Rumours, legends and things people swear are true
Every private-jet story you have heard at a dinner party — the gold-plated 747, the $3,000 biscuits, the jet that outclimbs a fighter — checked, and labelled honestly.
“A private jet needs a runway of at least 10,000 feet.”
Most business jets can use runways of 3,500–5,500 ft at typical weights, and turboprops and light jets go shorter still. A 10,000 ft runway is what a fully loaded widebody airliner needs on a hot day. Even the biggest business jets — Global 7500, G700 — quote balanced field lengths under 6,000 ft. Whole point of a private jet is landing at the small airport near where you're going.
“Private jets pay no tax — the owners write everything off.”
Private jets pay plenty of tax: sales or VAT on purchase (unless structured to avoid it), fuel duty or excise, landing and navigation charges, and in the US a federal excise tax on charter flights. What is true is that business use is deductible, and some jurisdictions and US rules — notably 100% bonus depreciation — let owners write off the purchase price quickly. That is a tax *incentive*, and a controversial one, not an exemption.
“The pilots' salaries are the biggest cost of running a jet.”
Crew is a large fixed cost — two captains on a large-cabin jet can cost $400,000–$600,000 a year with benefits and training — but for any aircraft flown regularly it is outrun by fuel, and over the life of the aircraft by depreciation and maintenance. Crew becomes the biggest line only on a jet that hardly flies, in which case the real biggest cost is owning a jet that hardly flies.
“There are no seat-belt rules on a private jet — you can wander around the whole flight.”
Seat belts are required by law for take-off, landing and whenever the captain says so, on private jets exactly as on airliners. Every certified seat has one, including the ones on divans and beds. What differs is enforcement style: nobody makes an announcement, the cabin attendant (if there is one) asks politely, and in smooth cruise you are free to move about. Pilots take unbelted passengers seriously because turbulence injuries on small jets are real.
“Private jets already run on sustainable aviation fuel.”
Sustainable aviation fuel (SAF) is real, certified for use in every business jet at blends of up to 50%, and available at a growing number of airports. But it was about 0.6–0.7% of global jet fuel in 2025, and business aviation's share is not obviously higher than airlines'. Most 'flies on SAF' claims are book-and-claim certificates — paying for SAF to be used somewhere — rather than SAF in the tank. Widely *available* in principle; widely *used*, no.