SDR IPXA2026042739224

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: 499542
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 L5732, L1853 AND L1854 INOP. IAW AMM 33-51-04-900-803 REV.50 AND SSM 33-51-01 REV.31 REPLACED THE BATTERY PACK AGAIN AT EMERGENCY LIGHT POWER SUPPLY M5170, AND PERFORMED THE POWER SUPPLY TEST, RESULT WAS SATISFACTORY.

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