Definition
A flat, plastic-coated lacing tape used to bundle and secure groups of electrical wires into neat, organized harnesses inside an aircraft. It is wrapped and tied at intervals along the wire bundle to hold the wires together, prevent chafing, and keep the harness routed cleanly along the airframe.
Plain English
A flat plastic ribbon used to tie aircraft wires together into a tidy bundle, knotted at regular spacings so the wires stay grouped and don't flop around.
Context Anchor
Seen in aircraft wiring installation and maintenance, especially when securing groups of wires behind panels, in equipment bays, or along a structure.
Derivation
Koroseal is a brand name for a flexible vinyl (PVC) material developed by B.F. Goodrich in the 1930s. 'Lacing' comes from the Old French 'laz,' meaning a cord or tie -- the same root as 'lace' in shoes. The name reflects exactly what it is: a Koroseal-material cord used to lace wires together.
Why Pilots Care
Properly laced bundles prevent wire damage that can lead to electrical failures or fires.
Analogy
Think of it like the cord used to tie up a bundle of cables behind a desk -- but flat, tougher, and tied at regular intervals so the bundle holds its shape.
Intuition Check
Do not think of lacing here as tying shoes or sewing fabric. In aircraft maintenance, lacing means securing a group of wires with approved tie material.
Example Sentence 1
The technician used Koroseal lacing to secure the wire bundle running behind the instrument panel.
Example Sentence 2
During the inspection, each wire run secured with Koroseal lacing was checked for proper tension and wear.