UPGRADING OLDER AIRCRAFTBetter Avionics
Upgrading an older aircraft can be one way of enhancing performance or functionality while delaying the costs associated with replacing the aircraft. Even so, the costs can be substantial and the may outweigh the benefits.
Upgrades are different from conversions. An upgrade enhances what is already there while a conversion results in major changes to the systems or design of the aircraft hopefully improving the aircraft substantially. Replacing the engines with newer, different engines such as Honeywell has done with the Falcon 20 and Falcon 50 would be a conversion. Adding an aft fuselage baggage locker to a Lear is an upgrade.