# SDR ASAA12511657

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 5, 2012
- Submitted: June 7, 2012
- Operation: Air carrier
- Aircraft: [N589AS](https://openairdocs.org/aircraft/N589AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35686
- Aircraft time: 17,163 hours, 5,470 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Part number: 1741010201
- Part serial: 004376
- Condition: Failed
- Location: Flight Deck
- Part time: 25,153 hours, 7,839 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA12511657

## Discrepancy

F/O'S FMC BRIGHT/DIM KNOB MOVES SIDE TO SIDE WHEN ROTATED THE SCREEN BLACKS OUT.  VERIFIED DISCREPANCY.  R & R F/O FMC CDU REF MM 34-61-01-000-802 & 34-61-01-400-802.  TESTS OK IAW SAME REF.

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