What is the difference between aircraft flight hours and flight cycles??

Question

What is the difference between aircraft flight hours and flight cycles??

Answer 1

Nope, answer no. 2 is not correct. An aircraft cycle is one startup, one warm up, one takeoff, one landing, one cool down and one shutdown. Landings are recorded separately and takeoffs are not recorded. Wouldn't need to would you.

An aircraft hour can be one of two things depending on you're measuring for maintenance or duty time. A maintenance hour is measured from takeoff to touch down. A duty hour when computing pilot flight time is measured from taxi out to taxi in.

Answer 2

The difference between flight hours and flight cycles is that "flight hours" is the amount of time a particular aircraft spends in the air from the moment it's wheels leave the runway to the moment it touches down on the same or a different runway. Flight cycles are the amount of takeoffs and landings that particular aircraft performs. One flight cycle is defined as one takeoff AND one landing... Not one or the other.

Answer 3

the answerer no 2. is correct. Flight cycle is 1 take off+ 1 landing.

AFH- Aircraft Flight hours is the blocks on time meaning plane airborne till landing ( some even include chocks on for pilot flying hours payment purposes.)

Most aircraft parts including engines are counted both flying hours and flight cycles say ex. 5000 hrs or 3000 flight cycle whichever comes first the engine is due for overhaul and must be replaced. Technical Records which are usually under the quality system of an airline do this job recording for aircraft A, B , C&D checks.

Answer 4

Simply, a cycle is a flight (takeoff and landing) .  If you land and takeoff again without turning the engines off they next flight would count as the next cycle.

Flight hours are times the aircraft is in service.  Some airlines count this from wheels up to wheels down and some count it from engines startup to engine shutdown.

Hope this helps answer your question.

Answer 5

A cycle is one takeoff and one landing. One purpose for measuring the number of cycles is for pressure vessel (and pressurization system) stresses---the number of times the cabin has pressurized (assuming the airplane flies high enough each cycle). And, for example, the number of times the airframe has been subjected to the temperature variations associated with flight. It is significant for engine life/wear, as well, to some extent. (On jets I fly, the engines are rated for max takeoff thrust for 5 minutes in normal conditions, for example.) Anyway, that's what a cycle is---one takeoff, one landing, regardless of hours flown.