Service difficulty report · Control Unit · Boeing 7879

Difficulty date
July 13, 2025
Submitted
July 14, 2025
Operation
Air carrier
Aircraft
N833AA
Make and model
Boeing 7879
Aircraft serial
40645
Aircraft time
30,580 hours, 3,659 cycles
Part
Control Unit
Condition
Faulted
Location
Zone 100
Stage of operation
CL
How discovered
O
Nature of condition
B
Precautionary procedure
O

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

What was found

AIRCRAFT WAS GROUNDED: AFTER PUSH BACK CABIN CREW REPORTED STRONG ELECTRICAL TYPE ODOR, FROM FORWARD GALLEY VENTS. A SHORT TIME LATER ODOR CAME THROUGH COCKPIT VENTS. MAINTENANCE REPLACED COOLING SYSTEM COMPRESSOR MOTOR CONTROL.

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