Figure 610 provides a comparison of other wood that may be suitable for aircraft repair. Advances in materials and processes used to construct aircraft have led to their evolution from simple wood truss structures to the sleek aerodynamic flying machines of today. What is the correct repair to a wooden aircraft wing spar if the wingattach bolt holes in the spar are elongated. Aviation maintenance technician airframe volume 1 available for download and read online in. Airframe volume 1 ebook pdf this faa handbook provides knowledge for earning the aviation maintenance technician certificate, airframe section. Advisory circular aircraft propeller maintenance flight standards service washington, d. Aircraft wood and structural repair easa part 66 academy. It is recommended by the builders of many types of homebuilt aircraft and is excellent for. The specific topics addressed include aircraft structures, aerodynamics, aircraft assembly and rigging, aircraft fabric covering, aircraft metal structural repair, aircraft welding, aircraft wood and structural repair, advanced composite materials, aircraft painting and finishing, and aircraft electrical systems. Faa approved aviation training custom aerospace manuals. The structural advantage of the biplane construction is that the two wings, vertical struts and wires form a deep light beam, which is more resistant to bending and twisting than a single wing. Aircraft wood and structural repair flight mechanic.
Understanding material types and stress loads are essential. Full cantilever wings have no external bracing and are supported internally. Aircraft wood information page 1 of 8 wood is used throughout the world for a wide variety of purposes. The primary factors to consider in aircraft structures are strength, weight, and reliability. We offer our customers a quality of sheetmetal repairs and modification that are rare to find in these times. Timber is readily worked by hand, using simple tools and is, therefore, far cheaper to use than metal. Predicament in repairing aircraft primary composite structures. Airframe structural concepts and construction methods. This structural repair manual includes the original issue and the following listed revisions. After successful completion of the pilot program, the structural repair manuals were modified to include this set of three composite doubler designs. Faa aviation maintenance technician handbook airframe.
If weight were not a critical factor, repairs could be made with a large margin of safety. Structural repair manual an overview sciencedirect topics. With a tensile strength of 7,000 psi we highly recommend its use when building one of our designs. Past experiences and future trends for composite aircraft. Consideration of aircraft maintenance and repair procedures is a critical part of the development and application of new materials and structures. Chapter 5 aircraft structural repairwood structures.
Aircraft metal structural repair easa part 66 academy. This course prepares the student to assess, design and analyze metallic repairs for damage beyond the limits described in the structural repair manual srm. Previous service experience with metallic and composite structures supports the importance of a maintainable design. Boeing perspectives on safe composite maintenance practices. Aircraft wood structures by christopher gonzalez on prezi.
These principles will be covered briefly with emphasis and examples on. This faa handbook provides the basic information on principles, fundamentals, and technical procedures in the subject matter areas relating to the airframe and powerplant ratings, such as. The faa airframe test questions are drawn from here. Spruce is the preferred choice and the standard by which the other wood is measured. Wood that comes from a conebearing tree is a softwood. However, existing repair methods have the following problems1. This advisory circular ac contains methods, techniques, and practices acceptable to the administrator for the inspection and repair of nonpressurized areas of civil aircraft, only when there are no manufacturer repair or maintenance instructions. Wood aircraft construction and repairs part one in aircraft wood and structural repair the information presented in this chapter is general in nature and should not be regarded as a substitute for specific instructions contained in the aircraft manufacturers maintenance and repair manuals.
Aircraft maintenance and repair 415 structural durability assessments fatigue ratings and allowables longlife structures are achieved by balancing detail design practices with the operating stress environment, figure 5. Aircraft wood and structural repair wood aircraft construction and repairs part one wood aircraft construction and. Aviation maintenance technician handbookairframe pdf ebook. Part of the reason was the slow development of strong, lightweight, metal aircraft structures and the lack of suitable corrosionresistant materials for allmetal aircraft.
