# SDR ASAA2017100122094

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2017
- Submitted: October 3, 2017
- Operation: Air carrier
- Aircraft: [N423AS](https://openairdocs.org/aircraft/N423AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35206
- Aircraft time: 17,758 hours, 5,856 cycles
- System (JASC): [3300 · Lighting System](https://openairdocs.org/jasc/3300)
- Part: Light
- Condition: Intermittent
- Location: Control Panel
- 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/ASAA2017100122094

## Discrepancy

PRESSURIZATION CONTROL PANEL BACKLIGHTING INOPERATIVE.  PRESSURIZATION OPERATES NORMALLY.  ACFT GROUNDED. PERFORMED FIM 21-31, TASK 803, STEP G.  LIGHTING ON PANEL RETURNED TO NORMAL. INTERMITTENT FAULT AND SYSTEM IS SERVICEABLE IAW FIM.

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