Aircraft Drawings
(8103) What type of line is normally used in a drawing or blueprint that indicates invisible edges or contours?
AM.I.B.K1 Reference: FAA-H-8083-30 A medium-weight dashed line is called a hidden line and is used to show an edge or object not visible to the viewer. A medium solid line is used as a visible outline or object line. Alternate short and long light dashes are used to show a center line.
(8026.1) 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?
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.
AM.I.G.K20 Reference: FAA-H-8083-30 Registration numbers and letters that are 12 inches tall are 8 inches wide. The number 1 is 2 inches wide. The spaces between the characters are 2 inches. The minimum space required for the number N1683C is 52 inches.
(8227) A mechanic has completed a bonded honeycomb repair using the potted compound repair technique. What nondestructive testing method is used to determine the soundness of the repair after the repair has been cured?
AM.I.K.K3 Reference: FAA-H-8083-30 After a bonded honeycomb repair has been made using the potted-compound repair technique, the soundness of the repair can be tested by using the metallic ring test. The repaired surface is tested by tapping it with the edge of a coin. If the repair is sound, the tapping will produce a metallic ringing sound. If there is any void in the material, the tapping will produce a dull, thudding sound.
Where is the compliance record with Airworthiness Directives or manufacturers' service bulletins normally indicated?
Aircraft maintenance records.
How is a quality system assured?
By an internal reporting and auditing system.
Reference: FAA-H-8083-30
A quality system must include procedures for planning, conducting, and documenting internal audits to ensure compliance with the approved quality system. The procedures must include reporting the results of internal audits to the manager responsible for implementing corrective and preventive actions.
(8107) A specific measured distance from the datum or some other point identified by the manufacturer, to a point in or on the aircraft is called a
AM.I.B.K4 Reference: FAA-H-8083-30 A station number is a number used to identify the number of inches from the datum or other point identified by the manufacturer to a point in or on the aircraft.
(8348) How may magnesium engine parts be cleaned?
AM.I.G.K1 Reference:FAA-H-8083-30
Magnesium engine parts are cleaned by washing them with a commercial solvent such as naphtha or Stoddard solvent, then soaking them in a decarbonizer that has been proven safe for magnesium.
Any hard deposits that are not removed by this treatment can be removed with a scraper or with a grit blast.
Identify the correct statement.
A. An outside micrometer is limited to measuring diameters.
B. Tools used on certificated aircraft must be an approved type.
C. Dividers do not provide a reading when used as a measuring device.
AM.I.K.K1 Reference: FAA-H-8083-30
Dividers do not provide a reading when they are used as a measuring device. They are used by placing their points at the locations between which the measurement is to be taken. Then the distance between the points is measured with a steel machinist's scale.
If work performed on an aircraft has been done satisfactorily, the signature of an authorized person on the maintenance records for maintenance or alterations performed constitutes
Reference:14 CFR 43.9 The signature constitutes the approval for return to service only for the work performed.
According to Dr. James Reason, two types of human failure can occur. They are:
active and latent.
Reference: FAA-H-8083-30
There are two types of failure which can occur - active and latent. An active failure is one in which the effects are immediate. A latent failure occurs as a result of a decision made or action taken long before the incident or accident occurs.
(8112) (1) Schematic diagrams indicate the location of individual components in the aircraft.
(2) Schematic diagrams indicate the location of components to each other within the system.
Regarding the above statements,
only 2 is true Statement 2 is true. Schematic diagrams do show the location of the components to each other within the system.
(8351) Nickel-cadmium battery cases and drain surfaces that have been affected by electrolytes should be neutralized with a solution of
AM.I.G.K17 Reference: FAA-H-8083-30An area that has been affected by the electrolyte from a nickel-cadmium battery should be washed and neutralized with ammonia or a boric acid solution, allowed to dry thoroughly, then painted with an alkali-resisting varnish.
