# SDR CALA2026052016415

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2026
- Submitted: May 20, 2026
- Operation: Air carrier
- Aircraft: [N77539](https://openairdocs.org/aircraft/N77539), registered now
- Make and model: Boeing 737824
- Aircraft serial: 63642
- Aircraft time: 27,058 hours, 10,228 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: Faulted
- 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/CALA2026052016415

## Discrepancy

RT INTERIOR OVERWING EXIT EMERGENCY LIGHTS INOPERATIVE, ALONG WITH MIDDLE ISLE EXIT SIGN R&R STA 565 WL 213 RBL 68 EMERGENCY EXIT LIGHT BATTERY PACK IAW AMM 33-51-06-960-805.

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