ATE 208 - Aircraft Structures 4 (painting & stuff)
When dope-proofing the parts of the aircraft structure that come in contact with doped fabric, which of the following provide an acceptable protective coating? 1. Aluminum foil. 2. Resin impregnated cloth tape. 3. Any one-part type metal primer. 4. Cellulose tape.
1&4
Fabric rejuvenator is used to A) restore the condition of dope coatings B) restore fabric strength and tautness to at least the minimum acceptable level C) penetrate the fabric and restore fungicidal resistance
A) restore the condition of dope coatings
The breathe-cool II is an example of a A) supplied air respirator system B) self contained particulate filter C) forced air filter system D) none of the above
A) supplied air respirator system
What is the maximum allowable grain slope in aviation grade wood? A) 1:4 B) 1:15 C) 1:1 D) 1:25
B) 1:15
How many days should paint be used after mixing has been accomplished on a paint shaker? A) 30 B) 5 C) 2 D) 1
B) 5
When testing the strength of Grade A cotton fabric covering an aircraft that requires only intermediate grade, the minimum acceptable strength the fabric must have is A) 70% of its original strength B) 70% of the original strength for intermediate fabric C) 56 lbs/in warp and fill
B) 70% of the original strength for intermediate fabric
Paint gun spitting is often caused by A) the type of gun B) air being drawn in- too little material in the cup C) over pressure of the gun D) a faulty regulator
B) air being drawn in- too little material in the cup
MSDS sheets can be provided to workers A) only during safety training exercises B) any time in normal work hours C) upon written request to osha D) none of the above
B) any time in normal work hours
Polyester fabric is made taute over the airframe by A) stretching it as far as possible before the cement dries B) applying heat C) applying aluminum pigmented nitrocellulose dope D) applying butyrate dope
B) applying heat
Which defect in aircraft finishes may be caused by adverse humidity, drafts, or sudden changes in temperature? A) orange peel B) blushing C) pinholes
B) blushing
Which of the following types of adhesive are considered obsolete and not recommended for aircraft use? A) epoxy B) casein C) resorcinol D) phenol-formaldehyde
B) casein
Any wooden member that has been overstressed is subject to which type of failure? A) stretch B) compression C) torsion
B) compression
Fungicide and mildewicide additives are important for fabric covered aircraft, such as A) cotton and Dacron B) cotton and linen C) glass and linen
B) cotton and linen
Aluminum-pigment in dope is used primarily to A) provide a metallic like finish to the surface B) exclude sunlight from the fabric C) waterproof the fabric D) strengthen the fabric
B) exclude sunlight from the fabric
Fungicidal dopes are used in aircraft finishing as the A) first, full-bodied, brushed-on coat to prevent fungus damage B) first coat to prevent fabric rotting and are applied thin enough to saturate the fabric C) final, full-bodied, brushed-on coat to reduce blushing
B) first coat to prevent fabric rotting and are applied thin enough to saturate the fabric
All currently STC approved aircraft fabric coverings are either polyester or A) nylon B) glass filament C) Irish linen D) grade A cotton
B) glass filament
The strength of a well-designed and properly prepared wood splice joint is provided by the A) bearing surface of the wood fibers B) glue C) reinforcement plates
B) glue
Laminated wood spars may be substituted for solid rectangular wood spars A) only in certain instances where the primary load is shared by one or more other original structural member B) if the same quality wood is used in both C) only upon specific approval by the manufacturer or the FAA
B) if the same quality wood is used in both
Which of the following are approved by the FAA for fabric strength testing? A) maule punch testing B) elcometer 496 C) D-5035 pull test D) seyboth punch tester
C) D-5035 pull test
Fabric re-covering of an aircraft is considered to be A) a major alteration B) a major repair only if the fabric used is different from the original type C) a major repair D) a routine maintenance action
C) a major repair
In cases of elongated boltholes in a wood spar or cracks in the vicinity of boltholes, A) it is permissible to ream the hole, plug with hardwood, and redrill B) the spar may be reinforced by using hardwood reinforcing plates C) a new section of spar should be spliced in or the spar replaced entirely
C) a new section of spar should be spliced in or the spar replaced entirely
The HVLP production spray gun is A) not suitable for aircraft use B) cost prohibitive in most applications C) an internal mix gun D) an external supply gun
C) an internal mix gun
Compression failures in wood aircraft structures are characterized by buckling of the fibers that appear as streaks on the surface A) at right angles to the growth wings B) parallel to the grain C) at right angles to the grain
C) at right angles to the grain
Before applying a protective coating to any unpainted clean aluminum, you should A) wipe the surface with MEK B) remove any contaminants from the surface with a paper towel C) avoid touching the surface with bare hands
C) avoid touching the surface with bare hands
What is the most common wood used for manufacturing propellers? A) oak B) balsa C) birch D) maple
C) birch
MSDS can be obtained: A) by mailing in written request for use B) by asking the company's safety officer C) by looking on the materials container D) none of the above
