Service difficulty report · Bypass Valve · Boeing 727222

Difficulty date
January 1, 2000
Submitted
October 4, 2000
Operation
Air carrier
Aircraft
N7288U
Make and model
Boeing 727222
Aircraft serial
21566
Aircraft time
61,113 hours, 34,723 cycles
Engine
Pwa JT8D15
Part
Bypass Valve
Part number
AV13J5100
Condition
Leaking
Location
Elevator
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

HYDRAULIC SYSTEM A PRESSURE AND QUANTITY ZERO. ENGINES 1 AND 3 PUMPS LIGHTS ON APPROXIMATELY 5 MINUTES AFTER ELEVATOR FEEL DIFFERENTIAL PRESSURE LIGHT ON. CONTINUED TO DESTINATION. *S/D* FOUND ELEVATOR HYDRAULIC BYPASS VALVE ASSEMBLY DAMAGED AND LEAKING. REPLACED MODULE. OPERATIONAL AND LEAK CHECKED NORMAL.