# SDR CALA2025101410077

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2025
- Submitted: October 14, 2025
- Operation: Air carrier
- Aircraft: [N788UA](https://openairdocs.org/aircraft/N788UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26942
- Aircraft time: 113,705 hours, 14,904 cycles
- System (JASC): [2432 · Battery/Charger System](https://openairdocs.org/jasc/2432)
- Part: Battery
- Part number: 416541
- Part serial: 90520028CBA5
- Condition: Faulty
- Location: Main
- Part time: 3,175 hours, 656 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025101410077

## Discrepancy

MAIN BATTERY EICAS STATUS MAIN BATTERY FAILURE.    UPON RETURNING TO GATE MAIN BATTERY REPLACED & INSTALLATION TESTED OK. MAIN BATTERY STATUS MX MSG CLEARED. AMM 24-31-01-000-801 & 24-31-01-400-801.

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