Quality Systems
The total network of administrative and detailed procedures, which is implemented to ensure all operations and maintenance activities satisfy the customer's requirement and the documentation accurately reflects the criteria used to perform the maintenance.
Quarantine
Quarantine indicates that a part or material has not been declared serviceable and is subject to investigation or further action.
Quarantine Area
An area set aside for holding parts or materials pending investigation or further action.
The area must be clearly defined and secured, preventing the removal of parts or materials until the investigation or further action has been completed.

R
RNAV
See Area Navigation (RNAV).
RVSM
Reduced Vertical Separation Minima. Approval for a ‘specific’ vertical separation between flying aircraft. Equivalent Terms: Separation
Radio Operator
A member of the flight crew who holds a valid licence, issued or rendered valid by the State of Registry, authorising operation of the type of radio transmitting equipment to be used.
Radiography Inspection
A non-destructive testing method involving Radiography (Xray) techniques. Equivalent Terms: Xray