# SDR CALA2026103020653

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 2026
- Submitted: October 30, 2026
- Operation: Air carrier
- Aircraft: [N66841](https://openairdocs.org/aircraft/N66841), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 42182
- Aircraft time: 36,813 hours, 13,687 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: Inoperative
- Location: Zone 200
- 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/CALA2026103020653

## Discrepancy

FOUND TWO OVERHEAD EMERGENCY LIGHTS INOPERATIVE AT ROWS 9FED & 14FED.  R & R THE EMERGENCY AISLE LIGHTS AT ROWS 9DEF AND 14DEF. NO HELP, LIGHTS INOPERATIVE.    FOUND ALL LIGHTS ASSOCIATED WITH POWER SUPPLY M1676 INOPERATIVE, INCLUDING OVER WING EXIT LIGHT L1209 IAW WDM 33-51-12-8.  R & R THE  POWER SUPPLY BATTERY PACK M1676 IAW AMM 33-51-06, OPS TESTED GOOD.

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