09/11/2018
RANS S-21 OUTBOUND
TEXT MANUAL
147
FLAP RIGGING
NEUTRAL POSITION
(AFTER WING INSTALLATION/ AFTER SETTING OF WASHOUT)
1.
Place flap handle in flaps retracted position.
2.
Align the trailing edge of the Flap with the trailing edge of the Aileron.
NOTE:
Press lightly up on the Flap trailing edge to remove Teleflex Cable
play when setting.
3.
Adjust the female rod end on the flap cable as required for neutral flap position.
CAUTION:
Minimum thread engagement is 10 full turns.
DEFLECTIONS
4.
For deflection measurement move flap lever all the way up (fourth notch).
•
Measurement is taken on top surface of flap at approximate half span on
top of flap rib.
NOTE:
Press lightly up on the Flap trailing edge to remove
Teleflex Cable play when checking.
•
Down:
45 to 50°
(Tolerance is +2.0
/ -2.0
)
SURFACE CLEARANCE
•
The minimum clearance between surface and gap seals is 0.
060”.
•
The minimum clearance between flap and aileron is
0.2”.
OPERATIONAL CHECK
5.
Move the flap lever in the cockpit throughout the full range of deflection. Check
for:
•
Correct engagement of the roller in the grooves of the flap side plates in
each flap lever position.
•
Interference of controls, linkages, cables, surfaces with other components.
•
Excessive friction.