Aviation Maintenance Troubleshooting
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Questions and Answers

What is the first step in the general troubleshooting process?

  • Discussing the defect with the person who identified it (correct)
  • Conduct a visual inspection
  • Consulting maintenance data
  • Classify the defect

    • What is the purpose of consulting maintenance data in the troubleshooting process?

  • To identify the cause of the defect
  • To determine possible faults and whether the problem is historical in nature (correct)
  • To classify the defect
  • To isolate the defect

    • What is the correct sequence of troubleshooting steps?

  • Discuss the defect, classify the defect, conduct a visual inspection, isolate the defect, locate the defect, correct the defect, conduct a final operational check
  • Conduct a visual inspection, classify the defect, isolate the defect, locate the defect, correct the defect, conduct a final operational check
  • Discuss the defect, consult maintenance data, conduct a visual inspection, classify the defect, isolate the defect, locate the defect, correct the defect, conduct a final operational check (correct)
  • Conduct a visual inspection, classify the defect, conduct a final operational check, isolate the defect, locate the defect, correct the defect

    • Why is it important to transfer defects to a written record?

    <p>Because it is not acceptable to rely on word of mouth</p> Signup and view all the answers

    What is the purpose of conducting a final operational check?

    <p>To ensure that the defect has been corrected</p> Signup and view all the answers

    What is the result of not identifying the cause of a defect?

    <p>The effect of the defect will remain</p> Signup and view all the answers

    What is the relationship between defects and causes?

    <p>Defects occur through cause and effect</p> Signup and view all the answers

    What is the benefit of following a structured troubleshooting process?

    <p>It reduces the time to correct the defect</p> Signup and view all the answers

    What is critical in assessing the condition and extent of a defect?

    <p>Conducting a visual inspection</p> Signup and view all the answers

    What is necessary when preparing to conduct an operational check?

    <p>Placing the aircraft in a suitable location, sourcing external electrical power, pneumatic air and/or hydraulic fluid, and gathering ground service equipment</p> Signup and view all the answers

    Why is it important to place the aircraft in the condition under which the defect was initially found?

    <p>To recreate the conditions in which the defect occurred</p> Signup and view all the answers

    What should be checked during an operational test of an undercarriage retraction?

    <p>External leakage, the correct direction of component movement, its proper sequence of operation and timing, its speed, and whether the complete cycle was obtained</p> Signup and view all the answers

    What is important for a maintainer to do during an operational test?

    <p>Observe, listen, and feel components during operation, safety permitting</p> Signup and view all the answers

    What should be done after gathering information from the initial inspection and operational check?

    <p>Classify the defect</p> Signup and view all the answers

    What should be included in the initial inspection?

    <p>Evidence of proper installation, material condition, leaks, looseness, and security</p> Signup and view all the answers

    Why is caution necessary when following maintenance data?

    <p>To avoid errors or misunderstandings that may lead to incorrect maintenance</p> Signup and view all the answers

    What is the primary importance of generating a report of a defect?

    <p>To ensure the troubleshooting procedure is applied to the correct aircraft</p> Signup and view all the answers

    What is the first step in the troubleshooting process?

    <p>Attempt to gain additional information by discussing the defect with the person who identified it initially</p> Signup and view all the answers

    What is the purpose of reviewing previous technical entries?

    <p>To determine if the defect has a history and what previous rectification actions have been taken</p> Signup and view all the answers

    What should be consulted to establish the recommended procedure to follow?

    <p>Aircraft Maintenance Manual</p> Signup and view all the answers

    What is the purpose of conducting a Visual Inspection?

    <p>To conduct a thorough and searching visual inspection of all likely components implicated in the scope of the defect</p> Signup and view all the answers

    What should be considered during the rectification process?

    <p>The impact of the defect on other systems</p> Signup and view all the answers

    What type of records can a report of a defect be generated from?

    <p>Either an aircraft technical log entry, an aircraft logbook entry, or an Airworthiness Directive or similar</p> Signup and view all the answers

    Why is it important to remember that defects occur through cause and effect?

    <p>Once the cause is identified, the effect can be corrected</p> Signup and view all the answers

    What is unique about electrical valves?

    <p>They always produce an audible click when operated</p> Signup and view all the answers

    What is a common cause of malfunctions in pneumatic systems?

    <p>All of the above</p> Signup and view all the answers

    What can assist with further isolation of the cause of a problem?

    <p>Both A and B</p> Signup and view all the answers

    What can make pneumatic system faults difficult to isolate?

