When ferrying smaller aircraft, long range fuel tanks, also known as ferry tanks, are often fitted to increase the aircraft's range. Single engine aircraft fitted with ferry tanks are capable of flying for up to 17 hours on Pacific legs, and non-stop across the Atlantic (depending, of course on the aircraft itself and the ferry tank capacity). Transport category aircraft and business jets are somewhat easier to ferry than smaller aircraft. Amongst the factors contributing to this are higher range, better cockpit conditions and higher cruise speed when maximising distance covered with respect to fuel consumed.
The United States Federal Aviation Administration has recently made it difficult, and in some regions impossible, to get permits to fly planes fitted with long range tanks. This could be expected to affect the economics of ferry flying, as shorter ranges constrain the routes that pilots may fly in ferrying a plane.