Definition
A hand or power tool used to install or remove fasteners such as screws, bolts, or rivets by transmitting rotational or impact force from the tool to the fastener. In aviation maintenance, the term most often refers to screwdrivers, nut drivers, and rivet drivers used during airframe and powerplant work.
Plain English
A tool that turns or strikes a fastener to put it in or take it out. The tool 'drives' the screw, bolt, or rivet into place.
Context Anchor
Seen in aircraft maintenance, tool lists, inspection procedures, and instructions for removing or installing panels, covers, and parts.
Derivation
From the verb 'drive,' meaning to push or force something into position. A driver is simply the tool that does the driving — it forces the fastener into the material.
Why Pilots Care
Pilots performing preventive maintenance or preflight inspections often use or encounter drivers when checking inspection panels, cowlings, and access covers. Using the wrong driver can damage fastener heads and create safety issues during flight.
Intuition Check
Driver does not mean a person operating a car here. In this context, it means a tool or tool end that turns a fastener.
Example Sentence 1
The mechanic reached for a Phillips driver to remove the inspection panel screws.
Example Sentence 2
Check the driver gear for wear during the engine inspection.