SDR SWAA2022122083650

Service difficulty report · Power Supply · Boeing 7377H4

Difficulty date: December 17, 2022
Submitted: December 20, 2022
Operation: Air carrier
Aircraft: N211WN
Make and model: Boeing 7377H4
Aircraft serial: 34163
Aircraft time: 58,988 hours, 35,116 cycles
System (JASC): 3350 · Emergency Lighting
Part: Power Supply
Condition: Inoperative
Location: Emergency Lights
Stage of operation: IN
How discovered: 9
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

SEVERAL EMERGENCY LIGHTS INOP THROUGH CABIN AREA. REMOVED AND REPLACED THE BATTERY PACKS M1674, M1675, M1668, M1669, M1670, M1672, AND M1673 IAW AMM REF 33-51-06-960-805. REMOVED AND REPLACED POWER SUPPLIES M1674 AND M1675 IAW AMM 33-51-06-960-806. PERFORMED EMERGENCY LIGHT OPERATIONAL TEST IAW AMM 33-51-00-710-801. TESTED NORMAL.

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