The C90, B200, and 350 together make up the most-produced twin turboprop line ever built. It is what a company buys when a piston twin has stopped being enough and a jet is still too much. The operating economics have nothing in common with piston singles, and the fixed side of the budget dominates.
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Public manufacturer and POH figures, rounded to what owners see in practice. Your airframe will differ.
Engine
Pratt & Whitney PT6A
variant by model
Fuel burn
70–100 gph
both engines, Jet-A
Cruise
230–290 KTAS
by model
Useful load
2,500–4,000+ lbs
by model
Seats
6–13
by model
TBO
3,000–3,600 hrs
hot section; 6,000–7,200 overhaul
Starting numbers for a Beechcraft King Air, with the two figures that vary most between owners left editable. Change either one and the totals update.
Use your own numbers
Fuel and hangar vary more between owners than anything else. The rest holds at the Beechcraft King Air baseline.
At 85 gph, that is $510.00 an hour in fuel.
$2,000 a month.
$103,000
Hangar, insurance, annual, reserves
Typical range $80,000–$200,000+
$888
Fuel, oil, maintenance reserve
Typical range $700–$1,300
$1,231
Fixed plus variable, at 300 hrs/year
Typical range $1,200–$2,500
How Beechcraft King Air owners usually split the airplane. Each one changes the cost math, the scheduling problem, and what needs to be written into the agreement.
Part 91 corporate
A single-aircraft flight department attached to one operating company.
Part 135 charter
On-demand operators running King Airs on regional and Caribbean legs.
Owner-pilot
Type-rated owners flying their own airplane, with or without a second pilot depending on the policy.
Items that come up on this type specifically. Worth having in hand at a pre-buy and at every annual.
Inspections, squawks, flight logs, per-owner hours, and expenses in one place. Starts at $9/month for one aircraft, with a 30-day free trial and no credit card.