Service difficulty report · Actuator · Boeing 737990ER

Difficulty date
November 28, 2016
Submitted
January 9, 2017
Operation
Air carrier
Aircraft
N461AS
Make and model
Boeing 737990ER
Aircraft serial
36363
Aircraft time
10,791 hours, 3,525 cycles
Engine
Cfmint CFM567B27E
Part
Actuator
Part number
1324M12P10
Part serial
APMYP444
Condition
Failed
Location
Nr 2 Vsv
Part time
12,568 hours, 4,132 cycles
Stage of operation
IN
How discovered
9
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

FOUND LONG TERM FAULT CODE 75-10392. THE NR 2 ENGINE VSV POSITION SIGNAL IS OUT OF RANGE. ACFT GROUNDED. LONG TERM FAULT 75-10392. THE VSV POSITION SIGNAL IS OUT OF RANGE. ACCOMPLISHED ALTERNATE DEACTIVATION IAW CHAPTER 5 TABLE 3 ITEM 8 FOR LEADING EDGE DEVICES & THRUST REVERSER. REMOVED AND REPLACED THE NR 2 ENGINE VSV ACTUATOR IAW AMM 75-31-01-000-802-F00 AND AMM 75-31-01-400-802-F00. REVERSED ALTERNATE DEACTIVATION OF LEADING EDGE DEVICES & THRUST REVERSER IAW CHAPTER 5 TABLE 3 ITEM 8. ACCOMPLISHED ACTUATOR INSTALLATION TESTS LISTED IN THE POWERPLANT REF TABLE TEST 3A LEAK AND OPS CHECKED GOOD.