# SDR SWAA2021090297685

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 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/SWAA2021090297685

## Discrepancy

PER CUSTOMER REQUEST ROB BATTERY PACK FROM POWER SUPPLY M1675 FOR A/C 7820 ; / [01] REMOVED EMERGENCY LIGHT BATTERY PACK FROM POWER SUPPLY M1675.PER B737 AMM 33-51-06.; [02] VERIFIED STEP 1; [03] INSTALLED BATT. PACK ON POWER SUPPLY M1675; PER REF. AMM<BR>33-51-06-960-805 STEP D(4); [04] PERFORMED OPS CHECK; FOUND LIGHTS CONNECTED TO BATTERY PACK OPERATING NORMAL AS PER B737 AMM 33-51-06-960-805; [05] PERFORMED OPS CHECK; FOUND LIGHTS CONNECTED TO BATTERY PACK OPERATING NORMAL AS PER B737 AMM 33-51-06-960-805; [06] VERIFIED STEPS 3; 4 AND 5

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.