Aircraft Powerplant Major Repairs and Modifications
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Questions and Answers

Replacing an autopilot with parts manufactured using approved drawings is categorized as which type of repair?

  • Appliance major repair
  • Component minor repair
  • Accessory major repair
  • Airframe minor repair (correct)

    • The calibration and repair of instruments falls under which classification according to Part IS 5.1.12?

  • Appliance major alterations
  • Components major repair
  • Appliance major repair (correct)
  • Component minor repair

    • A modification of the basic design not made per the manufacturer's recommendations is regarded as what?

  • Airframe major alterations
  • Appliance major modification (correct)
  • Accessory major repair
  • Appliance major repair

    • Changes made in accordance with the approved recommendations of the landing gear shock strut manufacturer are classified as which type?

    <p>Appliance major alteration</p> Signup and view all the answers

    Overhauling a pressure type carburetor mechanical accessory is classified as what?

    <p>Appliance major repair</p> Signup and view all the answers

    Repair operations on hydraulic/pneumatic accessories are classified as which?

    <p>Appliance major alteration</p> Signup and view all the answers

    What classification is assigned to any change to the basic design of navigational equipment approved under type certificate?

    <p>Appliance major alteration</p> Signup and view all the answers

    Strengthening or reinforcing the fuselage longeron is classified as which type of alteration or repair?

    <p>Airframe major alteration</p> Signup and view all the answers

    What is the classification of replacing components or complete units like landing gears with parts from the original manufacturer?

    <p>Airframe minor repair</p> Signup and view all the answers

    What type of repair is made on the hydraulic or pneumatic systems?

    <p>Airframe minor repair</p> Signup and view all the answers

    Changes made to structural elements that do not exceed two percent of the certificate empty weight are classified as what?

    <p>Airframe minor alterations</p> Signup and view all the answers

    What type of maintenance involves replacing defective safety wiring or cotter pins?

    <p>Preventive maintenance</p> Signup and view all the answers

    The installation or removal of equal or lesser weight equipment in the same location is classified as which type of alteration?

    <p>Airframe minor alteration</p> Signup and view all the answers

    What does troubleshooting and repairing a broken circuit in the landing light wiring circuit classify as?

    <p>Preventive maintenance</p> Signup and view all the answers

    Which regulation governs the issuance of an Airworthiness Certificate?

    <p>14 CFR Part 21</p> Signup and view all the answers

    Which regulation provides the airworthiness standards for airplanes certificated in the normal category?

    <p>14 CFR Part 23</p> Signup and view all the answers

    What classification applies to the separation or disassembly of a crankcase or crankshaft of a reciprocating engine with an integral supercharger?

    <p>Powerplant Major Repair</p> Signup and view all the answers

    Which of the following describes special repair to structural engine parts through methods like welding or plating?

    <p>Powerplant Major Repair</p> Signup and view all the answers

    What type of maintenance is indicated when there is a change to the hub design of a propeller?

    <p>Propeller Major Modification</p> Signup and view all the answers

    What is the classification of removing accessories listed as required equipment on engine specifications?

    <p>Powerplant Major Modification</p> Signup and view all the answers

    Converting to a different fuel rating than specified in engine documents is classified as what type of modification?

    <p>Powerplant Major Modification</p> Signup and view all the answers

    Which of the following is considered a powerplant major alteration?

    <p>Installation of unapproved engine accessories</p> Signup and view all the answers

    What classification applies to changes of engine cowling that do not affect cooling?

    <p>Powerplant Minor Alteration</p> Signup and view all the answers

    What example best fits the repair of deep dents or cuts on a propeller?

    <p>Propeller Major Alteration</p> Signup and view all the answers

    Which regulation outlines instrument range markings for an airplane in the normal category?

    <p>14 CFR Part 23</p> Signup and view all the answers

    What part of the Federal Aviation Regulations details the requirements for mechanic certificates and ratings?

    <p>14 CFR Part 65</p> Signup and view all the answers

    Which of the following actions are required after performing minor repairs on a certificated aircraft?

    <p>Entries in the maintenance record are necessary</p> Signup and view all the answers

    Where can the operating conditions for mandatory 100-hour inspections be found?

    <p>14 CFR Part 91</p> Signup and view all the answers

    Which statement is true regarding correcting discrepancies found after an annual inspection?

    <p>An appropriately rated mechanic can correct the discrepancies</p> Signup and view all the answers

    Which of the following inspections can a certificated airframe and powerplant mechanic perform?

    <p>A progressive inspection under specified circumstances</p> Signup and view all the answers

    Which of the following statements regarding propellers and the Airworthiness Directive system is true?

    <p>A certificated powerplant mechanic may make minor repairs on aluminum propellers</p> Signup and view all the answers

    What must be documented after conducting an annual inspection on an aircraft?

    <p>The approval or disapproval statement recorded in the maintenance log</p> Signup and view all the answers

    Which statements about certificated mechanics are true?

    <p>Both No. 1 and No. 2 are true</p> Signup and view all the answers

    Who has the authority to approve for return to service a propeller after a 100-hour inspection?

    <p>A non-certificated mechanic under supervision</p> Signup and view all the answers

    The flight test of an aircraft that has undergone major repair is mandatory before it can be returned to service. Which other situation requires a flight test?

    <p>After any minor repair, such as replacing wing tips</p> Signup and view all the answers

    What is the classification of replacing a damaged vertical stabilizer with a new identical stabilizer purchased from the manufacturer?

    <p>Minor repair</p> Signup and view all the answers

    The inspection of the main rotor transmission gearbox for obvious defects falls under what category of inspection?

    <p>Major repair inspection</p> Signup and view all the answers

    Changing the fabric on fabric-covered components like wings and stabilizers is classified as what?

