# SDR DALA2026042002489

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2026
- Submitted: April 20, 2026
- Operation: Air carrier
- Aircraft: [N921DU](https://openairdocs.org/aircraft/N921DU), registered now
- Make and model: Boeing 737932ER
- Aircraft serial: 63532
- Aircraft time: 20,924 hours, 8,419 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- 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/DALA2026042002489

## Discrepancy

AFT OVERWING EXIT ON RT SIDE HAS EXTERIOR LIGHTS INOP AND INTERIOR EXIT SIGN AT DOOR INOP. REMOVED AND REPLACED M1670 EMERGENCY BATTERY PACK REF. B737 AMM 33-51. CHECKS GOOD. (LOG 8135796 - AIRCRAFT WAS GROUNDED).

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