TCI - Time Change Items
It is an acronym of recent use that is ex-military and or has come from translation to English.
Part of Chapter 4 Airworthiness Limitations -
Chapter 04, “Airworthiness Limitations”, states life limits of time change items, airworthiness limitations
Procedure:
The relevant component must be removed from the helicopter no later than end of life limit. It must either be destroyed or marked in such a conspicuous way as to exclude any, even inadvertent, continuing use.
Life limit must not be exceeded.
When new or used time change items are installed, the nomenclature, part number, serial number and, if applicable, current operating hours must be recorded in the historical record for the helicopter or the component.
i.e. Finite Life which may be flight hours, cycles, calendar time, RINs blah blah and/or a combination.
Chapter 5 -
Sections containing the time limits for the scheduled inspections. The scheduled inspections must be accomplished after the corresponding operating time of the helicopter has been reached at the latest.
This section will contain fluid change periods, lubrication, overhaul periods, and storage lives and conditional inspections such as inspections which must be accomplished either before the next light or in set time intervals after certain operational incidents have occurred, inspections which must be accomplished after accomplishment of certain maintenance measures and inspections which must be accomplished after the aircraft has been operated under special environmental conditions for a longer period of time.
To find the information that you are looking for ask for the component log card.