# SDR CALA2020030700604

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2020
- Submitted: March 7, 2020
- Operation: Air carrier
- Aircraft: [N774UA](https://openairdocs.org/aircraft/N774UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26936
- Aircraft time: 94,564 hours, 17,277 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: M33400
- Condition: Failed
- Location: Cabin
- 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/CALA2020030700604

## Discrepancy

B777-33-3-7019 DOOR 3 LH EMER POWER SUPPLY (M33400) TEST FAIL DURING TEST, REF NRC 9130195 DOOR 3 LH EMER PWR SUPPLY (M33400) BATTERY PACK REPLACED AND TESTED NORMAL 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.