SDR ASAA2024041249041

Service difficulty report · Battery Pack · Boeing 737890

Difficulty date: April 12, 2024
Submitted: April 15, 2024
Operation: Air carrier
Aircraft: N532AS
Make and model: Boeing 737890
Aircraft serial: 36346
Aircraft time: 49,559 hours, 14,761 cycles
System (JASC): 3350 · Emergency Lighting
Part: Battery Pack
Part number: D71702001
Condition: No Test
Location: Emergency Lights
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

WHILE PERFORMING T/C 78233001 FOUND EMERGENCY BATTERY PACK M1670, M1671,M1673,M1695 AND M1694 TO HAVE FAILED CAPACITY CHECK. GROUNDED - YES. REPLACED EMERGENCY BATTERY PACKS M1670, M1671, M1695 & M1694. BATTERY PACK CAPACITY CHECKED & ALL PACKS PASSED REF AMM 33-51-06/201.