SDR CALA2026031814652

Service difficulty report · Battery Pack · Boeing 777300ER

Difficulty date: March 17, 2026
Submitted: March 18, 2026
Operation: Air carrier
Aircraft: N2243U
Make and model: Boeing 777300ER
Aircraft serial: 63723
Aircraft time: 37,461 hours, 4,068 cycles
System (JASC): 3350 · Emergency Lighting
Part: Battery Pack
Part number: D71701100
Condition: Inoperative
Location: Zone 200
Stage of operation: IN
How discovered: C
Nature of condition: L
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

THE EMERGENCY LIGHT BATTERY PACK DEEP CYCLE CHECK FOUND BATTERY LOW ON THE DOOR 3R POWER SUPPLY M33304 REFER HAECO NON-ROUTINE 9451831. REPLACED BATTERY PACK ON THE DOOR 3R POWER SUPPLY M33304, THEN PERFORMED INSTALLATION TEST, THE RESULT WAS NORMAL IAW AMM 33-51-06-960-802, REV 106. BATTERY PACK INOP M33304 R & R OPS CHECKED GOOD.

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