# SDR CALA2026070617570

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2026
- Submitted: July 6, 2026
- Operation: Air carrier
- Aircraft: [N76065](https://openairdocs.org/aircraft/N76065), registered now
- Make and model: Boeing 767424ER
- Aircraft serial: 29460
- Aircraft time: 94,205 hours, 14,899 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Wire Harness
- Part number: 4NS0962055
- Condition: Damaged
- 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/CALA2026070617570

## Discrepancy

EMERGENCY LIGHTS INOP FROM ROW 50 BACK INOP.  INITIALLY WHEN TESTING PATH LIGHTS, NOTICED LIGHTS FROM 50FD WERE ON BUT DIM & PATH LIGHTS AFT GOT DIMMER. LIGHT AFT OF 52FD WERE COMPLETLY INOP.   SUSPECT THE BATTERY PACK & POWER SUPPLY. USED GOOD PARTS TO TEST IAW AMM 33-51-07-002-014-001 & 33-51-07-022-005-001. NO FIX.  ORIG PARTS BACK ON, CARRIED OUT WIRING INSPS FROM SEAT 50DEF AFT. NO ISSUES NOTICED. FROM SEAT 51DEF & 52DEF, DISCONNECTED THE SEAT - SEAT CABLE.  FWD LIGHTS BACK TO NORMAL BRIGHTNESS, BUT WHEN RECONNECT, DIMMNESS OF ALL PATH LIGHTS BTWN 50DEF AFT DIMMER.  FOUND CENTER AISLE LIGHTS DIM FROM ROW 47 TO 54. T/S IAW WDM 33-51-18. DISCONNECTED HARNESS AT ROW 47 WITH DAMAGED PIN. SWAPPED WITH ROW 54 HARNESS. INSTALLED  NEW HARNESS AT ROW 52, & HARNESS AT ROW 54 IAW WDM 33-51-18-901. & AMM 20-60-03. OPS CHKD GOOD.

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