# SDR ASAA2018110826750

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 2018
- Submitted: November 9, 2018
- Operation: Air carrier
- Aircraft: [N423AS](https://openairdocs.org/aircraft/N423AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35206
- Aircraft time: 21,895 hours, 7,232 cycles
- System (JASC): [2432 · Battery/Charger System](https://openairdocs.org/jasc/2432)
- Part: Battery
- Part number: 024147000
- Part serial: 090520004E514
- Condition: Discharged
- Location: Master
- Part time: 29,047 hours, 9,922 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018110826750

## Discrepancy

FOUND BATTERY SWITCH LEFT ON - BATTERIES ARE DISCHARGED. GROUNDED - YES. RMVD/INSTALLED FWD AND AFT MAIN BATTERIES REF B737-900 AMM 24-31-11. SYS CKS NML.

---
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.