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:

or alternatively:

HASELL is often abbreviated to HELL for any subsequent manoeuvres.