Free ASNT NDT Level III Liquid Penetrant Testing (PT) Examination Practice Questions

Sample Practice Questions

Try these 10 sample questions from the ASNT NDT Level III Liquid Penetrant Testing (PT) Examination practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1An aviation PT instructor is designing a qualification assessment under the approach in FAA AC 25-29. What should the assessment establish?

   1. A.A documented record of completing the classroom course
   2. B.Demonstrated proficiency, competence, and experienceCorrect answer: B
   3. C.A documented result from a near-vision examination
   4. D.A documented total of years employed in inspection

   Explanation: FAA AC 25-29 says qualification should be based on "an examination and/or other demonstration of proficiency, competence, and experience, as established in the relevant documents." The assessment therefore establishes demonstrated capability. Attendance, vision results and employment history may contribute to a qualification file, but each is narrower than the qualification assessment specified here.

   Reference: FAA AC 25-29, Development of a Nondestructive Inspection Program/Organization — p. 4, paragraph 5e(2)

2. 2A NASA JSC inspection note specifies Type I, Level 3 penetrant under PRC-6506 Rev F. What does the Type I designator identify?

   1. A.The personnel certification level
   2. B.The penetrant's sensitivity level
   3. C.The use of fluorescent dyeCorrect answer: C
   4. D.The component's fracture-critical classification

   Explanation: PRC-6506 defines "Type I – Fluorescent dye." Type identifies the dye category. Sensitivity is addressed by the separate Level designator; neither term specifies the inspector’s qualification or the component’s criticality.

   Reference: NASA JSC PRC-6506, Process Specification for Liquid Penetrant Inspection — p. 6, section 3.3

3. 3A drawing invoking NASA JSC PRC-6506 Rev F explicitly identifies applicable acceptance criteria. When should the default criteria in section 3.6 be used?

   1. A.Whenever they are less restrictive than the drawing criteria
   2. B.Only when acceptance criteria are not otherwise specifiedCorrect answer: B
   3. C.Whenever the inspection uses a portable system
   4. D.Whenever a Level III inspector prefers the default criteria

   Explanation: PRC-6506 states, "Where acceptance criteria are not otherwise specified the criteria in Section 3.6 shall apply." The default fills an absence of specified criteria. Portability, preference and a comparison of restrictiveness do not authorize replacing the drawing’s explicitly specified criteria.

   Reference: NASA JSC PRC-6506, Process Specification for Liquid Penetrant Inspection — p. 4, section 3.0

4. 4A technical requirement in a document referenced by NASA JSC PRC-6506 Rev F conflicts with PRC-6506 itself. Under its section 4.0, which technical requirements take precedence?

   1. A.The conflicting technical requirements in referenced ASTM E1417
   2. B.The conflicting technical requirements in referenced MIL-STD-1907
   3. C.The technical requirements of PRC-6506Correct answer: C
   4. D.The requirements from whichever referenced document has the newest publication date

   Explanation: PRC-6506 specifies that, in a conflict with technical requirements in referenced documents, "the requirements of this document take precedence." Thus PRC-6506 controls this stated conflict. Referenced ASTM or military technical requirements and publication recency do not displace this express precedence rule.

   Reference: NASA JSC PRC-6506, Process Specification for Liquid Penetrant Inspection — p. 7, section 4.0

5. 5During working hours, a PT trainee learns equipment setup and recognition of indications while an experienced Level II provides technical guidance. How does FAA AC 25-29 classify this training arrangement?

   1. A.Programmed self-teaching
   2. B.Classroom training
   3. C.On-the-job trainingCorrect answer: C
   4. D.Laboratory training

   Explanation: FAA AC 25-29 defines OJT as "Training, during work time, in learning instrument setup, equipment operation, recognition of indications, and interactions under the technical guidance of an experienced Level II, Level III, or other designated individual." Those are the stated conditions. Programmed self-teaching is an independent learning format; classroom and laboratory training are other formats separately listed by the AC, rather than this guided work-time activity.

