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A comprehensive set of questions and answers covering various aspects of aircraft maintenance and inspection. It includes topics such as flight control systems, safety wire procedures, inspection requirements, and aircraft regulations. Designed to help students prepare for a final review exam in aircraft maintenance.
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Fairleads should never deflect the alignment of a cable more than? 3 degrees When installing a castle nut, start alignment with the cotter pin hole at the Minimum recommended torque plus friction drag torque If the control stick of an aircraft with properly rigged flight controls is moved rearward and to the left, the right aileron will move? Down and the elevator will move up The chord of a wing is measured from leading edge to trailing edge The acute angle formed by the chord line of a wing and the relative wind is known as the? Angle of Attack
A tension regulator in the flight control cable system of a large all-metal aircraft is used primarily to Retain a set tension Where is fuselage station No. 137 located? 137 inches after of the zero or fixed reference line Stability about the axis which runs parallel to the line of flight is referred to as? Lateral Stability Placing a piece of cloth around a stainless steel control cable and running it back and forth over the length of the cable is generally a satisfactory method of inspecting for Broken strands If all instructions issued by the swaging tool manufacturer are followed when swaging a cable terminal, the resultant swaged terminal strength should be Full rated strength of the cable Where does the breakage of control cable wires occur most frequently? Breakage usually occurs where cables pass over pulleys and through fairleads.
Where would you find the recommended statement for recording the approval or disapproval for return to service of an aircraft after a 100-hour or annual inspection? 14 CFR Part 43 Movement about the longitudinal axis (roll) in a helicopter is affected by movement of the Cyclic pitch control Where would you find the operating conditions that make a 100-hour inspection mandatory? 14 CFR Part 91 Correctly twisted safety wire should have no more than how many twists? 8 - 10 twists per inch What is the smallest size of safety wire used on primary flight controls? .040 diameter Which is not a secondary/auxiliary flight control surface?
Stabilator For an individual (not a repair station) to conduct a complete 100-hour inspection on an aircraft and approve it for return to service requires a mechanic certificate with Airframe and powerplant ratings Vertical flight (ascent and descent) is controlled by Collective pitch control An aircraft that is due an annual inspection may be flown? If a special permit has been issued for the aircraft. Which statement is correct regarding an aircraft that is found to be unairworthy after an annual inspection, due to an item requiring a major repair (assuming approved data is used to accomplish the repair)? An appropriately rated mechanic may accomplish the repair, and an IA may approve the aircraft for return to service Which statement about Airworthiness Directives (AD's) is true? Compliance with an applicable AD is mandatory and must be recorded in maintenance records
100 hour inspections of instruments Which statement is correct when an aircraft has not been approved for return to service after an annual inspection because of several items requiring minor repair? An appropriately rated mechanic may repair the defects and approve the aircraft for return to service Airworthiness Directives (ADs) are designed to notify the Aircraft owners and other interested persons of unsafe conditions and prescribes the condition under which the product may continue to be operated What is FAR 43. AC (aircraft) inspection When does an A&P mechanic need to fill out a Form 337? After completing a major repair or alteration Radio equipment installations made in accordance with Supplemental Type Certificate data require approval for return to service By the holder of an inspection authorization
Large airplanes and turbine-powered multiengine airplanes operated under Federal Aviation Regulation Part 91, General Operating and Flight Rules, must be inspected In accordance with an inspection program authorized under Federal Aviation Regulation Part 91, Subpart E Which of these methods may be used to inspect fiberglass/honeycomb structures for entrapped water? 1. Acoustic emission monitoring. 2. X-ray. 3. Backlighting 2.X-ray and 3.backlighting Who in the FAA is considered the primary contact for the A&P mechanic? The FAA Airworthiness Inspector (AI) or the Flight Standards Inspector After performing maintenance on an aircraft's landing gear system which may have affected the system's operation, it is usually necessary to Make an operational check with the aircraft on jacks Which of the following instrument discrepancies would require replacement of the instrument?
