Service difficulty report · Pump · Boeing 73779P

Difficulty date
March 10, 2026
Submitted
March 11, 2026
Operation
Air carrier
Aircraft
N7861J
Make and model
Boeing 73779P
Aircraft serial
33008
Aircraft time
56,841 hours, 38,203 cycles
Part
Pump
Part number
5718610
Part serial
571863629
Condition
Inoperative
Location
Hyd System
Stage of operation
CR
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

LOSS OF HYDRAULIC B SYSTEM, NO OVERWEIGHT LANDING. REMOVED AND INSTALLED DUE TO HYDRAULIC LOSS, B ELECTRIC PUMP, B SYSTEM HYD FILTER, & TRAILING EDGE FLAP FLOW TRANSMITTER.

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