Service difficulty report · Hydromech Unit · Boeing 737890

Difficulty date
June 23, 2008
Submitted
July 2, 2008
Operation
Air carrier
Aircraft
N584AS
Make and model
Boeing 737890
Aircraft serial
35682
Aircraft time
3,436 hours, 1,027 cycles
Engine
Ge CFM56*
Engine time
3,436 hours, 1,027 cycles
Part
Hydromech Unit
Part number
1853M56P12
Part serial
BECW5661
Condition
Faulty
Location
Nr 2 Engine
Part time
3,436 hours, 1,027 cycles
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
L

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

What was found

ENG NR 2 SHORT TERM FAULT MSG NO. FAULT CODE NR 73 20342. THE FMV POSITION SIGNAL OUT OF RANGE. PERFORMED TEST 12 ACTUATORS TEST CONFIRMED FAULT. VERIFIED ROTABLE COMPONENT MFG NR 442369 S/N NR 3219 REF IPC 73 21 10 01 ITEM 25T. REPLACED HMU REF MM 73 21 10 400 801 FOO AND 000 801 F00. OPS AND LEAK CHECK GOOD.