Service difficulty report · Line · Boeing 747422

Difficulty date
February 7, 2004
Submitted
February 24, 2004
Operation
Air carrier
Aircraft
N128UA
Make and model
Boeing 747422
Aircraft serial
30023
Aircraft time
14,317 hours, 1,841 cycles
Engine
Pwa PW4056
Part
Line
Part number
2724200103
Condition
Chafed
Location
Hydraulic System
Stage of operation
NR
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

FLT HAS HAD NR 1 QTY INDICATION LOSS WITH PSBL HYD PRESS LOSS. AMBER ALERT DECLARED. LOSS OF FLUID DUE TO LANDING GEAR DOWN HYDRAULIC LINE PIN HOLE LEAK. PIN HOLE CAUSED BY CHAFING DUE TO BROKEN CLAMP BACC10CC-8 LOCATED AT STA 900. ACCOMPLISHED RYNGLOK REPAIR AT STA 900 AND RECLAMPED.