Service difficulty report · Pump · Boeing 747422

Difficulty date
August 27, 2010
Submitted
August 27, 2010
Operation
Air carrier
Aircraft
N177UA
Make and model
Boeing 747422
Aircraft serial
24384
Aircraft time
83,870 hours, 10,299 cycles
Engine
Pwa PW4056
Part
Pump
Condition
Low Pressure
Location
Fuel System
Stage of operation
NR
How discovered
9
Nature of condition
J
Precautionary procedure
O

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

What was found

'FUEL OVRD CTR R' EICAS STATUS MESSAGE DISPLAYED. LOW FUEL PUMP OUTPUT PRESSURE CTR TANK RT AND PUMP SWITCHED ON WITH FUEL IN TANK GREATER THAN 4000 LBS. HAD CMC MSG 28656. T-S FIM 28-31 TASK 827. OPS CHECKED, PUMP OPS OK. NO FAULTS NOTED, NO HISTORY. CIRCUIT BREAKER OK.