# SDR DALA2021111506984

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 11, 2021
- Submitted: November 15, 2021
- Operation: Air carrier
- Aircraft: [N721TW](https://openairdocs.org/aircraft/N721TW), registered now
- Make and model: Boeing 757231
- Aircraft serial: 29954
- Aircraft time: 79,984 hours, 20,784 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: None
- Condition: None
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2021111506984

## Discrepancy

SHIP 6810 FOUND FIRST CLASS EMERGENCY LIGHTS INOP. CORRECTIVE ACTION: REPLACED BATTERY PACK PER B757 AMM 33-51. OPS CK GOOD. (8407515)

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