# SDR CALA2026090319228

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 2026
- Submitted: September 3, 2026
- Operation: Air carrier
- Aircraft: [N18223](https://openairdocs.org/aircraft/N18223), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28932
- Aircraft time: 82,900 hours, 31,137 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Fuse
- Condition: Open
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026090319228

## Discrepancy

UPON INSPECTION, FOUND EMERGENCY EXIT LIGHTS NEAR THE OVERWING EXIT DOORS INOP. INOP LIGHTS INCLUDE SEAT MOUNTED FLOOR PROXIMITY LIGHTS FROM AISLES 15 TO 21 AND FWD EXIT INDICATOR SIGNS (BOTH LH AND RH) PERFORMED CONTINUITY CHECK OF FUSES AT EPSU M1694 REF WDM 33-51-21-1 ALL GOOD. REPLACED BATTERY AT M1694, NO HELP. REPLACED CHARGER ASSY AT M1694, NO HELP. AFTER REPLACMENT, FOUND FUSE 2 OPEN. REPLACED FUSE AND LIGHT CAME ON BRIEFLY THEN SHORTED OUT AND BLEW THE FUSE. INSPECTED ALL VISIBLE WIRES AND ALL CONNECTORS DOWNSTREAM OF M1694. FOUND NO DAMAGE. CLEANED EVERY CONNECTOR AND RECONNECTED ONE AT A TIME TO ISOLATE SHORT AND FOUND NONE AFTER COMPLETE CIRCUIT REASSEMBLY. ALL LIGHTS NOW ILLUMINATE

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