Service difficulty report · Actuator · Boeing 737890

Difficulty date
December 17, 2018
Submitted
January 29, 2019
Operation
Air carrier
Aircraft
N529AS
Make and model
Boeing 737890
Aircraft serial
35198
Aircraft time
33,878 hours, 10,189 cycles
Part
Actuator
Part number
1211313010
Part serial
VL819
Condition
Faulty
Location
Nr 2 Engine
Part time
9,259 hours, 2,637 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 ENG 2 LONG TIME FAULT MSG 75-10392 THE VSV POSITION SIGNAL IS OUT OF RANGE. GROUNDED - YES. FAULT ON ENGINE NR 2 FOUND AND CONFIRMED ON LEGS 1-4 AND 6-10. EEC TEST SHOWS NO ACTIVE FAULTS. VSV ACTUATOR RESISTANCE AND WIRING CHECKS WITHIN TOLERANCES REF FIM 75-31 TASK 803. REMOVED AND REPLACED NR 2 ENG RT VSV REF AMM 75-31-01-000-802-F00/75-31-01-400-802-F00. VSV ACTUATOR LEAK TEST PASSED NO LEAKS NOTED. REF AMM 75-31-01-790-801-F00. ACCOMPLISHED TEST 3A, 12 & BITE C/K. NO FAULTS OR LEAKS NOTED.