# SDR ASAA2014070308434

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2014
- Submitted: July 8, 2014
- Operation: Air carrier
- Aircraft: [N517AS](https://openairdocs.org/aircraft/N517AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35197
- Aircraft time: 21,314 hours, 6,410 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Computer
- Part number: 8221604101
- Part serial: 174Y6C
- Condition: Failed
- Location: Flt Control
- Part time: 22,693 hours, 6,942 cycles
- Stage of operation: AP
- 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/ASAA2014070308434

## Discrepancy

ONLY "B" AUTOPILOT DISENGAGED TWICE ON THE APPROACH.  ACFT GROUNDED.  FCC B LOGGED 22-11082 NR 2 SMYD DATA INVALID.  ACCOMPLISHED FIM 22-15, TASK 801.  WIRING CHECKS BETWEEN FCC B AND NR 2 SMYD GOOD.  REPLACED FCCB REF MM 22-11-33, OPS CHECK NORMAL.  REPLACED NR 2 SMYD, REF MM 27-32-42-400-801.  NR 2 SYMD OPS NORMAL REF MM 27-32-42.

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