Service difficulty report · Hydraulic Line · Doug DC987

Difficulty date
April 25, 2008
Submitted
April 29, 2008
Operation
Air carrier
Aircraft
N754RA
Make and model
Doug DC987
Aircraft serial
49641
Aircraft time
42,328 hours, 29,277 cycles
Part
Hydraulic Line
Part number
7936907615
Condition
Leaking
Location
Hydraulic Sys
Stage of operation
IN
How discovered
O
Nature of condition
K
Precautionary procedure
K

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

What was found

CAPTAIN REPORTED LT HYDRAULIC PUMP WITH FAILURE. MAINTENANCE CHECKED THE LT SYSTEM AND DETECTED A HYDRAULIC LEAK IN THE REVERSE CONTROL VALVE LINE. THE HYDRAULIC LINE WAS REPLACED BY A FLEXIBLE LINE IAW MM 12-13-01 AND HYDRAULIC PUMP WAS REPLACED IAW MM 29-11-11, TESTED CORRECT. DURING OVERNIGHT CHECK, THE LT FLEXIBLE LINE, FILTER AND WATER SEPARATORS WERE REPLACED AND PNEUMATIC SYSTEM DUCTS WERE CLEANED, TESTED CORRECT IAW MM 29-10-05 AND 29-01-02.

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