Time Life ItemsWritten by Chuck Clapper
September 2004 -
Only big airplanes with jet engines have to worry about replacing things on a calendar or time in service basis. None of that applies to my airplane, or does it?
We all know that transport airplanes have to change landing gear, and starters, and engine components and many other components on a time table that is based on time the component has been in service, not the condition of the component.
The selection of what is on these time life lists is made during the certification of the aircraft, and sometimes items are added from service history of the aircraft. The time specified can be changed either up or down using the service history and some operators have different service times because of their specific maintenance history... The intention of imposing time life limits on some components is to improve reliability and safety of the aircraft by changing/overhauling components before they fail and cause a potential problem.