Service difficulty report · Hydraulic Line · Boeing 75724APF

Difficulty date
November 20, 1997
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N408UP
Make and model
Boeing 75724APF
Aircraft serial
23730
Part
Hydraulic Line
Part number
3508807
Condition
Failed
Location
Lt Mlg
Stage of operation
AP
Nature of condition
K, J
Precautionary procedure
O

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

What was found

INSPECTION TYPE-N/A, LT HYD QTY DECREASED TO .18, EDP DEPRESSURIZED AND ELECTRIC PUMP OFF. QUANTITY CONTINUED TO DECREASE TO ZERO. ALL GEAR GREEN ON LIGHTS FAILED TO ILLUMINATE WITH GEAR HANDLE DOWN, EICAS MESSAGE, GEAR DISAGREE DISPLAYED. DOORS AMBER LIGHT WAS EXTINGUISHED AFTER ALT GEAR EXTENSION. REMOVED AND REPLACED (ILLEG) LINE ON LEFT DOWN LOCK ACTUATOR RETURN. RAN HYD SYSTEM AND CYCLED GEAR HANDLE PER M/M 32-32-02, LEAK CK GOOD.

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