C) by looking on the materials container
A faint line running across the grain of a wood spar generally indicates A) delamination B) shear failure C) compression failure D) decay
C) compression failure
Regarding the lacing requirements for attaching the fabric covering to the wing ribs, the slipstream area is A) not a factor B) considered to be area behind the diameter of the propeller C) the area of all the leading edges D) considered to be the area behind the diameter of the propeller plus one additional rib on each side
D) considered to be the area behind the diameter of the propeller plus one additional rib on each side
How many fabric thicknesses will be found in a French-fell seam? A) one B) two C) three D) four
D) four
The top choice for paint for aircraft applications is A) epoxy paints B) synthetic enamel C) urethane coatings D) polyurethane
D) polyurethane
A method of sawing logs in which the largest number of boards retain annular ring angles of 45 degrees or more is: A) staffer cut B) leg sawn C) diamond cut D) quarter sawn
D) quarter sawn
Pin knot clusters are permitted in wood aircraft structure provided A) they are not in stressed members such as main spars B) they have no mineral streaks C) no pitch pockets are within 12 inches D) they produce a small effect on grain direction
D) they produce a small effect on grain direction
What is the purpose of finishing tape? A) it is used on sharp protrusions, metal seams and rib caps to prevent abrasion damage B) to provide additional anti-tear resistance under reinforced tape C) to help prevent ripple formation in covering fabric D) to provide additional wear resistance over fabric forming structures
D) to provide additional wear resistance over fabric forming structures
Sags and runs result from A) too little material B) too fast a spray pattern C) proper application techniques D) too much material applied in one coat
D) too much material applied in one coat
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 A) not seal out the finishing material if the delay or heating occurs before spraying B) be weakened in its ability to adhere to the surface C) cure to the finish and be very difficult to remove
C) cure to the finish and be very difficult to remove
When and how is finishing tape applied on a fabric-covered aircraft? A) sewed or laced on before dope is applied B) doped on immediately prior to the finish coat C) doped on after the first or second coat of dope
C) doped on after the first or second coat of dope
The air delivered by a compressor should be A) oiled, water free and 50 cfm B) oil free, water free and at least 10 cfm C) filtered, water free, oil free and at least 10 cfm D) filtered, water trap free, oiled and at least 10 cfm
C) filtered, water free, oil free and at least 10 cfm
How many fabric thicknesses will be found in a French-fell seam? A) five B) three C) four
C) four
Which statement is true regarding paint system compatibility? A) old-type zinc chromate primer may not be used directly for touchup of bare metal surfaces B) acrylic nitrocellulose lacquers may be used over old nitrocellulose finishes C) old wash primer coats may be overcoated directly with epoxy finishes
C) old wash primer coats may be over coated
When gluing wood members together, the joint area should be prepared by: A) sealing the surfaces with a varnish to ensure a non-porous surface for bonding B) sanding with fine grain paper to ensure bonding C) planning or scraping to true the surface D) sanding with coarse grade paper to ensure bonding
C) planning or scraping to true the surface
Which properly applied finish topcoat is the most durable and chemical resistant? A) synthetic enamel B) acrylic lacquer C) polyurethane
C) polyurethane
The I-beam wooden spar is routed to A) increase strength B) obtain uniform strength C) reduce weight
C) reduce weight
Aluminum-pigment in dope is used primarily to A) provide a silver color B) aid in sealing out moisture from the fabric C) reflect ultraviolet from the fabric
C) reflect ultraviolet from the fabric
What is the most satisfactory method of making an end joint between solid wood members? A) step joint B) butt joint C) scarf joint D) lap joint
C) scarf joint
The best method to repair an L shaped tear in fabric (each leg 14" long) is to A) re-cover entire bay which tear is located B) sew a baseball stitch from the end of each leg toward the center and then dope on a patch C) sew a baseball stitch from the center of the tear out toward the extremities and then dope on a patch D) apply finishing tape and then dope on a patch
C) sew a baseball stitch from the center of the tear out toward the extremities and then dope on a patch
Fungus growth in wood typically requires a moisture content of at least A) 50% B) 10% C) 80% D) 20%
D) 20%
Masking for aircraft finishing should be accomplished with A) scotch tape B) 3m tapes C) any masking tape is approved D) 3M fine line tape
D) 3M fine line tape
Aircraft fabric covering is allowed to deteriorate to A) a minimum of 45 lbs per inch B) 85% of its original strength before it must be replaced C) a point where an inspection light can shine through one thickness of material D) 70% of its original strength before it must be replaced
D) 70% of its original strength before it must be replaced
What is the reference wood for aircraft structures? A) white pine B) western hemlock C) yellow poplar D) Sitka spruce
D) Sitka spruce
MSDS sheets provide information concerning A) health concerns to users B) how flammable a material is C) how to clean up spills of the material D) all of the above
