Air Canada Ad, with Pratt & Whitney (1970s)

“A shop visit rate of only 0.35 per thousand hour. That’s the kind of dependability we get from our JT9D wide-body engines.”

“We’ll take part of the credit because we’ve done everything right on planned maintenance, engine rotation and design modifications. But the inherent reliability of the engine has a lot to do with it too. Not only is our unscheduled engine removal rate extremely low, we’ve got two engines that have spent over 10,000 hours on the wing.”

Lyle Rarely, Sr. VP, Technical Services, Air Canada