SDR AALA202011139010

Service difficulty report · Control Unit · Boeing 7878

Difficulty date: November 12, 2020
Submitted: November 13, 2020
Operation: Air carrier
Aircraft: N811AB
Make and model: Boeing 7878
Aircraft serial: 40629
Aircraft time: 19,076 hours, 2,352 cycles
System (JASC): 3350 · Emergency Lighting
Part: Control Unit
Part number: 100260103
Part serial: 1158384
Condition: Inoperative
Location: Emergency Lights
Stage of operation: IN
How discovered: C
Nature of condition: L
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AIRCRAFT IN BASE MAINTENANCE. INOPERATIVE EMERGENCY PATH LIGHTING AT SEAT ROWS 13 THRU 18. REPLACED WELS CONTROL UNIT, IAW AMM 33-51-07. OPERATIONS CHECK GOOD. ALSO REPLACED THREE WELS BATTERY UNITS (AALA202011139014, AALA202011139015, AALA202011139016), IAW AMM 33-51-07. OPERATIONS CHECK GOOD.

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