    <p>Major repair</p> Signup and view all the answers

    Changes of any type to a powerplant or airframe not listed in specifications are classified as what?

    <p>Aircraft major alteration</p> Signup and view all the answers

    Which of the following statements regarding compliance with FAA regulations is true?

    <p>Neither No.1 nor No.2 is true</p> Signup and view all the answers

    Which statement about approved data is accurate?

    <p>Both No.1 and No.2 are true</p> Signup and view all the answers

    What is the purpose of the Air Transport Association of America (ATA) Specification No. 100?

    <p>Both No.1 and No.2 are true</p> Signup and view all the answers

    Which statement regarding Supplemental Type Certificates is correct?

    <p>Only No.1 is true</p> Signup and view all the answers

    What forms can the action required by an Airworthiness Directive (AD) take?

    <p>1, 2, 3, 4 and/or 5</p> Signup and view all the answers

    Which of the following can authorize deviations from an aircraft’s original type design?

    <p>FAA Form 337, Supplemental Type Certificate, and Airworthiness Directives</p> Signup and view all the answers

    What is true about the action forms required by an Airworthiness Directive?

    <p>They can require a combination of inspections, replacements, and modifications</p> Signup and view all the answers

    Which of the following statements is correct about Technical Standard Orders?

    <p>Requires no further approval to install</p> Signup and view all the answers

    Study Notes

    Propeller & Powerplant (Aircraft)

    • Separation or disassembly of a crankcase or crankshaft of a reciprocating engine with an integral supercharger is an example of a Powerplant Major Repair.
    • Any maintenance operation requiring the cold and hot sections of the engine is classed as a Powerplant major alteration.
    • Special repairs to structural engine parts, using welding, plating, metalizing or other methods is an example of a Powerplant major repair.
    • Changing the hub design is a Propeller Major Modification, or a Propeller Major Repair.
    • Removing accessories listed as required equipment on the aircraft or engine specifications is a Powerplant Major Modification.
    • Conversions of any sort for using fuel rating or a grade other than that listed in the engine specifications is a Powerplant major modification.
    • Installation of an accessory not approved for the engine is a Powerplant major modification/alteration.
    • Maintenance operations requiring disassembly of a non-float type carburetor is classed as a Powerplant Major Repair.
    • Changes to the basic design of or the relocation of brackets or braces of the propeller control are considered as Propeller Minor Repair.
    • Replacing a carburetor with the same type as specified by the manufacturer is a Powerplant Major Alteration.
    • Repair of dents, cuts, scars, nicks, etc. on a propeller is considered a Propeller Major Alteration.
    • Assembly and disassembly of a ground adjustable propeller is considered Propeller Minor Repair.
    • Changes of engine cowling which do not effect engine cooling are classed as a Powerplant Minor Alteration.
    • Overhaul of pressure type carburetor mechanical accessories is considered as Appliance Major Repair.
    • Repair operation of hydraulic/pneumatic accessories is classed as Appliance Major Alteration.
    • Any change to the basic design of navigational equipment approved under type certificate is classed as an Appliance Major Alteration.

    Appliance

    • Rewinding the field coil of an electrical accessory is an example of Appliance Major Repair.
    • Replacement of an autopilot with manufactured parts is Appliance major repair.
    • Calibration and repair of instruments is classed as Appliance Major Repair.
    • Modification of a basic design not in accordance with appliance recommendations is Appliance major modification.
    • Change in basic design made in accordance with "ASSEC" or landing gear shock strut manufacturer in accordance with ATO airworthiness directives are Appliance Major Alteration.

    Airframe

    • Restoration of engine mounts to a safe condition after damage is classed as Powerplant Major Repair.
    • Strengthening or reinforcing the fuselage longeron is classed as Airframe Major Alteration.
    • Modifications of the following type to a power plant or airframe not listed in manufacturer specifications are classed as Aircraft Major Alteration.
    • Modification to basic design of the exhaust system is considered as Aircraft Major Alteration.
    • Changes to the basic design of fuel or oil system is classed as Airframe Major Modification
    • Replacement of components, such as landing gears with parts supplied by the original manufacturer in accordance with drawings is considered as Components Major Repair.
    • Repair made on the hydraulic/pneumatic system is classed as Preventive Maintenance
    • Changes to structural elements to improve service life or reduce cost are classed as a Airframe Minor Repair.
    • Installation or removal of equipment of equal weight in the same location as last listed optional equipment is classed as Airframe Minor Alteration
    • Replacing defective safety wiring or cotter pins is classed as Preventive Maintenance.
    • Simple minor preservations and replacement of small parts is classed as Airframe Minor Repair.
    • Replacing or cleaning spark plugs and gap clearance is considered as Preventive Maintenance.
    • Making simple fabric pitches not required rib stitching or removal of structural parts is considered as Preventive Maintenance. -Troubleshooting and repairing broken circuit is considered as Preventive Maintenance.

    CFR

    • Issuance of an Airworthiness Certificate is governed by 14 CFR Part 21.
    • Airworthiness standards for an airplane in the normal category are in 14 CFR Part 23.
    • Information regarding instrument range markings for an airplane in the normal category is in 14 CFR Part 23.
    • Checklist for performing annual or 100-hour inspections is in Appendix of 14CFR Part 43.
    • Recommended statement for recording approval/disapproval of aircraft is in 14 CFR Part 43.
    • Mechanic certificates and general operating rules for holders is in 14 CFR Part 65.
    • Operating conditions that make 100-hour inspection mandatory is in 14 CFR Part 91

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    Propeller & Powerplant Aircraft PDF

    Description

    Test your knowledge on major repairs and modifications related to aircraft powerplants. This quiz covers crucial maintenance operations, from crankcase disassembly to propeller design changes. Understand the significance of adhering to aircraft specifications and regulations.

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