# SDR CALA2026030514355

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 4, 2026
- Submitted: March 5, 2026
- Operation: Air carrier
- Aircraft: [N213UA](https://openairdocs.org/aircraft/N213UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30219
- Aircraft time: 83,127 hours, 17,718 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Light
- Part number: D71702030
- Condition: Shorted
- 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/CALA2026030514355

## Discrepancy

EMERGENCY LIGHTS - OPS TEST WITH TEST SWITCHES PROCEDURE,  MULTPLE LIGHTS ASSOCIATED WITH POWER SUPPLY M33094 INOPERATIVE.  FOUND POWER SUPPLY M33094 FUSE F3 OPEN, REPLACED POWER SUPPLY AS A PRECAUTION IAW AMM 33-51-06-960-803, ON FOLLOW UP TEST, CONDITION SAME.   SLAVED IN KNOWN WORKING BATTERY PACK IAW AMM 33-51-06-960-802, CONDITION SAME.  OPENED R1 DOOR OVERHEAD PANEL & FIRST CLASS FWD OTBD RT CEILING PANEL TO ACCESS WIRING,  PLUS DISCONNECTED FIRST CLASS SEAT EMERGENCY LIGHT HARNESSES & LIGHTS TO FACILITATE LOCATING POSSIBLE SHORT IN WIRING FROM PIN 14 OF POWER SUPPLY M33094. FOUND SEAT 1CD EMERGENCY LIGHT MODULE.  REROUTED & SECURED WIRE W6171-0012-16 AWAY FROM INDUCTANCE CABLE TO PROPER ROUTING. BOTH WIRES AT EMERGENCY LIGHT MODULE ASSY. SHORTED INSIDE MOUNTING BRACKET. REMOVED AND REPLACED SEAT 1CD LEMERGENCY LIGHT MODULE ASSY.

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