Does any one know how often the tyres on a plane are used before they are changed again?
Answers:
On a fighter jet, they can last to 20-80 landings.
On a commercial airplane like a 737, they usually get changed when the 2 central grooves have disappeared on more than 10 cm or when the tyre gets damaged. Tyres rarely last more than 800 cycles (T-O and landing) before they get revised.
See: http://www.ihsaviation.com/ac/20-97b.pdf.
I'm not sure about tyres but I once went out with an aircraft mechanic who told me that very often he would be halfway through tightening up bolts on a passenger plane when he had to stop what he was doing as the plane had to leave immediately! He said he often used to just keep his fingers crossed that the bolts didn't come loose during flight! It was just luck half the time that there were no accidents from this. Planes have to leave on time and thats that!
Just like with your car, when the tire reaches a certain level of wear. Again, just like your car, that will depend on how much you use the plane. Airliners and military planes used daily change tires more often than privately owned planes. The 800 cycles mentioned by the young lady above is about right, assuming no "road hazard" damage. We change the tires on our plane about once a year.
each aircraft tire has a designated service life but if it shows signs of excessive wear, structural breakdown or dry rot it must be changed immedately to avoid a catostrophic failure. These criteria are subjective.
When I was working on tires the f18 got around 40 take offs and landings
Depends on the aircraft. On Jaguars (see pic) they're changed if the tread is worn away, if they get contaminated with fuel (damages rubber) or if they're under-inflated (undue stress). Generally, it's about once a month.
The answers post by the user, for information only, UKQnA.com does not guarantee the right.