SDR ASAA2023022242609

Service difficulty report · Battery Pack · Boeing 737890

Difficulty date: February 22, 2023
Submitted: March 29, 2023
Operation: Air carrier
Aircraft: N587AS
Make and model: Boeing 737890
Aircraft serial: 35684
Aircraft time: 54,488 hours, 15,876 cycles
System (JASC): 3350 · Emergency Lighting
Part: Battery Pack
Part number: ADD71701100
Condition: Failed
Location: Main Cabin
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

EMERGENCY LIGHT SYSTEM BATTERY PACK FAILED CAPACITY CHECK FOR BATTERIES M1670, M1671, M1672, M1673. GROUNDED - YES. REPLACED BATTERY PACKS M1670, M1671, M1672 AND M1673 IAW ASA B737NG MM 33-51-06-960-805, OP CHECK GOOD ASA B737NG MM 33-51-06-960-805.