Definição da Lista Mínima de Equipamentos Mestres de Lista Mínima de Equipamentos Mínimos da ICAO / Mínimo Manual de política e procedimentos de lista de equipamentos :
“Master Minimum Equipment List” means a document approved by the Director General that establishes the aircraft equipment allowed to be inoperative under conditions specified therein for a specific type of aircraft.
A Master Minimum Equipment List (MMEL) is an approved document created specifically to regulate the dispatch of an aircraft type with inoperative equipment. It establishes the aircraft equipment allowed to be inoperative under certain conditions for a specific type of aircraft and still provide an acceptable level of safety. The MMEL contains the conditions, limitations and procedures required for operating the aircraft with these items inoperative. The MMEL forms the basis for development and review of an individual operator's Minimum equipment List (MEL).
Definição da lista de equipamentos mínimos do mesmo documento:
“Minimum Equipment List” means a document approved by the Director General that authorizes an operator to dispatch an aircraft with aircraft equipment inoperative under the conditions specified therein.
e
The MEL is a joint operations and maintenance document prepared for or by an operator to:
a) identify the minimum equipment and conditions for an aircraft to maintain the Certificate of Airworthiness in force and to meet the operating rules for the type of operation;
b) define operational procedures necessary to maintain the required level of safety and to deal with inoperative equipment; and
c) define maintenance procedures necessary to maintain the required level of safety and procedures necessary to secure any inoperative equipment.
As autoridades reguladoras usam definições semelhantes. Por exemplo, Transport Canada usa quase a mesma definição, substituindo 'Diretor Geral' com 'ministro'. Assim, a definição ICAO pode ser usada como base.
Tipos de Lista de Equipamentos de Operação (KOEL) são listas encontradas em POH de uma aeronave que indicam qual equipamento (geralmente opcional) é necessário para o vôo sob certas condições. De circular Requisitos mínimos de equipamento para operações de aviação geral no PARTE 91 AC NO: 91-67:
Kinds of Operations List (KOL). The KOL specifies the kinds of operations (e.g., visual flight rules (VFR), instrument flight rules (IFR), day, or night) in which the aircraft can be operated. The KOL also indicates the installed equipment that may affect any operating limitation. Although the certification rules require this information, there is no standard format; consequently, the manufacturer may furnish it in various ways.