Hand Tools Flashcards
Hand tools are the everyday instruments of aircraft maintenance. While the concepts are familiar, the FAA exam tests specific knowledge about tool selection, proper use, and safety practices that go beyond general mechanical knowledge. Understanding when to use an open-end versus a box-end wrench, how to properly torque fasteners, and how to apply safety wire is essential.
The General exam includes questions on tool types, torque values, safetying methods, and the proper use of measuring instruments. These flashcards focus on the tool-specific knowledge the FAA expects you to know.
What You Need to Know
- Open-end wrench: grips two flats, allows work in tight spaces
- Box-end wrench: grips all six flats, less likely to slip
- Combination wrench: box-end on one side, open-end on the other
- Adjustable wrench (crescent): use only when proper size is unavailable
- Torque wrench: used to apply a specific tightening force
- Safety wire: single or double twist, 0.020 to 0.041 inch diameter
- Cotter pins: used to secure castellated nuts; do not reuse
- Duckbill pliers: used for safety wire; needle-nose for small parts
Why This Topic Appears on FAA Exams
Improper tool use can damage fasteners, strip threads, or leave safetying inadequately applied — any of which can lead to component failure in flight. The exam verifies that you know which tools to use for specific tasks, how to apply torque correctly, and how to properly safey critical fasteners.
Sample Flashcards
Tap any card to reveal the answer. These are just a sample — the full deck is available inside the study platform.
What is the advantage of a box-end wrench over an open-end wrench?
When should an adjustable (crescent) wrench be used?
What is the purpose of safety wire?
What diameter safety wire is most commonly used on aircraft?
Study Tips
Focus on the safetying methods — safety wire patterns and cotter pin installation are frequently tested. Remember that torque wrenches should be the last tool applied to a fastener, and that torque values depend on fastener size and material. Learn which tools are appropriate for specific tasks.
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Related Topics
Frequently Asked Questions
Safety wire installation — the FAA frequently tests proper wire diameter, twist patterns, direction of installation (so loosening tightens the wire), and the rule that cotter pins must not be reused.
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