Service difficulty report · Actuator · Boeing 737990ER

Difficulty date
July 17, 2022
Submitted
July 22, 2022
Operation
Air carrier
Aircraft
N428AS
Make and model
Boeing 737990ER
Aircraft serial
36353
Aircraft time
23,349 hours, 7,309 cycles
Engine
Cfmint CFM567B27E
Part
Actuator
Part number
7074300
Part serial
YU021579E
Condition
Faulty
Location
#2 Engine
Part time
66,564 hours, 28,114 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

WHILE PERFORMING T/C 78273000 FOUND FAULT 75-30452 SHORT TERM FAULT VBV POSITION SIGNAL DISAGREE ON ENG #2. GROUNDED - YES. REMOVED AND REPLACED #2 ENG VBV ACTUATOR REF B737-900 AMM 75-32-02 LEAK AND OPS CHECK GOOD.