The Flying Doctors (1986) : 5x19

Nick and his friend Shane works for mr. Logan. Nick hurts his chest and Tom says he needs to rest for 10 days. Mr. Logan doesn't except that and to keep his job Nick keeps working. But one day he feels really bad, and mr. Logan says he'll drive Nick and Shane to town. In the car they start arguing, and mr. Logan dumps the two of them in the middle of nowhere. Nick is now unconscious. Mr. Logan's wife, Maria, suspects something is wrong and takes a car and goes after them. She can't drive well, and gets lost. Nick and Shane gets a ride to the nearest property where the Nomad picks them up. He needs immediate surgery, but will be all right. A search for Maria is organized and she is found in one piece!