Service difficulty report · Pump · Boeing 757222

Difficulty date
October 3, 2012
Submitted
October 31, 2012
Operation
Air carrier
Aircraft
N557UA
Make and model
Boeing 757222
Aircraft serial
26653
Aircraft time
71,846 hours, 21,228 cycles
Engine
Pwa PW2037
Part
Pump
Part number
731966
Part serial
202
Condition
Leaking
Location
Hydraulic Sys
Stage of operation
IN
How discovered
V
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

FOUND RIGHT ELECTRICAL HYDROLIC PUMP WAS LEAKING AT THE DRAIN HOLE. OPERATION CHECKED AND RUN HYDRAULIC SYSTEM. FOUND 37 DROPS PER MINUTE CAME OUT OF DRAIN HOLE. PER MM IT IS OVER THE LIMIT UNDER THE MAINTENANCE INTERVAL OF LAYOVER OR "A" CHECK. REPLACED RT ELEC HYD PUMP.