# SDR ASAA2023052043503

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 20, 2023
- Submitted: June 12, 2023
- Operation: Air carrier
- Aircraft: [N527AS](https://openairdocs.org/aircraft/N527AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35694
- Aircraft time: 44,625 hours, 15,643 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- Condition: Failed
- Location: Main Passenger C
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023052043503

## Discrepancy

EMERGENCY LIGHT SYSTEM BATTERY PACK (M1673) FAILED CAPACITY CHECK. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK (M1673) IAW B737-800 AMM 33-51-06-960-805. PERFORMED OPERATIONAL TEST OF THE EMERGENCY LIGHTS OPS CHECL GPPD OAW B737-800 AMM 33-51-00-710-801.

---
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.