    <p>Leaks, incorrect regulator settings or filter restrictions</p> Signup and view all the answers

    What type of fault is common in hydraulic and pneumatic systems?

    <p>All of the above</p> Signup and view all the answers

    What is a characteristic of electrical malfunctions?

    <p>Any of the above</p> Signup and view all the answers

    What type of valves are operated electrically?

    <p>Hydraulic transfer valves</p> Signup and view all the answers

    What is a common issue in pneumatic systems?

    <p>Flow rates higher than the source can supply</p> Signup and view all the answers

    What are the four basic categories of system operational malfunctions?

    <p>Mechanical, Fluid, Pneumatic, and Electrical</p> Signup and view all the answers

    What is the primary issue with a mechanical linkage discrepancy?

    <p>It can restrict valve and mechanism travel</p> Signup and view all the answers

    What is an example of a mechanical discrepancy?

    <p>Worn linkages</p> Signup and view all the answers

    What can affect the flow of fluid in a hydraulic circuit?

    <p>External and internal leakage</p> Signup and view all the answers

    Why is it essential to be aware of fuel used to cool hydraulic fluid?

    <p>To detect internal leakage in a fuel tank</p> Signup and view all the answers

    What is the primary concern with a hydraulic defect?

    <p>Affecting the normal flow of fluid</p> Signup and view all the answers

    What is the benefit of identifying mechanical discrepancies during the initial visual inspection?

    <p>To prevent operational malfunctions</p> Signup and view all the answers

    What is a common characteristic of external and internal leakage in a hydraulic circuit?

    <p>External leakage is easily observed, but internal leakage is not</p> Signup and view all the answers

    Study Notes

    General Troubleshooting Process

    • Troubleshooting procedures are similar in most applications, whether mechanical, hydraulic, pneumatic, or electrical.
    • The process begins with discussing the defect with the person who identified it.
    • Maintenance data is consulted to determine possible faults and whether the problem is historical in nature.

    Troubleshooting Steps

    • Conduct a visual inspection.
    • Conduct an operational check.
    • Classify the defect.
    • Isolate the defect.
    • Locate the defect.
    • Correct the defect.
    • Conduct a final operational check.

    Identify the Defect

    • All defects must be transferred to a written record.
    • Defect reports can be generated from:
      • An aircraft technical log entry.
      • An aircraft logbook entry.
      • An Airworthiness Directive or similar.
      • A Service Bulletin or similar.

    Conduct a Visual Inspection

    • Confirm the identity of the aircraft.
    • Conduct a thorough and searching visual inspection of all likely components implicated in the scope of the defect.
    • Check for proper installation, material condition, leaks, looseness, and security.

    Conduct an Operational Check

    • Prepare the aircraft and/or system in the condition under which the defect was initially found.
    • Check for external leakage, correct direction of component movement, proper sequence of operation and timing, and speed.

    Classify the Defect

    • Defects can be classified into four basic categories:
      • Mechanical.
      • Fluid (Hydraulic, Fuel, Oil, Water, Waste, etc).
      • Pneumatic.
      • Electrical.

    Mechanical Defects

    • Mechanical discrepancies can be found during the initial visual inspection or observed during the operational check.
    • Common mechanical defects include:
      • Worn linkages.
      • Broken linkages.
      • Improperly adjusted linkages.
      • Improperly installed linkages.

    Fluid Defects

    • Hydraulic defects can be caused by:
      • External and internal leakage.
      • A total or partial restriction.
      • Improper lubrication.
    • Be aware of internal leaks, especially if fuel is used to cool hydraulic fluid.

    Electrical Defects

    • Electrical malfunctions can be caused by:
      • A power failure.
      • A wiring fault.
      • A component failure.
    • Electrical valves have mechanical indicators to display their operation, and solenoid valves usually produce an audible click when operated.

    Pneumatic Defects

    • High-pressure air systems exhibit similar faults to those of a hydraulic system.
    • Low-pressure and vacuum system faults can be difficult to isolate, especially leaks, incorrect regulator settings or filter restrictions.
    • Flow rates higher than that which the source is capable of supplying are a common cause of malfunctions.

    Isolate the Defect

    • Not all defects are identified by a visual examination or operational test.
    • Aircraft with on-board maintenance systems or Aircraft Maintenance Manuals with a troubleshooting tree of procedures to follow assist with further isolation of the cause of the problem.

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    Troubleshooting Techniques PDF - Aviation Australia

    Description

    This quiz covers general troubleshooting processes and procedures in aircraft maintenance, including discussing defects and consulting maintenance data.

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