ESTRUCTURAS COMPUESTAS 1er 30%

If registration numbers are to be applied to an aircraft with a letter height of 12 inches, what is the minimum space required for the registration mark N1683C? Note: 2/3 x height = character width. 1/6 x height = width for 1. 1/4 x 2/3 height = spacing. 1/6 x height = stroke or line width. 52 inches. 48 inches. 57 inches.

If masking tape is applied to an aircraft such as for trim spraying, and is left on for several days and/or exposed to heat, it is likely that the tape will. not seal out the finishing if the delay or heating occurs before spraying. be wakened in its ability to adhere to the surface. cure to the finish and be very difficult to remove.

What is used to slow the drying time of some finishes and to prevent blush?. Reducer. Retarder. Rejuvenator.

Which type of coating typically includes phosphoric acid as one of its components at the time of application?. wash primer. Epoxy primer. Zinc chromate primer.

Which properly applied finish topcoat is the most durable and chemical resistant?. synthetic enamel. acrylic lacquer. polyurethane.

Aluminum-pigment in dope is used primarily to. reflect ultraviolet from the fabric. aid in sealing out moisture from the fabric. prvide a silver color.

A correct use for acetone is to. thin zinc chromate primer. remove grease from fabric. thin dope.

Which of the following is a hazard associated with sanding on fabric covered surfaces during the finishing process?. overheating of the fabric/finish especially with the use of power tools. static electricity buildup. embedding of particles in the finish.

What is likely to occur if unhydrated wash primer is applied to unpainted aluminum and then about 30 to 40 minutes later a finish topcoat, when the humidity is low?. Corrosion. A glossy, blush free finish. a dull finish due to the topcoat sinking in to primer that is still to soft.

Fungicidal dopes are used in aircraft finishing as the. firts full-bodied brushed-on coat to prevent fungus damage. firts coat to prevent fabric rotting and are applied thin enough to saturate the fabric. final full bodied brushed on coat to reduce blushing.

Before applying a protective coating to any unpainted clean aluminum, you should. wipe the surface with av gas or kerosene. remove any conversion coating film. avoid touching the surface with bare hands.

What is likely to occur if hydrated wash primer is applied to unpainted aluminum and then about 30 to 40 minutes later a finish topcoat, when the humidity is low?. corrosion. a glossy blush-free finish. a dull finish dues to the topcoat sking in to primer that still is to soft.

What is the usual cause of runs and sags in aircraft finishes?. too much material applied in one coat. material is being applied too fast. low atmospheric humidity.

Which defect in aircraft finishes may be caused by adverse humidity, drafts, or sudden changes in temperature?. orange peel. blushing. pinholes.

Which statement is true regarding paint system compatibility?. Old-type zinc chromate primer may not be used directly for touchup or bare metal surfaces. acrylic nitrocelluloce lacquers may be used over old nitro celluloce finishes. old wash primer coats may be overcoated directly with epoxy finishes.

Paint strippers remove ________ by swelling the film and causing itto pull away from the primer. enamel. lacquer.

Paint strippers remove acrylic lacquer by _________ the film. softening. swelling.

The wax left on a surface after paint stripper has been used __________ be removed with lacquer thinner. can. can not.

The finish may be dry-stripped from an aircraft surface by blasting it with ___________. plastic beads. blasting wash.

Corrosion that occurs in the form of thread-like deposits under a paint film is called ________ corrosion. filiform. grannular.

70. If intergranular corrosion is suspected, the area should be inspected with a/an __________ or _________ instrument. eddy currents, ultrasonic test. NDT,s, ultra-violet test.

Acrylic lacquers should be applied in ____________. one heavy coat. several light coats.

Synthetic enamels __________ be applied over zinc chromate primer. may. may not.

Synthetic enamel should dry for at least _________ hours before it is taped for the trimcoats. 48. 24.

Polyurethane enamels should be applied over a/an __________ primer. epoxy. wash.

It is best if polyurethane enamel is allowed to dry for __________ hours before it is tapedfor the trim coats. 24. 48.

The fill coats of dope ___________ completely fill the weave of cotton fabric. should. should not.

The aluminum-pigmented dope _________ used primarily to provide a smooth surface for the finish coats of dope. is. is not.

For the richest colors in a doped finish, all of the surfaces should be undercoated with ________ dope. white. green.

A doped surface is more likely to blush when the relative humidity is __________ . low. high.

A draft of air across the surface of freshly applied dope will cause ___________. pinholes. fisheyes.

A surface resembling the peel of an orange may be caused by the thinner in the dope evaporating too ________. fast. slow.

Fisheyes can be prevented by scrubbing the surface to be sprayed with a rag damp with ________ or __________. toluol, MEK. MEK, Alodyne.

A topcoat of nitrate dope ________ bond to butyrate fill coats. will. will not.

Rejuvenation _________ restore strength to weakened fabric. does. does not.

The shape of the spray pattern produced by a paint spray gun is determined by the amount of air flowing through the ___________ holes. wing port. pin.

The exhaust fan in a spray booth should be ____________. near the floor. or high up on the wall.

To get the proper thickness of paint film, the spray gun should be held between _____ and ____ inches from the surface being sprayed. 6,10. 2, 4.

Each pass of the spray gun should overlap all but about _______ or ______ inches of the previous pass. Two,Three. Two, Four.

The correct shape for the spray pattern of a paint gun is a/an ____________. ellipse. ball.

A dumbbell-shaped spray pattern is caused by too _________ atomizing air pressure. much. little.

A paint spray gun __________ be cleaned by soaking the entire gun in a container of thinner. should. should not.

The registration numbers of an aircraft certificated in the United States must be preceded by the letter ______. N. K.

The minimum height of a registration number on a fixed-wing aircraft must be ________ inches. 12. 8.

A ball-point pen a good instrument to use when laying out registration numbers on a doped fuselage. is. is not.

The masking tape used to lay out the registration numbers __________ be removed as soon as the finish is no longer tacky to the touch. should. should not.