HASELL

In aviation, in Australia, Canada, New Zealand, South Africa, the United Kingdom and elsewhere, HASELL or alternatively HASEL, is a standard mnemonic to prompt a series of checks prior to carrying out many types of manoeuvres, such as stalls, spins, spiral dives or aerobatics.

The HASEL acronym stands for:
 * Height
 * Area
 * Security
 * Engine
 * Lookout

or alternatively:
 * Height
 * Airframe
 * Security
 * Engine
 * Location
 * Lookout

HASELL is often abbreviated to HELL for any subsequent manoeuvres.

The Area or Location check can be broken down into the following checks with the mnemonic  ABCCD:


 * Active airfields
 * Built up areas
 * Cloud
 * Controlled airspace
 * Danger areas