Does the frame get wet?

[stroutmail]

Curious whether a cub with floats gets wet enough that frame under covering should be checked for rust more often?

10 year old cub with rust?

[Mark Keneston]

Curious whether a cub with floats gets wet enough that frame under covering should be checked for rust more often?

10 year old cub with rust?

All tube and fabric aircraft should be checked or rust corrosion. Moisture accumulates and more if it lives outside, more still if its on floats. Just do a thorough inspection or find a knowledgeable party to do it. Does it have seaplane drain grommets in the wings, tail and fuselage belly? It should. Thanks Mark

[Helenawe]

The steel tube members of an aircraft equipped with floats should be given par*ticularly close ~xamination.

It is possible for water to enter the interior of these members, allowing rust to form on the inside of the tubes while the exterior appears to be in good condi*tion. The best way to check for this condition is to have small holes strategically drilled in the tubing.

If water is present, it will run from the holes. It is sometimes desirable to have small pieces cut from critical tube mem*bers in order to obtain positive knowledge of the condition of the tube interiors.