Service difficulty report · O-Ring · Boeing 76733A

Difficulty date
June 27, 2016
Submitted
June 28, 2016
Operation
Air carrier
Aircraft
N580HA
Make and model
Boeing 76733A
Aircraft serial
28140
Aircraft time
53,162 hours, 9,734 cycles
Part
O-Ring
Condition
Damaged
Location
Hydraulic Sys
Stage of operation
CR
How discovered
O
Nature of condition
K
Precautionary procedure
A

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

What was found

AIR DIVERSION, RT HYD QUANTITY INDICATOR, INDICATED DECREASING TO .78 TURNED RT ENGINE PUMP, ELEC PUMP OFF, DECREASING QUANTITY STOPPED. ON ARRIVAL, FOUND QTY AT 0.98, SERVICED SYS TO 1.09. LEAK CHECKED RUDDER & ELEVATOR PCA'S, DEPLOYED SPOILERS, OPERATED FLAPS. NO LEAKS NOTED. FOUND LEAK AT TAIL MAINTENANCE SHUTOFF VALVE. IN AFT TAIL ACCY COMPARTMENT FURTHER T/S FOUND LINE LOOSE AND O-RING DAMAGED. REPLACED O-RING. OPS AND LEAK CHECK GOOD. OPERATED RT PUMP FOR 80 MIN QTY START 1.07 AFTER 80 MIN QTY 1.07. OK FOR FURTHER SERVICE.

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