On a transatlantic flight with Mrs Ropey (who is a Doctor) on a Delta flight when the call came.
Duty called and she ended up giving a 40 min private consultation to a business class pax (luckily not a trauma type case). Afterwards we returned to cattle class and carried on with the flight.
Wasn't expecting a huge amount in return, but a thank you letter would have been nice - as it was all that happened afterwards (on the flight) was that she asked for a glass of wine and they charged her $4!

(Wonder what a 40 min private consult costs in the US).
With the threat of litigation I'm surprised many doctors come forward at all!
RP