Service difficulty report · Pump · Boeing 7377H4

Difficulty date
July 3, 2026
Submitted
July 6, 2026
Operation
Air carrier
Aircraft
N437WN
Make and model
Boeing 7377H4
Aircraft serial
29832
Aircraft time
76,024 hours, 45,346 cycles
Part
Pump
Condition
Pressure Loss
Location
Zone 400
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

DURING CLIMB; A-HYD. PRESSURE ELECT PUMP OVERHEAT (LIGHT ILLUM.); A-HYD. PRESS. OVER 3400 (PSI) FOUND EDP A WILL NOT PRESSURIZE DURING ENGINE OPERATION. R & R EDP IAW AMM 29-11-11. R & R EDP PRESS HOSE, NO LEAKS NOTED.

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