# SDR CALA2026051516299

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2026
- Submitted: May 18, 2026
- Operation: Air carrier
- Aircraft: [N224UA](https://openairdocs.org/aircraft/N224UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30225
- Aircraft time: 92,853 hours, 10,800 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: No Test
- Location: Zone 200
- 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/CALA2026051516299

## Discrepancy

DURING ACCOMPLIMENT OF CONFORMITY CHECK, SOME EMERGENCY LIGHTS DOES NOT WORK PROPERLY. PERFORMED POWER SUPPLY BATTERY PACK CAPACITY CHECK IAW AMM 33-51-06-200-801 AND THE BATTERIES HAVE BEEN RE-CHARGED FOR 90 MINUTES. DURING RETEST, IT WAS VERIFIED BATTERIES OF DOORS 1L AND 4L ILUMINATES AND SUDDENLY GOING OFF LESS THAN 2 MINUTES. PERFORMED POWER SUPPLY BATTERY PACK CAPACITY CHECK IIAW  AMM 33-51-06-200-801 AND THE BATTERIES HAVE BEEN RE-CHARGED FOR 90 MINUTES. DURING RETEST, IT WAS VERIFIED BATTERIES OF DOORS 1L AND 4L ILUMINATES AND SUDDENLY GOING OFF LESS THAN 2 MINUTES. IT WAS PERFORMED THE TROUBLESHOOTING IN REF WDM: 33-51-34-1 AND 33-51-61-4 AND WERE FOUND THE BATTERY PACKS M33424, M33093 AND M33407 DO NOT KEEPING THE CHAGER. THE BATTERY PACKS M33424 AND M33093 WAS REPLACED IN REF AMM: 33-51-06-960-802. AWAITING ADD EMP:U411929 REPLACEMENT OF M33407. THE BATTERY PACK OF M33407 WAS REPLACED IN REF AMM: 33-51-06-960-802. SYSTEM OKAY.

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