Keep it simple. No idea what anyone would be doing at 7000ft in a R22!
In the event of an electrical fire, im with jtobias on this one, Get it on the deck ASAP,
exit the aircraft,
leave it to burn,
claim on the insurance
laugh all the way to the bank
Failing that you could always do what it says in the pilots operating handbook.
Master off
Alt switch off
Open vents
Land immediatelly
extinquish fire "WHEN ON GROUND" not in flight as was suggested earlier. One pilot on board at the controls, trying to put out fire with extinguisher while maintaining autorotation!!! Dont think so.
HJ