# SDR CALA2023051701523

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2023
- Submitted: May 17, 2023
- Operation: Air carrier
- Aircraft: [N780UA](https://openairdocs.org/aircraft/N780UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26944
- Aircraft time: 96,528 hours, 17,207 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: ADD71701100
- Condition: No Test
- Location: R4 M33409
- 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/CALA2023051701523

## Discrepancy

B777-33-3-7019 DR R4 EMER LIGHT BATTERY M33409 TEST FAIL.  DR R4 EMER LIGHT BATTERY M33409 REPLACED AND TESTED NORMAL AS PER AMM 33-51-06.

---
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.