When is a mechanic responsible for checking AD compliance? When performing an inspection required under part 91, 125, or 135 The maximum time a 100-hour inspection may be extended is 10 hours What cable size is used in primary control systems and in other places where operation over pulleys is frequent? 7x What nondestructive checking method is normally used to ensure that the correct amount of swaging has taken place when installing swaged-type terminals on aircraft control cable? Use a terminal gauge to check the diameter of the swaged portion of the terminal. The vast majority of aircraft control cables are terminated with swaged terminals, that must be checked with a go-no-go gauge before and after, to show compliance with the manufacturer's requirements after the swaging operation.
What is the smallest size cable that may be used in aircraft primary control systems? 1/8 inch. When used in close proximity to magnetic compasses, cotter pins are made of what material? Corrosion resisting steel. Which is an acceptable safety device for a castle nut when installed on secondary structures? Cotter pin How are changes in direction of a control cable accomplished? Pulleys. When inspecting a control cable turnbuckle for proper installation, determine that the safety wire ends are wrapped a minimum of four turns around the terminal end shanks. What would cause the control surface to vibrate during the flight if cables are adjusted properly? Worn attachment fittings.
The threaded rod ends should be checked for the amount of thread engagement by means of the inspection hole provided. Very often, repairs to a control surface require static rebalancing of the control surface. Generally, flight control balance condition may be determined by the behavior of the trailing edge when the surface is suspended from its hinge points After repairing or re-covering a rudder, the surface should be rebalanced to manufacturer's specifications. A universal propeller protractor used to measure the degrees of aileron travel should be zeroed with the aileron in the NEUTRAL position. Washing-in the left wing of a monoplane, for purposes of rigging corrections after flight test, will have what effect on the lift and drag of that wing? drag and lift will increase due to increased angle of attack. If the vertical fin of a single-engine, propeller-driven airplane is rigged properly, it will generally be parallel to the vertical axis but not the longitudinal axis.
Where is the buttock line or buttline of an aircraft? A width measurement left or right of, and parallel to, the vertical centerline. Which should be accomplished before jacking an aircraft? Install critical stress panels or plates. The primary purpose of stall strips is to stall the inboard portion of the wings first The purpose of wing slats is to reduce stalling speed The angle of incidence of an airplane at rest does not change when in flight Where would you find precise information to perform a symmetry alignment check for a particular aircraft? Aircraft service or maintenance manual.
An airplane’s center of lift is usually located aft of its center of gravity For better stall recovery characteristics. The angle of incidence of an airplane: does not change in flight During an inspection of the flight control system of an airplane equipped with differential- type Aileron control, side- to- side movement of the control stick will cause: Each aileron to have a greater up travel (from the streamlined position) than down travel Aircraft flight control trim systems must be designed and installed so that the pilot: Can determine the relative position of the trim tab from the cockpit Movement of an airplane along its lateral axis (roll) is also movement:
Around or about the longitudinal axis controlled by the ailerons The purpose of the vertical fin is to provide: directional stability The chord of a wing is measured from: leading edge to trailing edge When the lift of an airfoil increases, the ______ drag will increase. Induced As the angle of attack of an airfoil increases, the center of pressure will: Move toward the leading edge Stability about the axis which runs parallel to the line of flight is referred to as:
What is meant by “Differential Controls” The travel is not the same in both directions. The purpose of spring tabs or servo tabs is to: assist the pilot in moving the control surfaces What are the four high- lift devices attached to an aircraft wing to provide lift? Trailing edge flaps, Leading edge flaps, Slots, Slats What is aspect ratio? Span over chord What are the axes of an aircraft? Longitudinal, lateral, and vertical.
Which of these do not move opposite in relation to control surface Anti-servo Resultant force has magnitude, direction, and location, and can be represented as a Vector As the critical angle is reached air flow on the top surface of the airfoil will: Burble or Eddy The distribution of the pressure forces over the airfoil varies with: Angle of Attack Magnitude and Direction are used for: Flight Calculations Skin Friction is what type of drag acting on an aircraft. Parasite