As in many facets of aviation, Fuel Planning has a list of specific terms and definitions of its own. The following list identifies the most critical of these terms. Different terms or names for the same concept are often used interchangeably by different regulatory authorities or flight planning organizations. The most common of these variants preface the definitions that follow.
Definitions
Additional Fuel
Additional fuel is fuel which is added to comply with a specific regulatory or company requirement. Examples include ETOPS fuel, fuel required for a remote or island destination where no alternate is available and fuel required to satisfy an Minimum Equipment List (MEL) or Configuration Deviation List performance penalty.