# SDR CALA2026052216479

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2026
- Submitted: May 22, 2026
- Operation: Air carrier
- Aircraft: [N17126](https://openairdocs.org/aircraft/N17126), registered now
- Make and model: Boeing 757224
- Aircraft serial: 27566
- Aircraft time: 99,854 hours, 24,230 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: BPS73
- 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/CALA2026052216479

## Discrepancy

EMERGENCY LIGHT TEST FAILS. THIRD OVERHEAD BIN LIGHT DOESENT LIGHT UP, RELAMP DOES NO GOOD. AFT 9 INTERIOR SEAT MOUNTED ISLE LIGHTS DONT LIGHT UP. SUSPECT BAD BATTERY.  SWAPPED TWO ELECTRICAL CONNECTORS (D80 & D78) IAW WDM 33-51-22-906 FOR EMERGENCY LIGHT BATTERY PACKS AND ISLE LIGHTS WORKED WHILE ELECTRICAL CONNECTORS ARE SWAPPED. R&R RIGHT SIDE POWER SUPPLY IN AFT GALLEY REF AMM 33-51-07. EMERGENCY LIGHTS OPS CHECK GOOD.

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