ICON A5 MM : Horizontal Tail : Horizontal Tail General Maintenance : Horizontal Tail Removal and Installation : Horizontal Tail Installation
Horizontal Tail Installation
100257-01
Use these instructions to install the horizontal tail.
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
ME000368 (TAIL, HORIZ, SUBASSY)
Aircraft System and Number
09—Horizontal Tail
Safety Equipment
As Needed
Consumables
None
For the steps involved in removing the horizontal tail, Horizontal Tail Removal
Task Instructions
1. Verify that the final pitch pushrod and air rudder are not installed. The pushrod passes through the horizontal tail aft attach fitting and so it cannot be in place during horizontal tail installation.
2. Lift horizontal tail into position on top of the vertical tail and support it just above its final position with padded scaffolding, ladders, or with two helpers.
3. Connect the multi-pin wire connector and coaxial cable connectors at the vertical tail/horizontal tail joint.
Figure 197. Mult-pin Wire Connector and Coaxial Cable Connectors
4. Lower the horizontal tail into position so that the composite fitting projecting down from the horizontal tail likes flush with the vertical tail spar. Use care to avoid pinching the electrical cables; feed slack in cables through hole in top vertical tail rib.
5. In two locations on the aft vertical tail/horizontal tail joint, install an AN4CH10A drilled-head bolt with two NAS1149C0432 washers under the head. Thread the bolts into the nutplates in the vertical tail finger tight.
Figure 198. Install Bolts and Washers Under the Head
6. At the forward vertical tail/horizontal tail attach, accessed through the forward access hole on the right side of the vertical tail tip, install one AN4C10A bolt with one NAS1149C0432 washer under the head. Thread the bolt into the nutplate finger tight. The bolt threads into a nutplate.
7. Verify the assembly looks correct with no pinched cables.
8. Tighten all three attach bolts at 53 lb-in.
9. Safety wire the heads of the aft attach bolts together using MS20995C32 safety wire (reference: AC 43.13-1B).
10. Install a plug into the forward access hole on the right side of the VT tip.
Verification Method
The task is complete when the horizontal tail has been installed and secured into position. Proceed to Elevator Pushrod Installation. (Elevator Pushrod Installation)