Definition
Slang term used in aircraft sheet-metal work for small explosive rivets. When heated, the rivet's internal charge detonates and expands the shank to form a tight, blind fastener in places where a bucking bar cannot reach.
Plain English
A nickname for tiny explosive rivets used to fasten aircraft skin in spots that can't be reached from the back side. A small charge inside the rivet pops when heated and locks it in place.
Context Anchor
Encountered during preflight inspections, aircraft storage, and maintenance checks on aircraft that have been parked for a while.
Derivation
The slang likely comes from the small size of these rivets and the quick 'pop' they make when fired -- reminiscent of the squeak of a mouse. The name stuck in shop language even though the rivets themselves have a formal designation.
Why Pilots Care
Rodent damage can lead to electrical failures, jammed controls, or in-flight fires, all of which directly affect safety and airworthiness.
Grounding Statement
A parked airplane can look normal from the outside while a mouse nest or chewed wiring is hidden inside.
Intuition Check
Mice' here has nothing to do with rodents. In the sheet-metal shop it means small explosive rivets, not animals or computer hardware.
Example Sentence 1
The mechanic used mice to set the rivets along the closed section of the wing skin where a bucking bar wouldn't fit.
Example Sentence 2
Mechanics removed the interior panels after mice had chewed through several wire bundles behind the instrument panel.