Service difficulty report · Hydraulic System · Boeing 7377H4

Difficulty date
September 16, 2023
Submitted
September 20, 2023
Operation
Air carrier
Aircraft
N959WN
Make and model
Boeing 7377H4
Aircraft serial
36674
Aircraft time
39,256 hours, 24,015 cycles
Part
Hydraulic System
Part number
UNKNOWN
Condition
Low
Location
Zn 100 Fus Lower
Stage of operation
UK
How discovered
9
Nature of condition
O
Precautionary procedure
K

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

What was found

OTS - B HYDRO LOW PSI AND LOW QUAN - ATB_<UPON FURTHER INSPECTION FOUND B SYSTEM RUDDER PRESSURE TUBE ASSY LEAKING REMOVED AND REPLACED B SYSTEM PRESSURE TUBE ASSY PER AMM 20-50-11. REPLACED GARLOCK SEAL ON #2 ENGINE EDP._ED; OVERWEIGHT LEAK AT THE TAIL AREA

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