# SDR SWAA2025110330434

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 31, 2025
- Submitted: November 3, 2025
- Operation: Air carrier
- Aircraft: N7728D
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 33925
- Aircraft time: 62,177 hours, 32,973 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Wire Harness
- Condition: Disconnected
- 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/SWAA2025110330434

## Discrepancy

R1 DOOR, EMERGENCY EXIT SIGN WILL NOT ILLUMINATE.   REMOVED AND REPLACED M1675 POWER SUPPLY IAW AMM 33-51-06. NO HELP.  REMOVED AND REPLACED M1675 BATTERY IAW AMM 33-51-06. NO HELP. REINSTALLED ORIGINAL BATTERY IAW AMM 33-51-06.  FOUND FWD SERVICE DOOR EMERGENCY LIGHT POWER HARNESS DISCONNECTED AT D40042P. RECONNECTED D40042P. PERFORMED EMERGENCY LIGHT OPS CHECK IAW AMM 33-51-00. NO FURTHER DEFECTS NOTED.

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