# SDR CALA2026020413549

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 2026
- Submitted: February 4, 2026
- Operation: Air carrier
- Aircraft: [N37518](https://openairdocs.org/aircraft/N37518), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 64495
- Aircraft time: 17,074 hours, 5,655 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Fuse
- Part number: 21506
- Condition: Faulted
- 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/CALA2026020413549

## Discrepancy

RH EXT ESCAPE SLIDE LIGHT DAYLIGHT OPS ONLY PLACARDS APPLIED *DM* SEE M/L FOR RH FWD EMERG SLIDE LIGHT L730, IF NEEDED. TROUBLESHOT EMERGENCY EXTERIOR ESCAPE LIGHT-DOOR 1R. SUSPECT BLOWN FUSE IN BATTERY ASSEMBLY SEE AMM33-51-06-960-804 FOR FUSE REPLACEMENT AND WDM 33-51-12-4. FUSES ON ORDER. FUSE COMFIRMED FAULTY, REPLACED IAW AMM 33-51-06-960-801. OPS CHECK PASSED.

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