ested or reconditioned at specified intervals of time (hours, cycles or calendar) in order to ensure continued airworthiness. Not the same as Item, Life-Limited, listed separately. LIFE, ECONOMIC USEFUL: As it pertains to an aircraft or engine, the economic useful life is the period of time over which it is

s approximately $3,500. This FAA Part 135 Regulation Log Research is limited to the collection of pertinent parts tracking documents associated with Life-Limited or otherwise tracked serialized components, which are currently, installed on the aircraft from the aircraft historical records files supplied by th

d manuals to verify currency of each. Verification of status of inspections as currently recommended by the manufacturer. Verification of status of Life-Limited pans. Ainvonhiness Directives, and Mandatory Service Bulletins. Review of supplied FAA Form 337s to verify associated ICAs are available and that re