Fail safe structures have multiple load paths and if one part fails, other components will take over the load eg multiple attachment points for. Design of wood aircraft structures rc soaring digest. Basic airframe repair subcourse number al0992 edition a us army aviation logistics school fort eustis, virginia 236045439 4 credit hours edition date. Even where access to the joint exists, it is still difficult to positively. This allows for more routine use of composite doubler repairs within the allowable application regime specified in the. Skill set details skill set components click on the export link to export the nrt information to ms word or pdf. Export summary to word export summary to pdf notify me of changes. Are mineral streaks in a piece of structural aircraft wood reason for rejecting the wood. Persons engaged in the inspection and repair of civil aircraft. Rivet joint considerations the design of an aircraft repair is complicated by the requirement that it be as lightweight as possible. A wood product made of strips of wood glued together in such a.
System three t88 epoxy is a 2component, epoxypolyamide adhesive and is the most popular and likely the best choice for gluing wood aircraft and boats. Regardless of type, the spar is the most important part of the wing. Dennis roach, kirk rackow, in aircraft sustainment and repair, 2018. Avotek aircraft structural maintenance aircraft spruce. T88 will cure in temperatures as low as 35f which makes it an excellent choice for homebuilders living in colder climates. Download pdf aviation maintenance technician airframe volume 1 book full free. A shear stress on a rivet attempts to slide through the rivet shank. Aviation maintenance technician handbookairframe volume 1 u. Aircraft wood and structural repair wood was among the first materials used to construct aircraft.
Aircraft wood and structural repair history of wooden aircraft wood aircraft construction and repairs repair of wood aircraft structures preparationof wood for gluing repair of wood aircraft. Early aircraft designers and builders often used ash or hickory. Timber is readily worked by hand, using simple tools. Boeing perspectives on safe composite maintenance practices boeing perspectives on safe composite maintenance practices. Download as ppt, pdf, txt or read online from scribd. Most of the airplanes built during world war i wwi were constructed of wood frames with fabric coverings. Older types of aircraft design utilized an open truss structure constructed of wood, steel, or aluminum tubing. The various species of wood listed in figure 610 are acceptable for structural purposes when used for the repair of aircraft. Hardwoods are not always more dense than softwoods. When other structural members of the wing are placed under load, most of the resulting stress is passed on to the wing spar. If weight were not critical, all repairs could be made.
Aircraft wood information light aircraft association. This unit has been designed to provide learners with an understanding of general airframe structural repairs. All smithsonian museums and smithsonian libraries locations continue to be closed to support the effort to contain the spread of covid19. Types of welding used in aircraft arcwelding procedures, techniques, and welding safety equipment repair of steel tubing aircraft structure by welding 6. Aircraft with wood wing spars may have wood or metal ribs while. It is stronger for its weight than any other material excepting certain alloy steels. All wood and ply wood used in the repair of aircraft structures should be of aircraft quality reference army. Aircraft life monitoring there are 3 philosophical approaches to designing aircraft in order to ensure that they operate safely throughout their operational lives. The inspection of glued joints in wooden aircraft structures presents considerable difficulties. Identify the five basic stresses acting on an aircraft. Boeing aircraft structural repair manual pdf basrm10whom6 46 pages size 3,077 kb 9 apr, 2017 if you want to possess a onestop search and find the proper manuals on your products, you can visit this website that delivers many boeing aircraft structural repair.
To make sure that information in this manual is current and the latest maintenance and inspections procedures. Aircraft structures, aerodynamics, aircraft assembly and rigging, aircraft fabric covering, aircraft metal structural repair, aircraft welding, aircraft wood. It covers the competencies required to inspect and repair aircraft wooden structures. Wood was the material of choice for aircraft construction into the 1930s. Department of transportation federal aviation administration. Aircraft fabric covering, aircraft metal structural repair, aircraft welding, aircraft wood and structural repair, advanced composite materials, aircraft painting and. Pdf predicament in repairing aircraft primary composite. Propellers of all types are covered, including propellers of composite, wood, and metal. Written for the amt school that wants detailed coverage of sheet metal, as well as for the individual who wishes to learn at home, avoteks aircraft structural technician contains indepth information sheet metal fabrication and repair for the aviation industry. Aircraft structural wood defects aircraft structural wood defects permitted cross grain spiraldiagonal grain or combination if not exceed 1 inch in 15 inches checked using free flowing ink wavy, curly and interlocked grain slope not exceeding 1. Some aircraft, such as the bellanca viking series, have wings using wood structural components and wood skins. Sheet metal structures 25 the sheet metal the amount of force that will cause figure 27.
