Definition
Smooth, shaped covers or housings fitted over exposed structural components of an aircraft — such as landing gear legs, wing-fuselage junctions, antennas, or flap tracks — to reduce form drag by allowing air to flow around them more cleanly.
Plain English
Streamlined coverings added to bumpy or exposed parts of the airplane so the air slides past them instead of crashing into them.
Context Anchor
Seen in discussions of aircraft drag, aircraft exterior design, and preflight checks of covers around items such as landing gear, wheels, antennas, or surface joints.
Derivation
From the English verb 'to fair,' meaning to make smooth or even. A fairing is something that 'fairs over' a rough or angular shape so the airflow stays attached and orderly.
Why Pilots Care
Proper fairing parts lower total drag, improve climb and cruise performance, and reduce fuel consumption.
Intuition Check
Do not read “fairing” as “fair” meaning equal or acceptable. A fairing part is a smooth aircraft piece used to clean up airflow around a less smooth shape.
Example Sentence 1
During preflight, the pilot noticed a crack in the fairing covering the main landing gear leg and wrote it up before the flight.
Example Sentence 2
During the preflight the pilot checked the fairing parts for cracks that could disturb airflow and increase drag.