From now until March 29, 2005, business aircraft operators, including those that fly overseas–even if only occasionally–will be required to have a number of additional, and possibly expensive, avionics and other communications, navigation and surveillance (CNS) equipment. This equipment is intended to provide enhanced CNS capabilities for both operators and ATC. Operators without the required boxes face ATC handling and airspace restrictions, particularly in Europe.
For some older aircraft, the required equipment will be especially costly, both in pricing and downtime. These aircraft will have to undergo modifications to bring them up to the technical level that will permit the equipment to work, and have the installation FAA approved. In the case of some older aircraft, such as the Sabreliner, OEMs have stepped up to the plate to offer upgrade programs. For others, mod shops, such as Duncan Aviation, are obtaining STCs and Form 337 approvals for various aircraft models.