# SDR SIMA202007098001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 8, 2020
- Submitted: July 9, 2020
- Operation: Air carrier
- Aircraft: [N229NN](https://openairdocs.org/aircraft/N229NN), 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: 17000547
- Aircraft time: 10,833 hours, 7,218 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Unit
- Condition: Inoperative
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA202007098001

## Discrepancy

FWD LT EXIT ID SIGN INOP.  BELIEVED FAULT TO BE EXIT IDENTIFIER SIGN DUE TO ALL OTHER SIGNS ILLUMINATING.  R&R INOP EXIT IDENTIFIER SIGN IAW AMM 33-50-15.  DID NOT FIX.  TROUBLESHOT IAW WM 33-50-50.  FOUND PROBLEM TO BE FAULTY EMERGENCY LIGHT POWER UNIT 2.  R&R IAW AMM 33-50-01.  NO FURTHER DEFECTS NOTED.  OPC GOOD.

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