Reliability
The probability that an item will perform a required function, under specified conditions, without failure, for a specified period of time.
Reliability Programme
A programme for aircraft, aircraft engine and aircraft component reliability based on maintenance statistics.
Repair
Means the restoration of an aircraft, aircraft engine or aircraft component to a serviceable condition and in conformity with an approved standard.
Repair Station Certificate
Certificate issued by an NAA.
Equivalent Terms: Approved Maintenance Organisation, AMO Required Navigation Performance (RNP)
A statement of the navigation performance necessary for operation of an aircraft within a defined airspace.
Note: Navigation performance and requirements are defined for a particular RNP type and/or application.
Resource Management
The effective use of all the resources available to personnel, including each other, to achieve a safe and efficient outcome.
See Crew Resource Management.
Rest Period
Any period of time on the ground during which a crew member is relieved of all duties by the Operator. Equivalent Terms: Crew Rest
Risk
The possibility of danger, loss, injury, or other adverse outcome(s) associated with a hazard, typically expressed in terms of the severity of such outcome, and the likelihood it could occur.
Route and Aerodrome Manual
A separate manual or a part of the operations manual, acceptable to the State, containing, for each route segment, the relevant information relating to communication facilities, navigation aids, aerodromes, instrument approaches, instrument arrivals and instrument departures as applicable for the operation, and such other information as the operator may deem necessary or the State may require for the proper conduct of flight operations.