Service difficulty report · Hmu · Boeing 737890

Difficulty date
September 24, 2015
Submitted
September 28, 2015
Operation
Air carrier
Aircraft
N562AS
Make and model
Boeing 737890
Aircraft serial
35091
Aircraft time
34,912 hours, 10,442 cycles
Engine
Cfmint CFM567B26US
Part
Hmu
Part number
442369
Part serial
BECW0246
Condition
Leaking
Location
Nr 1 Engine
Part time
46,769 hours, 18,660 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

FUEL LEAK NR 1 ENGINE ON START FOR REV FLIGHT. ACFT GROUNDED. INIT GV, FOUND LEAK COMING FROM FUEL/OIL HEAT EXCHANGER MOUNT PAD ON TOP OF FUEL PUMP HMU UNIT. INSTALLED NR 1 ENGINE FUEL PUMP PACKAGE IAW MM 73-11-01-400-801-F00, OPS CHECK AND LEAK GOOD. COMPLETED NR 1 ENGINE HMU REMOVAL AND REPLACEMENT IAW T/C'S N8473000, N8473001.