Service difficulty report · Packing · Boeing 7378

Difficulty date
May 3, 2023
Submitted
May 3, 2023
Operation
Air carrier
Aircraft
N11206
Make and model
Boeing 7378
Aircraft serial
30578
Aircraft time
71,109 hours, 25,882 cycles
Part
Packing
Part number
NA
Condition
Leaking
Location
A/P Elev Act
Stage of operation
CR
How discovered
V
Nature of condition
O
Precautionary procedure
A

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

What was found

HYDRAULIC FLUID QUANTITY INDICATION SHOWS RF (76%) SYSTEM A SYS A HYD SLOWLY DECREASES APPROX 1 PCT DECREASED TO30 PCT. LEAKING FROM REDUCER ON AUTOPILOT ELEVATOR ACTUATOR. LEAK OBSERVED FROM LEFT ELEVATOR PCU AT THIS TIME. DISCONNECTED HYDRAULIC PRESSURE LINE FROM AUTOPILOT ELEVATOR, REPLACED PACKING TO REDUCER WITH NEW AND HYDRAULIC SYSTEM A SERVICED. ACTUATOR AND REMOVED REDUCER FITTING. FOUND DEGRADED PACKING ON . CONNECTED HYDRAULIC LINES TO AUTOPILOT ELEVATOR REDUCER. ACTUATOR. RAN HYDRAULICS AND CHECKED FOR LEAKS. NO LEAKS OBSERVED AT THIS TIME. LEFT ELEVATOR PCU VISUALLY INSPECTED, LEAK WAS COMING FROM A PACKING ON THE AUTOPILOT ELEVATOR ACTUATOR. PACKING REPLACED LEAK CHECK IS GOOD

More about the Boeing 737-8