Service difficulty report · Coupling · Boeing 777222

Difficulty date
January 5, 2014
Submitted
January 9, 2014
Operation
Air carrier
Aircraft
N773UA
Make and model
Boeing 777222
Aircraft serial
26929
Aircraft time
74,578 hours, 13,999 cycles
Engine
Pwa PW4077
Part
Coupling
Condition
Defective
Location
Hydraulic Sys
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

RT HYD PRIMARY PUMP OVERHEAT OR RT PRIMARY PUMP OUTPUT PRESS LOW WHEN COMMANDED ON. ACCOMPLISHED FIM TASK 29- 11-867, REPLACED EDP IAW MM 29-11-05 PG 401 & FAULT STILL EXISTS. REPLACED EDP SUPPLY SELF-SEALING COUPLING IAW MM 29-11-05 & MESSAGE NOT ACTIVE & PUMP OPERATIONS NORMAL.