On Nov 20, 2:25*pm, aerodyne wrote:
That's direct fuel cost. *The non-fuel costs are also driven by the price of fuel - but indirectly as pass thru.

OK - so the Pawnee D does not have the STC - what about all the
earlier models made 20 years or so prior? *The bulk of the fleet I'd
wager.

Insurance, maintenance, and hanger rent driven proportionaly by fuel
cost? *I doubt that. *Show me the numbers!

Re Numbers:
Yesterday in NV, mom & pop commercial FBO. One of ths launches in 15kt
wind to 1,900 ft agl, ASK21, two pilots, one winch driver, (busy
grandmother of 12), one $10,000 winch, 28 ounces of premium gas equals
$1 fuel costs. (And who needs a wing runner on a paved runway?) Get
with the program USA. The Germans have been doing it since the
1930's. The little UK still does more flights than we do per airport.
Karen Henderson.