# SDR ASAA2023092145230

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 2023
- Submitted: September 22, 2023
- Operation: Air carrier
- Aircraft: [N917AK](https://openairdocs.org/aircraft/N917AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 67500
- Aircraft time: 666 hours, 203 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Fmc
- Part number: 8221604102
- Part serial: 4RN1MF
- Condition: Faulty
- Location: E/E Shelf E1-1
- Part time: 659 hours, 201 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023092145230

## Discrepancy

WHILE ACCOMPLISHING TASK CARD 22-ASA-01, FOUND FAULT 22-11191 MT CMD MON DURING THE DUAL TEST 60.35. FCC-A. GROUNDED - YES. SWAPPED FCC'S AND THE DISCREPANCY FOLLOWED TO CHANNEL B. PLACED FCC-B BACK INTO ITS ORIGINAL POSITION AND REPLACED FCC-A REF MM 22-11-33/401. ALL TESTS NOW NORMAL.

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