General aviation composite repair composite aircraft repair. Quizlet flashcards, activities and games help you improve your grades. The satisfactory performance of an aircraft requires continuous maintenance of aircraft structural integrity. Repair of wood aircraft structures suitable wood part one. Design of wood aircraft structures smithsonian libraries. Arnol d okkonen abstract the lack of structural durability of epoxy bonds to wood has always been a problem for fabricators of adhesivebonded wood products intended for service in exterior.
The standard for comparing all aircraft structural wood is stika spruce. The design of an aircraft metal structural repair is complicated by the requirement that an aircraft be as light as possible. Wood aircraft construction and repairs part one in aircraft wood and structural repair. They were looking for a type of wood that would be relatively lightweight in addition to being very strong. When damage to an aircraft occurs, the aircraft must be returned to operation as soon as possible after recovering the necessary quality. General aviation composite repair larry l mansberger the university of texas arlington department of mechanical and aerospace engineering the repair of composite aircraft structures is similar to that of other advanced composite repair techniques.
Aircraft welding, aircraft wood and structural repair, advanced composite materials, aircraft. Located in the central northwest we offer our customers top quality sheetmetal services with attention to details that attributes to an excellent job. September 1994 subcourse overview this subcourse is designed to provide you with a general familiarization of the airframe of todays aircraft and repair procedures. Aircraft wood chapter 6 and structural repair aircraft wood and structural repair wood was among the irst materials used to construct aircraft. Basic aircraft structure repair prior to performing maintenance on aircraft structures the mechanic or technician should have a basic understanding of the repair including structural loads and stresses of the aircraft. Figure 25 the most popular types of fuselage structures used in todays aircraft are the monocoque french for single shell and semimonocoque. Wood under attack by moisture or fungus will sound hollow and soft, and it also will have a musty or moldy smell if you can differentiate that odor from the surrounding aircraft smells of fuel, oil, paint, etc. The repair of composite aircraft structures is similar to that of other advanced composite repair techniques. The information presented in this chapter is general in nature and should not be regarded as a substitute for specific instructions contained in the aircraft manufacturers maintenance and repair manuals.
Attention is focused on three main structural components of the towers, i. Prepreg scarf repair, which is one of the typical repair methods for composite structures. Part of the reason was the slow development of strong. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Usually this layup schedule is available in the structural repair manual srm or. It is important that metal structural repairs be made according to the best available techniques because improper repair techniques can pose an immediate or potential danger aircraft metal structural. Structural failure leads to crash general aviation news. Wood structure study guide by givemethelute22 includes 15 questions covering vocabulary, terms and more. We are not announcing a reopening date at this time and will provide updates on a regular and asneeded basis. T88 is a nonbrittle structural adhesive which gives superior finished results even when used under adverse working conditions. Composite repair for metallic aircraft s tructures development and qual ification aspects 3 inservice damages on metallic ac structures structural fatigue cracking is a result of the usage and will finally occur in all aging aircraft, and service findings in alalloys like 7075 and 7079 are common, especially for t6 heat. Pdf aviation maintenance technician handbook airframe. Development of quick repair method for aircraft composite.
For detailed instructions regarding maintenance practices for specific airframe components, refer to the manufacturers publications such as the maintenance manual mm or structural repair. Structural repair manual srm, maintenance planning document mpd and nondestructive test. Faa aviation maintenance technician handbook airframe volume 1 1. An understanding of the inspection and repair of airframe components and structures is an essential tool for all mechanical aircraft technicians, particularly those involved in the maintenance, manufacture or overhaul of aircraft. From the very beginning of aviation wood has been used in aircraft construction. Department of transportation federal aviation administration flight standards service 2012 2. Mea359a inspect and repair aircraft wooden structures.