR ASAA2022123141328

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 31, 2022
- Submitted: January 3, 2023
- Operation: Air carrier
- Aircraft: [N946AK](https://openairdocs.org/aircraft/N946AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44085
- Aircraft time: 653 hours, 174 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Unknown
- Condition: Unknown
- Location: Thrust
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022123141328

## Discrepancy

IN CRUISE FLIGHT, THRUST MODE SYSTEM IN CRZ INSTEAD OF CLB. GROUNDED - YES. PERFORMED DFCS OPS TEST PER  AMM 22-11-740-801 OPS TEST PASSED. DFCS FAULT REVIEW SHOWS NO FAULTS ON LAST LEG. AUTO THROTTLE OPS TEST PER AMM 22-31-00-710-801 TEST PASSED NO AUTOTHROTTLE FAULTS NOTED ON LAST LEG. PERFORMED DFCS LRU REPLACEMENT TESTS PER AMM 22-11-00-740-812 FOR FCC,FMC, AUTO THROTTLE, MCP, ADIRU. ALL A/T, DFCS TESTS PASSED. NO ENGINE FAULTS NOTED ON OMF.

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