Service difficulty report · Control Unit · Boeing 7878

Difficulty date
July 24, 2026
Submitted
July 27, 2026
Operation
Air carrier
Aircraft
N885BP
Make and model
Boeing 7878
Aircraft serial
66005
Aircraft time
14,457 hours, 1,856 cycles
Part
Control Unit
Condition
Failed
Location
Zone 200
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 WAS GROUNDED: FOUND EMERGENCY LIGHT AT ROWS 25DEH AND 26DEH INOPERATIVE. (EPL). MAINT MSG 33-11729. FOUND WCU 29 BAD. MAINTENANCE REPLACED WELS CONTROL UNIT 29.

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