One point of clarification to the above. Registration isn't a requirement for warranty validity. The sole determination of whether an item is under warranty is from the date of purchase by the original customer. Having the new owner register is a good idea so that he or she can get updates, technical bulletins, etc about their product(s). But ultimately, original proof-of-purchase is what someone will need to prove that something is under warranty. In practice, we're pretty generous about warranty terms: Unlike most companies we do allow them to transfer to subsequent owners, but the date of original purchase is still the start of the warranty period. Ultimately, make sure that the new owner has a way to prove the original purchase date. A receipt/invoice/etc from the Dynon dealer the products were purchased from, or our invoice if purchased directly, are sufficient for this purpose. In the absence of any proof-of-purchase, we'll use the date something shipped from the factory. But this doesn't always reflect the purchase date to the end customer, as something may sit in dealer inventory for a time before being sold.
