# SDR ASAA2018112637056

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 23, 2018
- Submitted: November 27, 2018
- Operation: Air carrier
- Aircraft: [N564AS](https://openairdocs.org/aircraft/N564AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35103
- Aircraft time: 46,138 hours, 13,936 cycles
- System (JASC): [3300 · Lighting System](https://openairdocs.org/jasc/3300)
- Part: Backlight
- Condition: Malfunctioned
- Location: Control Panel
- Stage of operation: TX
- 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/ASAA2018112637056

## Discrepancy

MCP HAS NO LIGHTING. THIS OCCURED AFTER EXTERNAL POWER WAS INTERUPTED SEVERAL TIMES. GROUNDED - YES. VERIFIED DEFECT, CYCLED A/C PWR REF B737-800 AMM 20-60-99, MCP LIGHTING WAS RE-ESTABLISHED. ACCOMPLISHED DFCS AUTO TEST AND BITE B737-800 FIM 22-11 TASK 801 NO FAULTS, ACCOMPLISHED MODE CONTROL PNL TESTS REF FIM 22-11 TASK 803 ALL TESTS PASS.

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