Service difficulty report · Valve · Boeing 7673CB

Difficulty date
October 28, 2018
Submitted
November 6, 2018
Operation
Air carrier
Aircraft
N594HA
Make and model
Boeing 7673CB
Aircraft serial
23275
Aircraft time
95,081 hours, 36,521 cycles
Part
Valve
Part number
274605
Part serial
05060
Condition
Leaking
Location
Anti-Skid
Part time
69 hours, 14 cycles
Stage of operation
CR
How discovered
O
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

RIGHT HYD SYSTEM LEAK. FULL ON DEPARTURE. 3 HOURS INTO FLT RF(.67) STILL DECREASE NOTE: CENTER HYD QUAN. 1.35, 1.11 ON DEPARTURE.// PERFORMED FIM TASK 29-11 FAULT TREE 830 THROUGH STEP 2 INSPECTION OF CENTER RESERVOIR PRESS SHUT OFF VALVE FOUND CLEAN. NEED TO CONTINUE. ACCOMPLISHED FIM TASK 29-11 FAULT TREE 830 STEP 10 FOUND RIGHT ANTI-SKID SHUTTLE VALVE MODULE LEAKING DURING HIGH PRESSURE TEST. REMOVED AND REPLACED RIGHT ANTI-SKID SHUTTLE VALVE MODULE PER AMM 32-42-07. OPS AND LEAK CHECK GOOD. OK FOR SERVICE.

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