aviation Aviation includes the activities surrounding mechanical flight and the aircraft industry. ''Aircraft'' includes fixed-wing and rotary-wing types, morphable wings, wing-less lifting bodies, as well as lighter-than-air craft such as hot air ...

, in

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Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...

, the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

and elsewhere, HASELL or alternatively HASEL, is a standard

mnemonic A mnemonic ( ) device, or memory device, is any learning technique that aids information retention or retrieval (remembering) in the human memory for better understanding. Mnemonics make use of elaborative encoding, retrieval cues, and imag ...

to prompt a series of checks prior to carrying out many types of manoeuvres, such as stalls,

spin Spin or spinning most often refers to: * Spinning (textiles), the creation of yarn or thread by twisting fibers together, traditionally by hand spinning * Spin, the rotation of an object around a central axis * Spin (propaganda), an intentionally b ...

s, spiral dives or

aerobatics Aerobatics is the practice of flying maneuvers involving aircraft attitudes that are not used in conventional passenger-carrying flights. The term is a portmanteau of "aerial" and "acrobatics". Aerobatics are performed in aeroplanes and glid ...

.Kaiser, John W.: ''How to Fly Book - Cessna 150'', page 37. Victoria Flying Club, 1977. The HASEL acronym stands for: *Height *Area *Security *Engine *Lookout or alternatively:CAA NZ Flight Instructor Guide: Basic Stalling
Retrieved 14 December 2011Jeremy M. Pratt: PPL Volume 1, Flying Training *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

References

{{Aviation mnemonics Aviation mnemonics