Definition
A long, flexible drill used to bore holes in locations where a standard straight drill cannot reach, such as inside aircraft structures, behind bulkheads, or through curved or obstructed assemblies. The flexible shaft transmits rotation from the drill motor to the cutting tip while bending around obstacles.
Plain English
A drill with a bendy shaft that lets a mechanic make holes in tight or awkward spots inside an airframe where a normal rigid drill won't fit.
Context Anchor
Seen in aircraft maintenance and repair work, especially when drilling behind panels, inside structure, or close to other parts.
Derivation
Called a 'snake' drill because the flexible shaft bends and follows a curved path much like a snake moving through a tight space. The image captures the tool's defining feature: it can reach where a straight tool cannot.
Why Pilots Care
A pilot may see this term in maintenance records or repair discussions. It points to a tool used to reach a difficult spot, not to a different kind of hole or repair method.
Analogy
It is like using a flexible extension on a screwdriver so you can reach a screw around a corner.
Intuition Check
Do not read “snake drill” as a training exercise or emergency procedure. Here, it means a flexible drilling tool used in aircraft maintenance.
Example Sentence 1
The mechanic used a snake drill to reach the hidden rib flange and drill the new rivet holes without removing the entire skin panel.
Example Sentence 2
During the snake drill the pilot used light differential braking to keep the nose wheel centered on each turn.