Free Inspection Authorization Knowledge Test Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Inspection Authorization Knowledge Test practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1An IA is evaluating the data package for a major structural repair. What status must the technical data have before the IA can approve the completed repair for return to service?

   1. A. Technical data approved by the FAA Administrator
   2. B. Technical data acceptable to the FAA Administrator
   3. C. Technical data recommended in a maintenance advisory
   4. D. Technical data substantiated by a manufacturer's service history

   Answer: A

   Explanation: The FAA guide states, "This means the holder of an IA ensures that approved data is available and is used as the basis for the approval." The major repair requires approved data; acceptability or a recommendation alone is a different status.

   Reference: Inspection Authorization Information Guide — Chapter 2, What To Look for During an Inspection, p. 6

2. 2An IA considers using AC 43.13-2C as approved alteration data for a nonpressurized area. What is its maximum stated aircraft gross weight?

   1. A. 6,000 pounds
   2. B. 19,000 pounds
   3. C. 12,500 pounds
   4. D. 20,000 pounds

   Answer: C

   Explanation: Paragraph 1.1 limits this application to "12,500 pounds gross weight or less." This is the maximum stated weight, subject to the other applicability conditions.

   Reference: AC 43.13-2C—Acceptable Methods, Techniques, and Practices—Aircraft Alterations — ¶1.1, p. 1-1

3. 3An IA uses a personally designed annual-inspection checklist. What minimum scope must it contain?

   1. A. Appendix D items and applicable rotorcraft requirements
   2. B. Appendix A items and applicable rotorcraft requirements
   3. C. Appendix B items and applicable rotorcraft requirements
   4. D. Appendix E items and applicable rotorcraft requirements

   Answer: A

   Explanation: Section 43.15(c)(1) requires "the scope and detail of the items contained in appendix D to this part and paragraph (b) of this section." A personally designed checklist must retain that minimum.

   Reference: 14 CFR Part 43—Maintenance, Preventive Maintenance, Rebuilding, and Alteration — §43.15(c)(1)

4. 4Under §43.15(d)(1), which program event requires a complete aircraft inspection before scheduled routine and detailed stages begin?

   1. A. A change of supervising mechanic
   2. B. An inspection away from the usual station
   3. C. Entry into the progressive inspection system
   4. D. Overhaul of an individual component

   Answer: C

   Explanation: Section 43.15(d)(1) requires the inspector to "at the start of a progressive inspection system, inspect the aircraft completely." Entry is the specified trigger; scheduled routine and detailed inspections follow.

   Reference: 14 CFR Part 43—Maintenance, Preventive Maintenance, Rebuilding, and Alteration — §43.15(d)(1)

5. 5A repaired wing structure will be hidden when its metal skin is installed. What inspection does the FAA IA guide require to examine the repair before concealment?

   1. A. Progressive inspection
   2. B. Precover inspection
   3. C. 100-hour inspection
   4. D. Annual inspection

   Answer: B

   Explanation: The guide says, "a precover inspection is necessary." The repair must be examined while its workmanship, condition, and protective treatment remain accessible.

   Reference: Inspection Authorization Information Guide — Chapter 2, What To Look for During an Inspection, p. 8

6. 6A major alteration changes operating limitations in the approved aircraft flight manual. What must occur before approval for return to service under §43.5(c)?

   1. A. Retain the limitations and describe the change on Form 337
   2. B. Retain the limitations and revise the equipment list
   3. C. Retain the limitations and amend the inspection checklist
   4. D. Revise and set forth the affected approved limitations

   Answer: D

   Explanation: Section 43.5(c) requires affected limitations or flight data to be "appropriately revised and set forth as prescribed in § 91.9". Recordkeeping alone cannot preserve obsolete limitations.

   Reference: 14 CFR Part 43—Maintenance, Preventive Maintenance, Rebuilding, and Alteration — §43.5(c)

7. 7During the reciprocating-engine run required before annual-inspection approval, which characteristic is assessed by static and idle RPM under §43.15(c)(2)?

   1. A. Cylinder compression
   2. B. Power output
   3. C. Oil consumption
   4. D. Ignition timing

   Answer: B

   Explanation: Section 43.15(c)(2)(i) specifies "Power output (static and idle r.p.m.);" as part of the manufacturer-recommended performance determination. The engine run occurs before approval.

   Reference: 14 CFR Part 43—Maintenance, Preventive Maintenance, Rebuilding, and Alteration — §43.15(c)(2)(i)

8. 8A progressive-inspection task requires thorough examination with disassembly as necessary. Which classification in §43.15(d)(1) describes this task?

   1. A. Routine inspection
   2. B. Preflight inspection
   3. C. Operational check
   4. D. Detailed inspection

   Answer: D

   Explanation: Section 43.15(d)(1) states, "Detailed inspections consist of a thorough examination" with necessary disassembly. Routine inspections are visual examinations insofar as practicable without disassembly.

   Reference: 14 CFR Part 43—Maintenance, Preventive Maintenance, Rebuilding, and Alteration — §43.15(d)(1)

9. 9After satisfactory completion of a major repair, the mechanic signs the maintenance entry under §43.9(a)(4). What is the scope of the approval represented by that signature?

   1. A. Approval for return to service of the entire aircraft
   2. B. Approval for continued operation until the next annual
   3. C. Approval for return to service of the work performed
   4. D. Approval for conformity of the complete aircraft type design

   Answer: C

   Explanation: Section 43.9(a)(4) states, "The signature constitutes the approval for return to service only for the work performed." It does not certify unrelated work, inspection intervals, or historical records.

   Reference: 14 CFR Part 43—Maintenance, Preventive Maintenance, Rebuilding, and Alteration — §43.9(a)(4)

10. 10A new equipment mount is analyzed using a 4g limit load and a 1.5 safety factor, with no special factors. What ultimate load factor results?

    1. A. 6.0g
    2. B. 2.5g
    3. C. 2.67g
    4. D. 5.5g

    Answer: A

    Explanation: Paragraph 2.4.2 defines ultimate factors as "the limit load factors multiplied by a prescribed factor of safety." Thus 4 × 1.5 = 6g; subtraction, division, or addition gives the distractors.

    Reference: AC 43.13-2C—Acceptable Methods, Techniques, and Practices—Aircraft Alterations — ¶2.4.2, p. 2-2