Service difficulty report · Pump · Lkheed 10113851

Difficulty date
February 25, 1999
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N733DS
Make and model
Lkheed 10113851
Aircraft serial
193C1224
Engine
Rroyce RB21122B02
Part
Pump
Part number
RB21122B02
Condition
Bypassing
Location
Nr 1 Engine
Part time
47,343 hours
Stage of operation
CL
Nature of condition
K, J
Precautionary procedure
A

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

What was found

EXCESSIVE OIL CONSUMPTION, NR 1 ENGINE BEGAN FLT WITH FULL OIL QTY. AT TOP OF CLIMB, NR 1 ENG QTY WAS 15 QTS. CONSUMED 2.5 QTS IN THE NEXT 1 HR 15 MIN, INDICATED AS LOW AS 9 QTS AFTER 3.5 HRS OF FLT. REPLACED SCAVENGE/LUBE PUMP ASSEMBLY. RAN ENGINE, OPS AND LEAK CHECK GOOD.