Service difficulty report · Hydraulic System · Boeing 7378

Difficulty date
May 2, 2026
Submitted
May 4, 2026
Operation
Air carrier
Aircraft
N37365
Make and model
Boeing 7378
Aircraft serial
67630
Aircraft time
4,251 hours, 1,405 cycles
Part
Hydraulic System
Condition
Leaking
Location
Zone 600
Stage of operation
CR
How discovered
O
Nature of condition
K, J
Precautionary procedure
A

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

What was found

HYDRAULIC SYSTEM FLUID POOLING ON RIGHT WING BEHIND FLAP TRACK S HROUD . A SYS QTY 60 PERCENT. HYD RESERVOIR SYS A & B QTY WITHIN LIMITS. PERFORMED FIM TASK 28-10 TASK 808 HYD SYST EXTERNAL LEAKAGE CHECK AND FLUID LEVELS FOUND SYSA AT 87 AND SYS. B AT 93 BOTH WITHIN LIMITS ,SERVICED TO OPERATING LIMITS AS PER AMM 12-12-00-610-801 ONLY AS REFERENCE DE ICING LIQUID FOUND ON FLAP FAIRING NUMBER 2 PREVIOUS EVIDENCE OF DE ICING PROCEDURE LOOK FOR EVIDENCE OF HYD LEAKS NIL LEAK WAS FOUND. FOUND HYD RESERVOIRS WITHIN LIMITS RAN ENG 1 AND ENG 2 DURING FIVE MINUTES NO FOUND ANY EVIDENCE OF HYD LEAKS, PARAMETERS WITHIN LIMITS A/C OK TO CONTINUE.

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