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Zenith Aircraft Companywww.zenithair.com

STABILIZER SKIN, 7-H-4SECTION 2- Page 1 of 10

Revision 1.2 (01/31/03) 2002 Zenith Aircraft Co

The nose overhangs the edge of the workbench, to install the bottom side ofthe stabilizer skin on the skeleton.

Stabilizer skeleton shownupside down on theworkbench.

Secure the stabilizer to the table. Square the front spar and rear spar withthe ribs. Mark centerlines on all the flanges.

Note: Remove frontbrackets (7H2-6) fromfront spar for next step.

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Reference: Aft edge of the skin.

Before taking the skin outof the box determinewhich is the top andbottom side of the skin.

IMPORTANT: Top andbottom is determined bylooking at the elevatorbolted on the fuselage.

The bottom side is approximately 18mm longer than the top.

TOP= 381mmBOTTOM = 399mm

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Move the skin by lifting upalong the edge.

Handle the skin with care. Hold the skin as demonstrated to avoid the skinfrom buckling in the middle.

7H4-1 Stabilizer Skin

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Mark the aircraft centerline on the skin. Layout the rivet line for the spars andribs on the bottom side of the stabilizer. The skin overhangs 15mm past theaft edge of the spar (top and bottom).

7H4-1 Stabilizer Skin

Drill and cleco the skin to the skeleton. Start from the rear spar and worktowards the leading edge.

Photo of bottom side ofstabilizer

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Mark cutout on skin for the 7H2-7 bracket.

Carefully cut the skin leaving a 1/4" radius in the corners. Cleco bracket inplace again. Check for adequate fit.

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Debur and rivet the skin to the bottom side of the stabilizer if not alreadydone.

Turn the assembly over. Use ratchet straps to tighten skin to ribs.CAUTION: To protect the 15mm overhang of the skin (from straps), placeblocks of wood under the straps and next to the spar.

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Before drilling, make sure that there is no twist in the Stabilizer by levelingthe Stabilizer and by measuring with a level at different locations.

By starting at the leading edge, first drill, then cleco together.

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Un-cleco the skin and mark the location of the cutouts for 7H2-6. Use a #30drill-bit or metal snips to make the cutouts.

Cutouts for FrontBrackets 7H2-6

Mark the cutout on the top skin only for the upper elevator cable.

Cutout on top side onlyof stabilizer skin (to makeroom for the upper

elevator cable)

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Then cut and leave 1/4 radius in the corners.

Elevator cutout on top ofStabilizer

Cut a piece of L Angle 85mm long. Position, drill and cleco as illustrated.Note: L Angle held in place with three A4 rivets as per drawing 7-H-4.

L Angle along front ofcutout.

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7 Horiz Tail 2