# SDR CALA2026081118460

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2026
- Submitted: August 11, 2026
- Operation: Air carrier
- Aircraft: [N34131](https://openairdocs.org/aircraft/N34131), registered now
- Make and model: Boeing 757224
- Aircraft serial: 28971
- Aircraft time: 102,972 hours, 21,958 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 20121
- Condition: No Test
- 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/CALA2026081118460

## Discrepancy

EMERGENCY LIGHTS  FOR SEATS 7C TO 21 C INOPERATIVE FOR TEST. R & R EMERGENCY LIGHT POWER SUPPLY ABOVE DOOR 2L. NO HELP. REF AMM 33-51-07.  SWAPPED KNOWN GOOD BATTERY TO POWER SUPPLY AT DOOR 2L LOCATION, IAW AMM 33-51-07, NO JOY. IAW WDM 33-51-13-2 AND DWG 3351DD16578 POWER SUPPLY 10919 LOCATED AT BS 840, WL 273, RBL 49. FOUND PLACARD FOR M10919 LOCATED WHERE M10567 LOCATED BUT PLACARDED M10568. FOUND PLACARD IN LOCATION FOR M10568 PLACARDED M10567. REALIGNED THREE PLACARDED PANELS TO CORRECT EQUIPMENT LOCATIONS IAW WDM 33-51-13-2. FOUND POWER SUPPLY UNIT M10919 INOPERATIVE,  R & R M10919, OPS CHKD OK IAW AMM 33-51-07.

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