# SDR ASAA2024061750350

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 17, 2024
- Submitted: June 18, 2024
- Operation: Air carrier
- Aircraft: [N548AS](https://openairdocs.org/aircraft/N548AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 30020
- Aircraft time: 62,457 hours, 22,174 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71702001
- Condition: No Test
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2024061750350

## Discrepancy

WHILE ACCOMPLISHING T/C 78233001 FOUND BATTERY PACKS FOR L1, L2, AFT LEFT, AFT RIGHT, AND RH EMERGENCY EXIT ROWS FAILED. GROUNDED - YES. VERIFIED EMERGENCY LIGHTS ASSOCIATED TO EMERGENCY BATTERY POWER SUPPLY M1670, M1672, M1673, M1694, M1695, M1674, M1675 AND M1671 FAILS BATTERY PACK CAPACITY FUNCTIONAL CHECK. REMOVED AND REPLACED M1670, M1672, M1673, M1694, AND M1695 BATTERY PACK AND POWER SUPPLY. REF AMM 33-51-06. REMOVED AND REPLACED M1674, M1675 AND M1671 REF AMM 33-51-06. OPS CHECK GOOD.

---
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.