If it is necessary to accurately measure the diameter of a hole approximately 1/4 inch in diameter, the mechanic should use a
Remove the small-hole gauge from the hole and measure its outside diameter with a micrometer caliper.
Which maintenance action is an airframe major repair?
Reference:14 CFR Part 43
According to the list of major alterations, major repairs, and preventive maintenance listed in 14 CFR Part 43, Appendix A, the repair of portions of skin sheets by making additional seams is considered to be an airframe major repair. Neither of the other alternatives listed here is an airframe major repair.
Many areas of aviation have shifted their focus from eliminating error to
preventing and managing errors.
Reference: FAA-H-8083-30
The goal of the Maintenance Error Decision Aid (MEDA) is to investigate errors, understand root causes, and prevent and manage accidents (most of the factors that contribute to an error can be managed).
(8116) For sketching purposes, almost all objects are composed of one or some combination of six basic shapes; these include the
AM.I.B.K1 Reference: FAA-H-8083-30 Almost all objects are composed of one or some combination of the triangle, circle, cube, cylinder, cone, and sphere.
(8357) The rust or corrosion that occurs with most metals is the result of
AM.I.G.K2 Reference: AC 43-4A Corrosion is a natural phenomenon which attacks metal by chemical or electrochemical action and converts it into a metallic compound, such as an oxide, hydroxide, or sulfate. Corrosion occurs because of the tendency for metals to return to their natural state. Noble metals like gold and platinum do not corrode since they are chemically uncombined in their natural state.
How can the dimensional inspection of a bearing in a rocker arm be accomplished?
A dimensional inspection of a bearing in a rocker's arm can be made by expanding a telescopic gauge inside the bushing (bearing) until its length is the same as the inside diameter of the bushing. Remove the gauge and measure it with a vernier micrometer caliper. Measure the rocker arm shaft with the same vernier micrometer caliper.
The difference between the diameter of the shaft and that of the hole is the fit of the shaft in its bushing.
For aircraft operated under Part 91, when is the aircraft's total time required to be recorded in aircraft maintenance records?
14 CFR 43.11 states that the person approving for return to service an aircraft, airframe, aircraft engine, propeller, appliance, or part after any inspection performed under Part 91... shall make an entry in the maintenance record of that equipment containing the following... (2) The date of the inspection and aircraft total time in service.
When we think of aviation safety in a contemporary way, human error is
the starting point.
Reference: FAA-H-8083-30
The "SHEL" model is another concept for investigating and evaluating maintenance errors. The acronym SHEL represents software, hardware, environment, and liveware -- with the human as the starting point for all.
8117.1 A simple way to find the center of a circle on a sketch or drawing, or a circular piece of material is to
AM.I.B.K1 Reference: FAA-H-8083-30 An easy way to find the center of a circle on a sketch is to draw two non-parallel chord lines across the circle. Then, draw a perpendicular bisector of each of these chord lines. The bisector lines will cross at the center of the circle.
(8362) Which of the following are acceptable to use in cleaning anodized surfaces?
AM.I.G.K1 Reference: FAA-H-8083-30 Anodized surfaces should never be cleaned with anything that could scratch through the anodizing and expose the untreated alloy, or that could contaminate the surface. For this reason, only aluminum wool or fiber bristle brushes are suitable for cleaning these surfaces.
Dividers do not provide a reading when used as a measuring device.
Dividers do not provide a reading when used as a measuring device. They are used by placing their points at the locations where the measurement will be taken. Then the distance between the points is measured with a steel machinist's scale.
A person installing a product, part, or appliance on a type of certificated product must make certain that the item's records document the
Reference: FAA-H-8083-30
Any product, part, or material installed on a type certificate product must meet FAA airworthiness standards.
All of the following are consequences of human error, except
mental stressor.
Reference: FAA-H-8083-30
Human error is defined as a human action with unintended consequences. There are four consequences of human error: little or no effect, damage to equipment/hardware, personal injury, or catastrophic damage.