Originally Posted by
rotorfun
A side note/comment reading the link in Bell 505 maintenance thread is this RIN concept. I guess it is like cycles/landings.
The RIN concept explained: Retirement Index Number is tracked along with starts, cycles and landings. Each component will have a number at which point it gets retired. The formula for working out RIN count is different for each aircraft and in some instances a compnent's RIN maybe calculated by multiplying the aircraft RIN # by a certain number. As an example the formula for calculating RIN's on a Bell 206L4 with TRACs is to take landing, add lift cycles and multiply by 2.