Service difficulty report · Actuator · Boeing 737890

Difficulty date
October 21, 2019
Submitted
November 19, 2019
Operation
Air carrier
Aircraft
N594AS
Make and model
Boeing 737890
Aircraft serial
35191
Aircraft time
44,058 hours, 13,189 cycles
Engine
Cfmint CFM567B27B3
Part
Actuator
Part number
1211313010
Part serial
VN825
Condition
Failed
Location
Nr 2 Vsv
Part time
11,117 hours, 3,200 cycles
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

#2 ENGINE EEC BITE SHOWS LONG TIME FAULT 75-10392 "THE VSV POSITION SIGNAL IS OUT OF RANGE" LOGGED FOR ALL TEN STARTS IN EEC MEMORY. GROUNDED - YES. REMOVED RIGHT VSV ACTUATOR @ #2 ENGINE PER AMM 75-31-01. INSTALLED NEW RH VSV ACTUATOR @ #2 ENG PER AMM 75-31-01-400-802-F00 PAR G STEPS A-F(4). COMPLETED INSTALLATION OF RIGHT VSV ACTUATOR REF AMM 75-31-01-400-802-F00 STEPS F(5)-(9). ALT DEACTIVATION PROCEDURES REVERSED. PERFORMED TEST 3A IDLE POWER LEAK CHECK, TEST 12 ACTUATOR TEST & TEST 5 POWER ASSURANCE CHECK PER TASK 71-00-00-000-811-F00.