SDR ASAA2024042649287

Service difficulty report · Battery Pack · Boeing 737990ER

Difficulty date: April 26, 2024
Submitted: April 29, 2024
Operation: Air carrier
Aircraft: N453AS
Make and model: Boeing 737990ER
Aircraft serial: 36354
Aircraft time: 38,429 hours, 12,069 cycles
System (JASC): 3350 · Emergency Lighting
Part: Battery Pack
Part number: D71702001
Condition: Failed
Location: Emergency Lights
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

WHILE PERFORMING T/C 778233001, FOUND BATTERY PACKS FOR EMERGENCY LIGHTS REQUIRE REPLACEMENT IN: FWD ENTRY (2), MID CABIN (4), AND AFT ENTRY (1). GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHTS BATTERY PACKS, 2 IN FWD ENTRY, 4 IN MID CABIN, 1 IN AFT ENTRY, OPS NORMAL, REF AMM 33-51-06.