# SDR C77A20170823001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 21, 2017
- Submitted: August 23, 2017
- Operation: Air carrier
- Aircraft: [N204NN](https://openairdocs.org/aircraft/N204NN), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000477
- Aircraft time: 6,694 hours, 4,127 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 34002210
- Part serial: 012422
- Condition: Failed
- Location: Emergency Lights
- Part time: 6,694 hours, 4,127 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/C77A20170823001

## Discrepancy

ALL EXIT SIGNS WILL NOT ILLUMINATE.  MAINTENANCE PERFORMED FIM 33-50-00-810-807-A,  FOUND FWD LT ELPU TO BE INTERMITENT,  REMOVED AND REPLACED ELPU IAW AMM 33-50-01, OPS CHECKED GOOD. ACFT OK FOR SERVICE

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