No experience, but I would think the forecast would be quite difficult to come by? If you knew the mean time between failure (and the variation) you might be able to estimate based on sales. Alternatively you would have to build it up based on experience.
If you have 'recommended service intervals' then some database of sales date and item details would provide you with forecasts of when services will become due, but depends on what choices your customers have for where they get the work done done.
Do you have a specific problem to solve?
John Hardwick
FIOM
Sales & Ops Mgt in Asset Mgt
03 Jun 2008, 20:35