SDR UIEA2020101302247

Service difficulty report · Battery · Boeing 74745E

Difficulty date: October 9, 2020
Submitted: October 13, 2020
Operation: Air carrier
Aircraft: N473MC
Make and model: Boeing 74745E
Aircraft serial: 27174
Aircraft time: 106,066 hours, 18,959 cycles
System (JASC): 3350 · Emergency Lighting
Part: Battery
Part number: 20131A
Part serial: 121756
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

FOUND EMERGENCY LIGHT BATTERY FUNCTION FAIL, IAW AMM 33-51-04-902-001-001 REV 98. REPLACE EMERGENCY LIGHT BATTERY (M5055) AND CONDITION CHECK NORMAL, IAW SMM 33-51-04-902-001-001 REV 98. PERFORM TEST OF NEW BATTERY, THE RESULT WAS SATISFACTORY.

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