Chopper One

In reference to the comments made by "triciapurvis". Apparently you are getting this show confused with a different show that came out years later.

Joanna Cassiday starred with Mark Harmon and John Bennett Perry in "240:Robert", and action-show quite similar to "Emergency!" that ran from 1979 through 1980. There were a couple of episodes where a chopper figured prominently in this show with Ms. Cassiday involved in the chopper, so maybe that is the source of your confusion.

"Chopper One" most definitely did NOT have Joanna Cassiday in it, nor was there a third person starring as one of the chopper pilots in the show.

At any rate, for fans of these type shows, they were both somewhat enjoyable.