Service difficulty report · Actuator · Boeing 737890

Difficulty date
August 19, 2018
Submitted
August 23, 2018
Operation
Air carrier
Aircraft
N589AS
Make and model
Boeing 737890
Aircraft serial
35686
Aircraft time
41,049 hours, 12,398 cycles
Part
Actuator
Part number
1226400
Part serial
YU023709Y
Condition
Failed
Location
Nr 2 Vbv
Part time
46,361 hours, 19,060 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 ACCOMPLISHING T/C 78273000 FOUND FAULT #75-30452 "THE VBV POSITION SIGNALS DISAGREE", ON THE #2 ENG, THIS WAS A SHORT TERM FAULT. GROUNDED - YES. FOUND FAULT 75-10452 LOGGED ON LEGS 3 AND 9, FAULT 75-20452 LOGGED ON LEG 3. REF B737-800 FIM 75-32 TASK 803 EEC BITE TEST PASSED. NO EEC INTERNAL FAULTS LOGGED. ALL VBV ACTUATOR RESISTANCE CHECK FOR CHANNEL A & B ON STEP G(5) IS WITHIN LIMITS. REMOVED & REPLACED THE L/H VBV REF B737-800 AMM 75-32-02. ACCOMPLISHED LEAK & OPS TEST REF. AMM 71-00-00, TESTS OK, NO FAULTS NOTED.