Plain English Meaning

The shaped covers that wrap around the engine. They smooth the airflow over the engine area and channel cooling air to where the engine needs it.

Full Definition

The removable metal or composite panels that enclose and streamline the engine compartment of an aircraft, providing aerodynamic shaping while directing cooling airflow around the engine and protecting it from the elements.

Context Anchor

You will encounter cowlings during preflight inspection, oil checks, engine-area inspections, and preventive maintenance that involves removing or reinstalling engine covers.

Derivation

From the old word 'cowl,' meaning a hood worn over the head and shoulders by monks. The engine 'cowling' covers the engine the same way a cowl covers a head — wrapped around it for protection and shaping.