D) all of the above
Problems that may occur during the use of a respirator include A) difficulty breathing B) incorrect wear, thus false trust C) facial hair causes leaking D) all of the above
D) all of the above
What is used to dope-proof aircraft structure that contacts doped fabric? A) resin impregnated cloth tape B) any organic type protective coating C) phenolic tape D) aluminum foil or cellulose tape
D) aluminum foil or cellulose tape
The purple color code for respirators is A) carbon monoxide B) argon C) oil sprays D) any particulate
D) any particulare
What are the two basic methods used for re-covering an aircraft with fabric? A) panel and tube B) roll and tuck C) shrink and stretch D) blanket and envelope
D) blanket and envelope
Paint thickness can be measured A) with a micrometer B) by a calculation based on viscosity C) by electronic means D) by electronic or magnetic means
D) by electronic or magnetic means (elcometer)
What ATA chapter should be referred to regarding re-covering a Stearman PT-17 aircraft? A) 51 B) 20 C) 12 D) 37
A) 51
Where is information found concerning acceptable species substitutions for wood materials used in aircraft repair? A) AC 43.13-1B B) Aircraft specifications or TCDS C) technical standard orders
A) AC 43.13-1B
What is an inspection ring? A) a plastic or aluminum ring which provides a rim around an area of fabric that is cut for access B) a large diameter phenolic washer which allows access to the wooden structure underneath fabric C) a reinforced fabric area where a hinged inspection panel can be installed D) an aluminum inspection panel cover installed over the fabric covering
A) a plastic or aluminum ring which provides a rim around an area of fabric that is cut for access
A PMA is A) an FAA combined design and production approval for modification and replacement articles B) an airworthy certification issued by the manufacturer for approved parts or materials C) an faa issued minimum performance standard for materials, parts, processes and appliances D) a preliminary manufacturing assessment which is part of the type certification process
A) an FAA combined design and production approval for modification and replacement articles
It is best to obtain an MSDS sheet A) before use and keep it on hand while using B) before use C) after use of a chemical D) depending on the material, but usually after use
A) before use and keep it on hand while using
The information contained in AC 43.13 regarding fabric covering is acceptable data A) but not FAA approved data B) and can always be used as a reference for major repairs or alterations C) and is typically the only reference available for obsolete fabric skinned aircraft types D) and can be used instead of manufacturers data depending on the age of the aircraft
A) but not FAA approved data
When patching a plywood skin, abrupt changes in cross-sectional areas which will develop dangerous stress concentration should be avoided: A) by using circular or elliptical patches B) by using trapezoidal shaped patches C) if the patch will be over a structural member, such as a rib, longeron or frame D) by aligning the grain pattern with the underlying ply
A) by using circular or elliptical patches
Which of the following conditions will determine acceptance of wood with mineral streaks? A) careful inspection fails to reveal any decay B) they produce only a small effect on grain direction C) local irregularities do not exceed limitations specified for spiral and diagonal grain
A) careful inspection fails to reveal any decay
When patching a plywood skin, abrupt changes in cross-sectional areas which will develop dangerous stress concentration should be avoided by using A) circular or elliptical patches B) square patches C) doublers with any desired shaped patches
A) circular or elliptical patches
What is likely to occur if unhydrated wash primer is applied to unpainted aluminum and then about 30-40 minutes later a finish topcoat, when the humidity is low? A) corrosion B) a glossy, blush free finish C) a dull finish due to the topcoat 'sinking in' to primer that is still too soft
A) corrosion
Moisture, mildew, chemicals, and acids have no effect on A) glass fabric B) cotton fabric C) polyester fabric
A) glass fabric
When working with chemicals or vapors the best eye protection is A) impact resistant goggles B) safety glasses C) the naked eye to prevent build-up of gasses D) none of the above
A) impact resistant goggles
Substrate surfaces can be measured for correct temperature by A) infrared thermometers B) digital thermometers C) ultrasonic temperature results D) laser measurements
A) infrared thermometers
Glue joints in soft woods require: A) less clamping pressure than hardwood joints B) nailed reinforcement plates C) more clamping pressure than hardwood joints D) curing temperatures above 250 degrees
A) less clamping pressure than hardwood joints
What are the two mechanical punch testers used for determine fabric covering airworthiness? A) maule and seyboth B) elcometer and flute C) saybolt and gatt D) Zhan and ford
A) maule and seyboth
What is the determining factor for the correct weight of textile fabric to be used in covering any aircraft? A) maximum speed and wing loading B) category rating ( aerobatic or normal) C) gross weight rating D) square footage of covered area
A) maximum speed and wing loading
Laminated wood is sometimes used in the construction of highly stressed aircraft components. This wood can be identified by its A) parallel grain construction B) similarity to standard plywood construction C) perpendicular grain construction
