# SDR SWAA2021090211974

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 25, 2021
- Submitted: September 2, 2021
- Operation: Air carrier
- Aircraft: [N7821L](https://openairdocs.org/aircraft/N7821L), registered now
- Make and model: Boeing 737-7CT
- Registry model: [Boeing 737-7CT](https://openairdocs.org/model/boeing-737-7ct) (OpenAirDocs)
- Aircraft serial: 32748
- Aircraft time: 58,592 hours, 29,340 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021090211974

## Discrepancy

EMERGENCY AISLE LIGHTS AT ROWS L/H 6;9&12 AND L/H 8 INOP ; EMERGENCY AISLE LIGHTS AT ROWS L/H 6;9&12 AND R/H 8 INOP / [01] PERFORMED TROUBLESHOOTING; FOUND BATTERY PACK M2335 DEFECTIVE AS PER B737 AMM 33-51-06-960-805; [02] VERIFIED STEP 1.; [03] REMOVED AND REPLACED BATTERY PACK AT POS. M2335. PERFORMED OPS CHECK; FOUND LIGHTS OPERATING NORMAL AS PER B737 AMM 33-51-06-960-805. <BR>S/N OFF: 59272<BR>S/N ON: 86946; [04] VERIFIED STEP 3

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