Service difficulty report · Hydraulic System · Boeing 7879

Difficulty date
July 6, 2022
Submitted
July 6, 2022
Operation
Air carrier
Aircraft
N24973
Make and model
Boeing 7879
Aircraft serial
40941
Aircraft time
20,534 hours, 1,963 cycles
Part
Hydraulic System
Part number
NA
Condition
Failed
Location
Hyd Press C1
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

HYD PRESS C1 ADVISORY THE MESSAGE IS DISPLAYED WHEN ONE OF THE FOLLOWING CONDITION EXISTS:1.) PUMP IS SELECTED TO OFF AND PUMP PRESSURE IS LOW.2.) PUMP IS COMMANDED TO RUN AND PUMP PRESSURE IS LOW.THIS MESSAGE IS INHIBITED WHEN THE SYSTEM PRESSURE IS LOW OR THE PUMP HAS BEEN L AHM UPDATE: {24-41041} *LEFT-1 230VAC/115VAC-TO-540VDC ATRU PROTECTION IS ON* REF FIM DMC-B787-A-24-20-F2-M8A-421A-A TO RESET CONTACTOR AND CONFIRM/ISOLATE FAULT. ADD FAULT: 24-41041 FAULT RELATED TO MSG 24-41041...L1 ATRUC CK2435501 TRIPPED. RESET PER FIM 24-20-F2-M8A-421A. NO PREVIOUS HISTORY.

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