# SDR ASAA2012120593406

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2012
- Submitted: December 7, 2012
- Operation: Air carrier
- Aircraft: [N569AS](https://openairdocs.org/aircraft/N569AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35184
- Aircraft time: 22,016 hours, 7,044 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Computer
- Part number: 8221604101
- Part serial: 16GXT4
- Condition: Failed
- Location: Ee Bay
- Part time: 22,024 hours, 7,047 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2012120593406

## Discrepancy

WHEN F/O SIDE IS THE MASTER ON THE AFDS WITH A/P ON OR OFF SELECTED SPEED IN MCP WINDOW DOES NOT CHANGE W/SPEED SELECTOR KNOB MOVEMENT.  ALL MODES TOGA, LVL CHANGE, SPEED, VNAV SPEED INTV, INOP WHEN CAPTS SIDE IS AFDS MASTER EVERYTHING APPEARS TO OPERATE NORMALLY.  REPLACED FCC B IAW MM 22-11-33 OPS CKS NORMAL.  DFCS FCC B LRU INTERFACE GRP 35 BITE CKS NORMAL. DFCS LAND VERIFY GRP 49 BITE CKS NORMAL. GROUND VERIFICATION TEST SUCCESSFUL.

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