# SDR CALA2025040703585

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 2025
- Submitted: April 7, 2025
- Operation: Air carrier
- Aircraft: [N57864](https://openairdocs.org/aircraft/N57864), registered now
- Make and model: Boeing 757-33N
- Registry model: [Boeing 757-33N](https://openairdocs.org/model/boeing-757-33n) (OpenAirDocs)
- Aircraft serial: 32588
- Aircraft time: 71,602 hours, 22,098 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: Inoperative
- Location: Zone 200
- 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/CALA2025040703585

## Discrepancy

EMERGENCY LIGHTS - OPERATIONAL TEST WITH THE TEST SWITCH PROCEDURE - ROW 22 RH OVERWING EXIT IDENTIFIER LIGHT DOES NOT TURN ON REPLACED ALL LAMPS ON THE ROW 22 RH OVERWING EXIT LIGHT REF AMM 33-51-10. LIGHT STILL DOES NOT TURN ON. SUSPECT BAD ASSMEBLY.  REMOVED AND REPLACED EMERGENCY LIGHT POWER SUPPLY BATTERY IN REFERENCE 757 AMM 33-51-07. OPS CHECK GOOD AT THIS TIME.

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