SDR ASAA2025111062228

Service difficulty report · Battery Pack · Boeing 737990ER

Difficulty date: November 10, 2025
Submitted: November 13, 2025
Operation: Air carrier
Aircraft: N273AK
Make and model: Boeing 737990ER
Aircraft serial: 61554
Aircraft time: 29,427 hours, 9,521 cycles
System (JASC): 3350 · Emergency Lighting
Part: Battery Pack
Part number: ADD71701100
Condition: No Test
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

DURING TASK CARD 78233001, BATTERY PACKS M1675, M1670, M1671, M1672, M1673, M1695, M1694, FAILED, AND CHARGER M2626 FAILED. GROUNDED - YES. REPLACED BATTERY PACKS M1675, M1670, M1671, M1672, M1673, M1695, M1694, AND CHARGER M2626 WITH BATTERY. REF AMM 33-51-06/201. OPS CHECK GOOD.