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Reaction ARF Directive - Flight control seams

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Reaction ARF Directive - Flight control seams

Old 03-23-2009, 03:43 AM
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Default Reaction ARF Directive - Flight control seams

Subject: PST Composite Reaction ARF, Model airplane directive

One of the factory flown reaction exhibited a portion of the bottom of the elevator skin breaking off when flown aggressively. As a result, we would like all the owners of the RARF to inspect "ALL" the flying surfaces and perform the following:

Gently deflect the control surface (elevator, rudder, aileron, flap) and run a thin line of quality medium CA along the NON hinged line. This is where the composite skin contacts the wood, and let the glue run along the length of the joint. DO NOT use kicker, it will weaken the glue and generate unneeded heat. Make sure the glue is fully dried and check again for smooth deflection and proper glue flow. Perform this procedure to all the control surfaces.

You can also use high quality epoxy resin or Hysol for this task.

Although we have not seen any problems at the wings or tail group, we recommend that you do the same thing at the flying surface side where the skin contacts the wood on the wing aileron, wing flap, fin and stab area. Please see attached pictures.

Thanks and regards,
Kraivuth S.
PST Jets Thailand
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