Service difficulty report · Fcu · Boeing 737890

Difficulty date
December 23, 2013
Submitted
December 30, 2013
Operation
Air carrier
Aircraft
N529AS
Make and model
Boeing 737890
Aircraft serial
35198
Aircraft time
14,752 hours, 4,493 cycles
Part
Fcu
Part number
4419215
Part serial
CUC16634
Condition
Leaking
Location
Apu
Part time
4,051 hours, 6,690 cycles
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

APU OIL CONSUMPTION RATE CALCULATED AT .29 QPH THIS IS AN UNSATISFACTORY CONSUMPTION RANGE IAW AMM 49-11-00-710-802. ACFT GROUNDED. WITH APU RUNNING FOR 10 MINUTES, FOUND OIL LEAK, APPROX 20 DROPS IAW MINUTE AT THE WITNESS PORT, COMING FROM THE FUEL CONTROL/LUBE MODULE, REF FIM TASK 49-90-00-810-813. R & R APU FUEL CONTROL UNIT AS REQUIRED. RAN APU, LEAK CHECKED GOOD. NO OIL LEAKS NOTED WHILE RUNNING OR AFTER SHUTDOWN.