# SDR CALA2026022514056

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 2026
- Submitted: February 25, 2026
- Operation: Air carrier
- Aircraft: [N27724](https://openairdocs.org/aircraft/N27724), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28791
- Aircraft time: 82,480 hours, 30,456 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Switch
- Part number: 285A17102
- Part serial: D00688
- Condition: Faulted
- Location: Zone 200
- Part time: 82,456 hours, 30,442 cycles
- 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/CALA2026022514056

## Discrepancy

EMERGENCY LIGHTS  OPS CHK,  CREW INDUCED FAULT. EMERGENCY LIGHTS STUCK ON. LOGIC IS OUT OF SEQUENCE IAW FIM 33-50, TASK 801, REMOVED & REPLACED PILOTS EMERGENCY EXIT LIGHT SWITCH S7 IAW WDM 33-51-11-. NO HELP, EXIT LIGHTS REMAIN ON WHEN SWITCH IS IN OFF. FOUND AFT ATTENDANT EMERGENCY LIGHT SWITCH STICKING INTERNALLY.  NEEDS MODULE 285A1710-2 29-3326-9-9002. R & R LIGHTING MODULE AFT ATTENDANTS PANEL. IAW AMM 25-25-11-400-801. EMERGENCY LIGHTS OP CHKD NORMAL FROM FLIGHT DECK AND AFT ATTENDANTS PANEL.IAW AMM 33-51-00-720-801, & 33-51-00-710-80.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.