Definition
A short length of soft wire used to attach an identification tag to an aircraft part, assembly, or component during maintenance, storage, or shipping. Tag wire is typically thin steel or copper wire that can be threaded through a hole in the part and the tag, then twisted closed to keep the tag secured to the item it identifies.
Plain English
A small piece of wire used to tie a label onto an aircraft part so it stays with the part and can be identified later.
Context Anchor
Seen in aircraft maintenance work when parts or wires are removed, inspected, stored, or marked for later installation.
Derivation
From 'tag' (a small label attached to something for identification) and 'wire' (the material used to fasten it). The name simply describes what the wire is for: holding tags in place.
Why Pilots Care
Loose fasteners can cause control-surface failure, engine damage, or loss of critical systems; proper tag-wire security is required for airworthiness.
Analogy
It works like the string on a luggage tag: the tag gives the information, and the wire keeps the tag attached to the item.
Intuition Check
Tag wire is not the aircraft wire being tested or powered. It is the wire used to hold an identification tag onto something.
Example Sentence 1
The mechanic removed the magneto, attached a 'repair required' tag with tag wire, and placed it on the parts shelf.
Example Sentence 2
Each removed inspection panel carried a small tag secured with tag wire showing the work order number.