Aero-Terms!

Aero-Terms are designed to be a daily reminder of the terms, names, acronyms and explanations of the unique language that populates the aviation world. Aerospace, sport aviation, fixed wing, helo, you name it... it's all fair game.

Aero-Terms should serve as a quick but intriguing reminder of the terms you may use every day, or an introduction to an aspects of the Aero-World you may not yet be familiar with. ANN also encourages readers to go beyond the FMI link, and further research any intriguing terms.

Suggestions for future Aero-Terms are ALWAYS welcome, as are additions or discussion of the explanations given for each Aero-Term.

Night

The aviation definition of the term Night has a significant Regulatory impact on aviation and worldwide aircraft operations.

The FAA defines "Night" as the time between the end of evening civil twilight and the beginning of morning civil twilight, as published in the American Air Almanac, converted to local time.

Many international regulations and standards apply specifically to aviation operations  conducted at night or differentiate between operations permitted by day and those permitted at night.

In certain circumstances both pilots and the operation of specific aircraft may be restricted to day only operations.

FMI: http://aviationglossary.com/night/