09/11/2018
RANS S-21 OUTBOUND
TEXT MANUAL
151
SURFACE CLEARANCE
•
The minimum clearance between elevator and horizontal stabilizer is
0
.060” all the way along the hinge line.
•
The minimum clearance between the elevator balance horn and the
hori
zontal stabilizer tip is 3/16”.
STATIC BALANCE
7.
Elevator must be 100% static balanced in reference to the hinge line.
OPERATIONAL CHECK
8.
Move the controls in the cockpit throughout the full range of deflection. Check for:
•
Correct deflections of control surfaces.
•
Interference of controls, linkages, surfaces with other components.
•
Excessive friction.
ELEVATOR TRIM TAB
1.
The elevator trim tab is operated by an electric servo.
2.
In neutral position, the trim tab aligns with the trailing edge of the elevator.
DEFLECTIONS
3.
Measure deflection on top of trim tab at push rod attach.
•
Up:
26°
(Tolerance is +3.0
/ -3.0
)
•
Down:
20°
(Tolerance is +3.0
/ -3.0
)
SURFACE CLEARANCE
4.
The minimum gap between trim tab and elevator is 0
.060” all the way.
INDICATOR POSITION
5.
Verify neutral position of trim position indicator at neutral trim tab.