A) parallel grain construction
When spraying paint, the tack coat and each topcoat thereafter should be A) perpendicular B) parallel C) diagonal D) circular
A) perpendicular
The most important part of any paint job is the A) preparation of the surface B) mixing of the materials C) cleaning the spray gun D) proper masking of the materials
A) preparation of the surface
Fungicidal dopes are used in aircraft finishing as A) the first coat to prevent fabric rotting and are applied extremely thin to saturate the fabric B) an intermediate coat to prevent fungus damage occurring at any wood structure/fabric joint C) a treatment during the manufacture of the fabric D) the final coat to prevent fabric rotting and are applied full bodied (thick as possible)
A) the first coat to prevent fabric rotting and are applied extremely thin to saturate the fabric
When using a piston type air compressor A) the system must contain filters B) the system will be a dry air system C) the paint must be mixed to a 4:1 ratio D) an external supply gun
A) the system must contain filters
Which type of coating typically includes phosphoric acid as one of its components at the time of application? A) wash primer B) epoxy primer C) zinc chromate primer
A) wash primer
Glue deterioration in wood aircraft structure is indicated A) when a joint has separated and the glue surface shows only the imprint of the wood with no wood fibers clinging to the glue B) when a joint has separated and the glue surface shows pieces of wood and/or wood fibers clinging to the glue C) by any joint separation
A) when a joint has separated and the glue surface shows only the imprint of the wood with no wood fibers clinging to the glue
What is a TSO? A) it is a listing of manufacturer approved parts and materials B) it is an FAA issued minimum performance standard for materials, parts, processes and appliances C) it is an FAA certified instruction manual for certain procedures D) it is an airworthy certification issued by the manufacturer for approved parts of materials
B) it is an FAA issued minimum performance standard for materials, parts, processes and appliances
The cantilever wing uses A) external struts or wire bracing B) no external bracing C) the skin to carry most of the load to the wing butt
B) no external bracing
A correct use for acetone is to A) thin zinc chromate primer B) remove grease from fabric C) thin dope
B) remove grease from fabric
What is used to slow the drying time of some finishes and to prevent blush? A) reducer B) retarder C) rejuvenator
B) retarder
Machine sewn seams in aircraft covering fabrics A) are only used on the fuselage to wing joint B) should be of the folded fell or French fell types C) should be of the plain lapped Sean type D) are never permissible
B) should be of the folded fell or French fell types
Which of the following is a hazard associated with sanding on fabric covered surfaces during the finishing process? A) overheating of the fabric/finish, especially with the use of power tools B) static electricity buildup C) embedding of particles in the finish
B) static electricity buildup
The principle difference between laminated wood and plywood is A) the type of wood used B) that in plywood the grain direction for each layer is at 90 degrees to each other C) the method of adhering different layers together D) that in plywood the grain direction for each layer is parallel to each other
B) that in plywood the grain direction for each layer is at 90 degrees to each other
Acetone is widely used for all but A) a thinner for fiberglass resin B) thinner for dope C) a heavy duty degreaser D) nail polish
B) thinner for dope
Finishing tape (surface tape) is used for what purpose? A) to help prevent 'ripple formation' in covering fabric B) to provide additional wear resistance over the edges of fabric forming structures C) to provide additional anti-tear resistance under reinforcement tape
B) to provide additional wear resistance over the edges of fabric forming structures
The built-up wooden box spar is composed of: A) two I-beams B) upper and lower flanges connected by webs C) three or more solid laminate members D) two cap strips connected with a truss
B) upper and lower flanges connected by webs
The best method of repair for a fabric-covered surface which has an L-shaped tear, each leg of which is approximately 14 inches long, is to A) re-cover the entire bay in which the tear is located B) sew from the end of each leg to the center of the tear with a baseball stitch and then dope on a patch C) sew with a baseball stitch from the center of the tear out toward the extremity of each leg and then dope on a patch
C) sew with a baseball stitch from the center of the tear out toward the extremity of each leg and then dope on a patch
The determining factor(s) for the selection of the correct weight of textile fabric to be used in covering any type of aircraft is the A) maximum wing loading B) speed of the aircraft C) speed of the aircraft and the maximum wing loading
C) speed of the aircraft and the maximum wing loading
The strength classification of fabrics used in aircraft covering is based on A) bearing strength B) shear strength C) tensile strength
C) tensile strength
Drain grommets are A) installed during the manufacture of the fabric B) never used on fabric covered seaplanes C) typically made of plastic or aluminum and either glued or cemented to the fabric surface D) always placed on upper surfaces of airfoils
C) typically made of plastic or aluminum and either glued or cemented to the fabric surface