Service difficulty report · Pump · Boeing 747409F

Difficulty date
May 30, 2014
Submitted
June 3, 2014
Operation
Air carrier
Aircraft
N18721
Make and model
Boeing 747409F
Aircraft serial
33738
Aircraft time
38,647 hours, 7,023 cycles
Part
Pump
Part number
4205401
Part serial
K0860
Condition
Leaking
Location
Nr 2 Engine
Part time
48,557 hours, 8,920 cycles
Stage of operation
CR
How discovered
O
Nature of condition
K, J
Precautionary procedure
K

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

What was found

HYD 2 QTY LOW HYD QTY DROP TO 0.34 & CONTINUED TO DROP TO 0 BUT PRESS 3080 TEMP 50, 1.5 HRS LATER HYD PRESS ENG 2 MSG CAME ON, TURN OFF EDP, 1 HR 20 MINS BEFORE LD HYD PRESS SYS 2 MSG ON HYD PRESS READ 0. GND CHK FOUND LT WW WING GEAR LCCA SOLENOID VLV & ENG 2 EDP LEAKING. REPLACED SOLENOID VLV PACKING PLATE PN 69-20184-1 & ENG 2 EDP PN 4205401, SN K0860. IAW AMM 29-11-00 PFM OVHT INSP NML. REPLACED CASE DRAIN FILTERS & CHK NO METAL & CHIPS. PRESS HYD SYS 2 & DRY MONITORING ENG 2 NO LEAK FND. PFM SYS FLUSH NML.