Air Commerce Act of 1926
Legislation that established federal control over civil aviation and mandated safety regulations.
Airmail Act of 1930
Act that changed the method of awarding mail contracts based on aircraft payload rather than a flat rate.
Civil Aeronautics Act of 1938
Legislation that transferred aviation responsibilities to the Civil Aeronautics Authority and regulated airline fares and routes.
Federal Airport Act of 1946
Act that provided federal funding for airport construction and improvements through the Federal Aid Airport Program.
Federal Aviation Act of 1958
Legislation that established the Federal Aviation Administration (FAA) and transferred aviation regulatory authority from the Civil Aeronautics Board.
Federal Aviation Administration (FAA)
Agency responsible for the regulation and oversight of civil aviation in the United States.
Federal Aviation Regulations (FARs)
Rules governing all aviation activities in the United States, prescribed by the FAA.
Flight Hour(s) (FH)
The total flying hours of an aircraft.
Flight Cycle(s) (FC)
A complete sequence of take-off and landing for an aircraft.
Airworthy
Condition of an aircraft that ensures safe flight operations.
Check (CHK)
Task performed to ensure a system or component is serviceable.
Life limit
Specified time after which an item must be removed from service.
Discard (DIS)
Removal from service of an item at its specified life limit.
Maintenance Task
Actions required to maintain or restore an item to serviceable condition.
Aircraft On Ground (AOG)
A plane with a serious maintenance issue preventing takeoff.
Line Maintenance
Minor maintenance performed on aircraft, either scheduled or unscheduled.
Base Maintenance
Maintenance work conducted in a hangar with specialized tools and equipment.
Field Maintenance
Line maintenance performed at various locations.
Repeat Interval
Maximum time allowed between the completion of a maintenance task and its next occurrence.
Restoration (RST)
Actions necessary to return an item to a specific standard.
Threshold
Deadline for completing tasks that are not performed on a sampling basis.
Lubrication (LUB)
Application of lubricants to maintain the operational capabilities of an item.