Definition
A protective tube, channel, or duct used to route and shield electrical wires, fluid lines, or control cables as they pass through an aircraft structure. Conduit guards the contents from chafing, vibration, heat, and physical damage, and provides a defined path through bulkheads, firewalls, and confined spaces.
Plain English
A hollow tube that wires or lines run through to keep them protected and tidy as they travel through the aircraft.
Context Anchor
Seen in aircraft maintenance, wiring installation, inspection notes, and system routing descriptions.
Derivation
From the Latin conducere, meaning 'to lead together.' A conduit is literally something that leads things along a path -- in aviation, it leads wires or lines safely from one place to another.
Why Pilots Care
Damaged conduit can allow wires to chafe, causing electrical shorts or failures in critical systems such as navigation and radios.
Analogy
A conduit is like a protective sleeve or tunnel. It gives the wire or line a safe route instead of leaving it exposed.
Intuition Check
Do not think of a conduit as the wire or line itself. The conduit is the protected path or covering that the wire, cable, air, or fluid passes through.
Example Sentence 1
The mechanic replaced a section of conduit where the wiring bundle had begun to chafe against the airframe.
Example Sentence 2
During the preflight inspection the pilot noticed a dent in the conduit near the battery compartment.