# SDR CALA2017101303593

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 13, 2017
- Submitted: October 13, 2017
- Operation: Air carrier
- Aircraft: [N76064](https://openairdocs.org/aircraft/N76064), registered now
- Make and model: Boeing 767424ER
- Aircraft serial: 29459
- Aircraft time: 67,738 hours, 11,272 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Failed
- Location: Emergency Lights
- 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/CALA2017101303593

## Discrepancy

L4 DOOR EXTERIOR SLIDE EMERGENCY LIGHT INOPERATIVE.   HAD A GOOD GROUND AT THE SOCKET, NO POWER.  REMOVED THE POWER SUPPLY AND BATTERY,  ALL FUSES CHECKED OK.  TROUBLESHOT IAW WD 33-51-21, CHECKED L397 FOR SHORTS AND OPENS, NONE FOUND, CHECKED BATTERY PACK M739 AND FOUND FUSE SE11 BLOWN (PINS 9 & 10).  REPLACED THE FUSE AND IT WOULD BLOW AGAIN,  REPLACED THE BATTERY PACK M739 AND ALL EMERGENCY LIGHTS WORK.   OK TO CONTINUE.

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