# SDR ASAA2022070938984

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 9, 2022
- Submitted: July 11, 2022
- Operation: Air carrier
- Aircraft: [N926AK](https://openairdocs.org/aircraft/N926AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43314
- Aircraft time: 1,609 hours, 474 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Fcu
- Part number: 8221604102
- Part serial: 4R075T
- Condition: Faulty
- Location: E/E Rack E1
- Part time: 1,598 hours, 472 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022070938984

## Discrepancy

REF ASA TSR712591 TECH SERVICES REQUEST FOLLOW UP DUE TO HISTORY OF AFCS A/T DC-1 CIRCUIT BREAKER POPPING DURING ENGAGEMENT OF AUTO THROTTLE. FCC-A REPLACEMENT REQUIRED. GROUNDED - YES. REPLACED FCC-A REF B737-9 AMM 22-11-33. LRU REPLACEMENT TEST BITE GROUP #35 GOOD. LAND VERIFY TEST GOOD. LOADED SOFTWARE 2274-COL-AC2-26 TO FCC-A REF AMM 22-11-33-470-802 VERIFIED FCC-A AND FCC-B OPS MATCH.

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