Service difficulty report · Control Unit · Boeing 7572Q8

Difficulty date
January 1, 2009
Submitted
January 16, 2009
Operation
Air carrier
Aircraft
N707TW
Make and model
Boeing 7572Q8
Aircraft serial
27625
Aircraft time
38,797 hours, 13,800 cycles
Part
Control Unit
Condition
Malfunctioned
Location
Hyd Pump
Component
Pump
Component part number
291702503
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
D

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

What was found

RIGHT ELECTRIC HYD PUMP. CIRCUIT BREAKER POPPED. CLEANED AND RESEATED CONNECTOR RAN ELEC HYD PUMPS. ACTUATED ALL CONTROL SURFACES AND DROPPED FLAPS ALSO DEPLOYED SPEEDBRAKES L-ALL AT THE SAME TIME. C/B DID NOT POP- PUMP IND ALL NORMAL. REMOVED AND REPLACED M10005 ELEC HYD PUMP RIGHT ELCU ACTUATED ALL CONTROL SURFACES. C/B DID NOT POP RAN RIGHT PUMP 15 MIN ALL IND NORMAL.

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