Tecnam P92 Echo Super - 4.4.1 Stabilator Balance Check; 4.5 Vertical Tail Structure

P92 Echo Super
Maintenance Manual
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Figure 4-7 Stabilator
control
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4.4.1 Stabilator balance
If it becomes necessary to verify stabilator balance (repairs etc.) proceed as follows:
Remove the tail fairing and open the inspection hatch located on the bottom of the tailcone (the one closest to
tail -end);
Disconnect the moving surface from its control rod. To avoid interference with the free rotation of the tailplane, temporarily
secure control rod to the stabilator support assembly;
Disconnect the trim-tab control rod;
Secure trim-tab to stabilator to avoid any relative movement. Use adhesive tape to avoid any influence on balance;
Check for excessive friction or lock-ups in the moving parts;
The stabilator is balanced when the application of an 800 grams / ~ 28.21 ounces weight at point (1) in figure above brings
stabilator to horizontal position.
If the stabilator should result “trailing-edge-heavy” it is necessary to add a few small weights to the leading edge near the
root.
A slight imbalance towards the leading edge is acceptable as it is deemed conservative with respect to stability.
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4.5 Vertical Tail
The vertical tail consists of an all-metal light alloy structure (fig. 4-8). Vertical stabilizer tip is composite with cut-outs for
navigation and strobe light.
The vertical stabilizer consists of a twin spar with wrap-around stressed skin paneling. An attachment plate (1) secures the
stabilizer
‟ s front spar to the penultimate tailcone frame while the rear spar is extended to attach directly onto the last
tailcone ordinate (2).
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Revision Date:
10-29-2007
Revision Number:
3.01