The Flying Doctors (1986) : 7x2

During a clinicround there are reports of small fires, which eventually turns out to be one huge fire! Geoff goes out there, but burns his hands and is replaced by David. He attends a family where the woman is seriously ill. They manage to get her to hospital, but she needs major surgery in Sydney. There's no time to fly her there, and Geoff can't operate, so David has to do it! The operation is a success!