# SDR CALA2026052616528

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 23, 2026
- Submitted: May 27, 2026
- Operation: Air carrier
- Aircraft: [N37253](https://openairdocs.org/aircraft/N37253), registered now
- Make and model: Boeing 737824
- Aircraft serial: 30584
- Aircraft time: 77,676 hours, 29,051 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Wire
- Condition: Disconnected
- 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/CALA2026052616528

## Discrepancy

EMERGENCY LIGHTS OPERATIONAL CHECK - EPL DO NOT ILLUMINATE AT ROWS 29 THROUGH 35. REMOVED AND REPLACED BATTERY PACKS AT ROW 27 FED AND CBA. NO HELP. REPLACED BATTERY POWER SUPPLY AT 27 CBA, NO HELP. ROWS 29-35 EPL STILL DO NOT ILLUMINATE. REF TASK 33-51-06-960-805 AND TASK 33-51-06-960-806. DURING TS FOUND RED AND BLACK WIRES DISCONNECTED BETWEEN ROWS 28 & 29 INSIDE RACEWAY. RECONNECTED WIRES, ALL EMERGENCY LIGHTS OPERATE NORMAL REF CONFIG DWG 3350DD14743 REV A. OK TO CONTINUE.

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