SDR IPXA2026042739189

Service difficulty report · Battery Pack · Boeing 7478F

Difficulty date: April 23, 2026
Submitted: April 29, 2026
Operation: Air carrier
Aircraft: N610UP
Make and model: Boeing 7478F
Aircraft serial: 64256
Aircraft time: 30,134 hours, 4,439 cycles
System (JASC): 3350 · Emergency Lighting
Part: Battery Pack
Part number: 20131A
Part serial: 499543
Condition: Inoperative
Location: Zone 200
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, L1533, L5733, L5767 AND EXIT SIGN M4915 INOP. I.A.W AMM 33-51-04-900-803 REV.50 AND SSM 33-51-01 REV.31 REPLACED THE BATTERY PACK AT EMERGENCY LIGHT POWER SUPPLY M5169, AND PERFORMED THE POWER SUPPLY TEST, RESULT WAS SATISFACTORY.

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