Van's Aircraft RV 12iS, Production Acceptance Procedures

Page: 9 / 50

Revision: 2.3 Date: 10/30/20
G2-1
Section G2 – Flight Controls Check
FLIGHT CONTROLS:

Remove empennage fairing.

Verify that top stabilator cable is attached and safetied.

Verify that bottom stabilator cable is attached and safetied.

Verify that both rudder cables are attached and safetied.

Verify that the trim motor tray is attached and safetied.

Verify that at both rudder hinge points (upper and lower), the bolt/nut/washers are properly
installed as specified in KAI Section 11iS-02.

Verify that at both stabilator hinge points (right and left), the bolt/washers are properly
installed as specified in KAI Section 11iS-03.

Move the stick full aft and hold firmly against the stop.

Verify that the stabilator is in the trailing edge up position.

Vary the amount of force on the stick and verify that the stick can move slightly off its stop
before the stabilator begins to move.

Move the stick full forward and hold firmly against the stop.

Verify that the stabilator is in the trailing edge down position.

Vary the amount of force on the stick and verify that the stick can move slightly off its stop
before the stabilator begins to move.

Hold the stick full right while moving from full forward to full aft.

Verify smooth movement of the stabilator with no binding and little or no friction.

Hold the stick full left while moving from full forward to full aft.

Verify smooth movement of the stabilator with no binding and little or no friction.

Turn the master switch “ON” and actuate “NOSE UP” side
of trim switch until the motor reaches the stop.
NOTE: this will take several switch flips due to
software preventing “runaway trim”

Move the stabilator to the full trailing edge (T.E.) up
position and measure the tab position.

Distance from center of AST (Anti-Servo Tab) T.E. at one
outboard tip to the center of adjacent stabilator T.E:
(nominal distance: 9/16 inch [14.29mm]) See
Figure 3.

Standing alongside the stabilator, move stabilator from full-up to full-down and check for
binding/interference of the anti-servo tab and actuating mechanism.

Move the stabilator to the full trailing edge up position and hold it there.

Verify that there is at least 1/4 inch [6.3mm] clearance between the bottom of the rudder and
the AST pushrod. Reference KAI 11iS-09.

Actuate “NOSE DOWN” side of trim switch until limit is reached.
Move the stabilator to the full trailing edge down position and measure the tab position.

Distance from center of AST T.E. to center of stabilator T.E: (nominal
distance: 3/8 inch [9.5mm]) See Figure 3.
Anti-servo tab
Stabilator
FIGURE 3: AST TAB
MEASUREMENT