# SDR AALA20150730005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 2015
- Submitted: July 31, 2015
- Operation: Air carrier
- Aircraft: [N827NN](https://openairdocs.org/aircraft/N827NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33209
- Aircraft time: 17,546 hours, 6,913 cycles
- System (JASC): [2211 · Autopilot Computer](https://openairdocs.org/jasc/2211)
- Part: Computer
- Part number: 8221604102
- Condition: Faulty
- Location: Autopilot Sys
- Stage of operation: CL
- How discovered: O
- Nature of condition: I
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20150730005

## Discrepancy

AIR INTERRUPT, EMERGENCY DECLARED, LANDING UNEVENTFUL & AIRCRAFT OVERWEIGHT.  DURING CLIMB CREW ENGAGED VNAV & SIMULTANEOUSLY LOST BOTH THE CAPTAIN’S & FIRST OFFICER`S FLIGHT DIRECTORS.  R & R NUMBER 1 FCC COMPUTER IAW AMM 22-11-33.  ALL REQUIRED TESTS PASSED.  NO FAULTS NOTED ON FCC NUMBER 1 & ACCOMPLISHED DFCS BITE IAW FIM 22-11-00.  SYSTEM CHECKED NORMAL.

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