There is lot of difference between test flight/air test/first flight.
Flying hours are the number of hours that an aircraft has flown (usually from engine start to engine stop). One flight cycle is one flight from take-off to landing.
OEW = DOEW + Catering Allowance + Flight attendents
Aircraft is a general term for anything that is capable of flight. This could include fixed-wing, helicopters, gliders, blimps, gyro copters, gyro planes, and balloons. Airplane typically refers to fixed-wing aircraft, but technically means anything with wings that is capable of flight.
The word aircraft - refers to any vehicle capable of flight - of which are hovercraft, gliders, planes and helicopters. The word airplane - relates only to fixed-wing aircraft.
A KC-130 has been produced for refueling other aircraft while in flight. The C-130 is a cargo plane.
An airmiss is a narrow miss between two aircraft in flight.
In flight, lift is the aerodynamic force that acts perpendicular to the direction of airflow around an aircraft's wings. It is generated primarily by the difference in air pressure above and below the wings, caused by their shape and angle of attack. Lift must overcome the weight of the aircraft for it to ascend, and it is crucial for maintaining altitude during flight. The balance between lift, weight, thrust, and drag determines the aircraft's performance and maneuverability.
The previous flight status of the aircraft was delayed.
Louis V. Schmidt has written: 'Introduction to aircraft flight dynamics' -- subject(s): Aerodynamics, Stability of airplanes
60 feet
An assault ship with a flight deck may resemble an aircraft carrier, but its purpose is to deliver marines and their equipment for amphibious attacks. Many navies use assault ships, but not all of them have a flight deck. An assault ship with its own flight facilities spares the aircraft carriers from the task of carrying marine air support. An assault ship cannot operate the high-performance combat aircraft that an aircraft carrier has, but it does not need them for the job it does. An assault ship does not fight enemy ships at sea. Its purpose is to land on an enemy shore and hold it until reinforcements arrive.
In aviation, a flight engineer is a member of the aircrew of an aircraft who is responsible for checking the aircraft before and after each flight, and for monitoring and operating aircraft systems during flight. The flight engineer usually has a background in aircraft maintenance and may reasonably be described as the "technical expert" member of the operating crew.