A-29 Super Tucano 60TP 1.1 2022
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IMPORTANT: It is recommended to apply water-based thermal protection paint with ceramic microspheres to
prevent overheating of the nose cowling and turbine mount, especially the upper cowling. 3 coats of paint
applied by brush with 30 minutes between each coat are required for adequate protection. A layer of thermal
insulating fabric based on ceramic fiber and a layer of aluminum foil can also be added on the outside with the
shiny part facing the turbine for greater thermal protection of the upper cowling, which is exposed to higher
temperatures for longer periods.
Above: inner part of the upper cowling painted with thermal protection paint and application of a ceramic
fiber fabric (left) and a layer of aluminum foil on the outside (right).
The engine cowling is provided in 2 parts (upper and lower). The parts have perfect fittings among themselves
and in the fuselage, providing the correct alignment according to the center between the fixing holes of the
turbine mount and the firewall angles. Using the back plate of the spinner (4
¾”
) positioned on the prop washer
of the turbine, position the lower part of the engine cowling in such a way as to center the spinner back plate
with the circumference formed by the cowling, leaving spacing of 1 to 2mm between the spinner back plate and
the cowling so that they do not touch in any position.
To fix the cowling to the fuselage, apply epoxy glue to 4 10mm hardwood cubes and glue them to the inside
of the fuselage, in order to make a solid fixing point where the fixing screws will be inserted. Do the same at the
fixing points at the bottom of the cowling or use screws with self-locking nuts to ensure fastening even with
high levels of vibration. With the correct alignment of the set, permanently screw the cowling parts together
and to the fuselage using washers to increase the contact area with the cowling parts avoiding damage and
cracks due to vibration. The screws to be inserted in the wooden cubes must be locked with a drop of medium
CA glue or epoxy to reinforce the lock and ensure greater resistance. The horizontal and vertical inclination of
the spinner backplate and the front part of the cowling must be equal, parallel and centralized.
Above: upper cowling alignment with propwasher and exhausts holes.
