Service difficulty report · Controller · Boeing 7879

Difficulty date
May 31, 2026
Submitted
June 4, 2026
Operation
Air carrier
Aircraft
N24988
Make and model
Boeing 7879
Aircraft serial
37449
Aircraft time
8,117 hours, 790 cycles
Part
Controller
Part number
7000045H04
Part serial
8773
Condition
Faulted
Location
Hyd Pump
Part time
8,112 hours, 789 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

HYD PUMP C1 MESSAGE IS A COLLECTOR FOR THE FOLLOWING CONDITIONS: PUMP PRESSURE IS NOT WITHIN LIMITS OR CASE TEMPERATURE IS EXCESSIVELY HIGH OR ONE OF TWO 28VDC MOTOR CONTROL POWER CIRCUIT BREAKERS ARE OPEN .MESSAGE IS LATCHED FOR OVERHEAT AND PRESSURE LIMIT FAULTS. DB 29 HYDIF OPS (LEFT) FLAP AND SLAT SECONDARY MODE AS WELL AS MAIN LANDING GEAR PRIORITY VALVE VERIFIED TO BE OPERATING NORMALLY.

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