ICON A5 MM : Flight Controls : Roll Trim Tab : Inspection Instructions : Determine Roll Trim Tab Length
Determine Roll Trim Tab Length
100122-00
Use these instructions to determine the roll trim tab length required for straight and level flight.
Applicable Aircraft Serial Numbers
All
Type of Maintenance
Line
Level of Certification
LSA-RM
Task Specific Training Required
No
Special Tools Required
None
Parts Required
None
Aircraft System and Number
06—Flight Controls
Safety Equipment
As Needed
Consumables
None
Task Instructions
1. Remove the existing roll trim tab from the aircraft (if installed).(Remove Roll Trim Tab)
2. Verify that there is no water in either wing tip. Load the aircraft to the condition most used for flying.
3. In trimmed level flight at 75 KIAS and with skid ball centered, release the control stick and measure the time it takes for the aircraft to roll to 10° and to 20°. Also note the direction of the roll (left or right).
4. Use the table as a guide to find the length of tab required.
Verification Method
Note: 
There should be only one roll trim tab on the aircraft. Roll tabs longer than 12 inches are not approved. If aircraft behavior indicates that a longer tab is needed, contact ICON Aircraft for support as this may be an indication of some other problem.
Trim Tab Length (in)
Time to Roll 10° (sec)
Time to Roll 20° (sec)
0
∞
∞
2
21
36
4
8
14
6
6
10
8
4
7
10
3
6
12
<3
5