# SDR ASAA2023012041607

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 2023
- Submitted: February 1, 2023
- Operation: Air carrier
- Aircraft: [N442AS](https://openairdocs.org/aircraft/N442AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43293
- Aircraft time: 33,992 hours, 10,754 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Switch
- Condition: Faulted
- Stage of operation: NR
- 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/ASAA2023012041607

## Discrepancy

GREEN LED "A/T ARM" LIGHT NOT ILLUMINATING. GROUNDED - YES. AUTHOTHROTTLE BITE PROCEDURE ACCOMPLISHED IAW B737-900 FIM 22-31 TASK 801 SYSTEM CHECKED AND FOUND OK. MCP A/T MODE SELECTOR SWITCH PROBLEM FIM 22-31 TASK 809 ACCOMPLISHED NO FAULTS SEEN.  ORIG SUB DATE:  1/24/2023

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