Professor Rigas Doganis, visiting professor at the UK's College of Aeonautics at Cranfield University, said new aircraft types tended to experience teething problems.
We've got three different aircraft types that we're actively looking at.
In addition, U.S. allies provided approximately 136 aircraft of all types.
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"The A380 will be an important aircraft for Heathrow... but we are also ensuring that our new facilities can accommodate all types of aircraft and meet the needs of all our airlines, " he said.
Simultaneously merging two different types of aircraft in one fleet could leave it seriously short of oxygen.
This reduces the number of different types of aircraft operated by the Defense Department and their associated life-cycle costs.
The US proposal will give foreign investors more of a say in the marketing of airlines, flight routes and types of aircraft operated.
India can arm two types of aircraft to do this: the MiG-27 Flogger, which was made by the old Soviet Union, and the Jaguar, which was used in a nuclear role by the British and French air forces.
Other types of unmanned aircraft systems need FAA approval, according to the agency.
The Civil Aviation Authority (CAA) banned similar types of the aircraft from flying over water - but other versions were allowed to resume flights on Friday.
Despite defence-spending increases, French military types complain about the lack of transport aircraft and the shoddy state of the helicopter fleet.
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He was in protection, traveling to and fro, finding himself in many different types of places at the drop of a dime, including aircraft carriers.
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