# SDR ASAA2021032834424

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2021
- Submitted: March 29, 2021
- Operation: Air carrier
- Aircraft: [N915AK](https://openairdocs.org/aircraft/N915AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44080
- Aircraft time: 27 hours, 23 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Module
- Part number: 65528203
- Part serial: F09109
- Condition: Failed
- Location: E/E Bay
- Part time: 28 hours, 23 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021032834424

## Discrepancy

DURING ACCOMPLISHMENT OF FMS/NAV TC 22-ASA-01, FAILURE OF DUAL STAB BITE LIBRARY 35 WITH CHANNEL A AND B FAULT CODE 22-11191 AND 22-11194 'MT CMD MON'. GROUNDED - YES. REF B737-9 IFIM 22-11-00-810-947 AND -950. REPLACED IFSAU REF B737-9 AMM 22-11-37-400-801. OPS NORMAL.

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