Aircraft Sealants: Types and Identification SM3

Why are aircraft sealants used in aircraft construction and maintenance?

What distinguishes two-part sealants from one-part sealants?

In a two-part sealant system, what is the specific role of Part A?

Why is it important to mix two-part sealants according to the manufacturer's specified ratios?

What mixing method is generally preferred for two-part aircraft sealants, according to best practices?

According to the classification system described, what property primarily defines the 'Class' of an aircraft sealant?

How does a 'Class A' sealant differ in application from a 'Class B' sealant?

What is the typical application method for a Class B sealant?

What specific characteristic makes Class B sealants suitable for application on vertical surfaces?

For what type of application is a 'Class C' sealant most often specified?

What is 'working life' in the context of applying aircraft sealants?

How does increasing the ambient temperature typically affect the working time of an aircraft sealant?

What is the recommended method for cleaning surfaces prior to applying aircraft sealant?

Which of the following steps is crucial to avoid contaminating surfaces after they have been cleaned with a solvent during sealant application?

What visual indicator confirms that a two-part sealant has been properly mixed?

What action should be taken if the sealant mixture exhibits white or black streaks?

Why is it important to avoid vigorous mixing when using a machine to mix aircraft sealants?

What adjustment should be made to the sealant application process when working in an environment with increased ambient temperature?

In the context of sealant application, what is a 'fillet'?

Why is it important to apply a small dab of sealant to the shop head of each rivet?

What should be done with excess sealant that oozes out of a joint after riveting?

According to the information provided, what are the primary functions of aircraft sealants?

What does the term 'tack time' refer to regarding sealant application?

What is the meaning of 'cure time' in the context of sealant application?

When applying sealant, what is meant by 'fay surface sealing'?

Based on the provided information, which of the following is NOT a recognized application for aircraft sealants?

If the ambient temperature is significantly lower than the specified working temperature, how should application practices be adjusted?

What characteristic defines sealants classified as 'RV'?

What quality indicates when a sealant batch affected by white or black streaks should be discarded?

Sealant 700 is related to what sealant type?

Where should the excess sealant be spread after it oozes out from the joints?

Why is it important for the surfaces to be cleaned from dirt and grease if they are to be applied with sealant?

How does temperature affect the working time of the sealant?

What ratio parts of A vs parts of B should sealant be mixed in?

What primary function differentiates sealants used for fuel tanks from those used for fuselage sealing?

If the standard mixing ratio for a two-part sealant is 10 parts A to 100 parts B by weight, what adjustment, if any, needs to be made if mixing by volume instead?

How would increasing the ambient temperature from 77°F to 97°F likely affect the working time of a sealant, and what practical step should be taken?

What is the correct method for cleaning surfaces before sealant application, and why is each step important?

Proper sealant mixing of parts A and B is essential. Prior to combining the parts, what crucial step ensures optimal curing and performance of the sealant?

What does the term 'working life' refer to when discussing sealant application, and how does it influence application practices?

Which sealant application technique is used, and why, to seal the edges and corners of assembled components, ensuring no gaps or voids remain?

What is the purpose of applying a small dab of sealant to the shop head of each rivet, and why is this step important?

Why is it important to avoid vigorous mixing when using a machine to mix two-part aircraft sealants, and what is a likely consequence of doing so?

When applying sealant, what distinguishes 'fay surface sealing' from other methods, and where is it typically applied?

What should be done with excess sealant that oozes out of a joint after riveting, and why is this step necessary?

Compared to sealants designed for other applications, what specialized characteristic do fuel tank sealants possess?

In sealant application, what is the meaning of 'tack time', and why is it important to consider?

What distinguishes one-part sealants from two-part sealants in terms of preparation for application?

What role does Part A play in a two-part sealant system?

What is the main reason for mixing two-part sealants according to the ratios specified by the manufacturer?

What mixing method is generally recommended for two-part aircraft sealants and why?

According to the classification system, what property primarily defines the 'Class' of an aircraft sealant?

What application method is generally used for Class B sealants, given their viscosity characteristics?

What unique characteristic makes Class B sealants well-suited for application on vertical surfaces?

For what specific type of application is a 'Class C' sealant most often specified?

What does 'cure time' mean in the context of sealant application, and why is it important to consider?

Why is it important to apply all sealants to surfaces cleaned from dirt, grease, and other contaminents?

Why is the family/ type important when choosing a sealant?

In order to seal a section of the fuselage together, what family/type of sealant should be used?

To help ensure against corrosion in aircraft components, what family/ type should be used?

What is the correct order for a rivet surface to be sealed?

After cleaning a surface with an approved solvent, why is it crucial to avoid touching the cleaned area with bare hands before applying sealant?

In the context of sealant classifications, what does 'RV' typically designate?

If no uniform color is observed after mixing, what can be said about the mix?

What are the signs of an improperly mixed sealant

What should you do with sealant if it becomes improperly mixed?