Service difficulty report · Flow Divider · Boeing 757222

Difficulty date
March 31, 2011
Submitted
April 11, 2011
Operation
Air carrier
Aircraft
N544UA
Make and model
Boeing 757222
Aircraft serial
25322
Aircraft time
73,062 hours, 21,041 cycles
Engine
Pwa PW2037
Part
Flow Divider
Part number
38825503
Part serial
20
Condition
Leaking
Location
Apu Fuel
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

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

What was found

FUEL LEAKING FROM APU DRAIN MAST. FOUND DRAIN FOR FUEL FLOW DIVIDER LEAKING ONLY WHEN APU NOT RUNNING AT 10 DROPS EVERY 14 SECONDS. LIMIT FOR STATIC LEAK ON THIS DRAIN IS 1 DROP PER SECOND. APU OK FOR SERVICE TO NEXT MAINT OP FOR FLOW DIVIDER CHANGE. REPLACED FUEL FLOW DIVIDER VALVE PER MM. OPS CHECK AND LEAK CHECK ACCOMPLISHED.