   Reference: FAA AC 25-29, Development of a Nondestructive Inspection Program/Organization — p. 1, paragraph 3e

6. 6Under NASA JSC PRC-6506 Rev F, what is the lowest permitted penetrant sensitivity level for final inspection of flight hardware?

   1. A.Level 1/2
   2. B.Level 1
   3. C.Level 2
   4. D.Level 3Correct answer: D

   Explanation: PRC-6506 states, "Only sensitivity Level 3 or 4 penetrant materials shall be used for final inspection of flight hardware." Level 3 is the lowest permitted level. Levels 1/2, 1 and 2 fall below that permitted set; this question is limited to the stated NASA flight-hardware application.

   Reference: NASA JSC PRC-6506, Process Specification for Liquid Penetrant Inspection — p. 6, section 3.4

7. 7Which rule applies to linear indications under NASA JSC PRC-6506 Rev F's default acceptance criteria?

   1. A.Reject a linear indication only if its length exceeds 0.010 inch
   2. B.Reject a linear indication only if its length exceeds 0.020 inch
   3. C.Reject a linear indication regardless of its measured lengthCorrect answer: C
   4. D.Reject a linear indication only if its length exceeds 0.030 inch

   Explanation: PRC-6506 states, "all linear indications, regardless of length, shall be cause for rejection of the component." There is no positive length exemption. Each numerical alternative introduces an unsupported exemption; the rounded-indication diameter criterion supplies no linear-indication length allowance.

   Reference: NASA JSC PRC-6506, Process Specification for Liquid Penetrant Inspection — p. 7, section 3.6, item (a), Linear indications

8. 8What two inspection designators must appear, at a minimum, in a note invoking NASA JSC PRC-6506 Rev F?

   1. A.Inspection Type and LevelCorrect answer: A
   2. B.Removal Method and developer Form
   3. C.Precleaning method and drying-oven temperature
   4. D.Lamp type and light-meter calibration date

   Explanation: PRC-6506 says the note must specify "inspection Type (Section 3.3) and Level (Section 3.4)." Other process details may be needed in the instructions, but the two minimum note designators stated here are Type and Level.

   Reference: NASA JSC PRC-6506, Process Specification for Liquid Penetrant Inspection — p. 4, section 3.0

9. 9An aviation PT qualification program proposes using a qualification document other than an industry-accepted standard. Under FAA AC 25-29, what provides the stated basis for using that alternative?

   1. A.Its inclusion in the NDI organization's approved manualCorrect answer: A
   2. B.Its use by a supplier with similar inspection equipment
   3. C.Its publication date being newer than the approved manual
   4. D.Its endorsement by the instructor conducting the course

   Explanation: FAA AC 25-29 permits other qualification documents "when they are included in your NDI organization’s approved manual." Supplier use, recency, and an instructor’s endorsement do not provide that stated approval basis. This question concerns the AC’s qualification-document pathway, not an assertion that ASNT requires a particular employer manual.

   Reference: FAA AC 25-29, Development of a Nondestructive Inspection Program/Organization — p. 4, paragraph 5e(1)

10. 10A supplier offers a penetrant for an inspection governed by NASA JSC PRC-6506 Rev F. Which qualification status for the material is required by section 5.0?

    1. A.Listed or approved for listing on QPL-AMS2644-4Correct answer: A
    2. B.Included in a personnel-training attendance list
    3. C.Described in a solvent safety data sheet
    4. D.Entered in a purchasing department's preferred-vendor list

    Explanation: PRC-6506 requires, "Only materials listed or approved for listing on QPL-AMS2644-4 shall be used for penetrant inspection." The required material qualification is not established merely by training records, hazard information or preferred-vendor status. Those records serve different purposes.

    Reference: NASA JSC PRC-6506, Process Specification for Liquid Penetrant Inspection — p. 8, section 5.0