How Exposed Is Business Aviation to the Next Downturn?

That is the right question to ask now, and the data Koe presented sets it up well. What follows is my reading of it, not theirs.

The Market Today Looks Fine. That Is the Problem With the Question.

Business jet departures are running 3.6% ahead of 2025 year to date, and 36.9% ahead of 2019. The fleet is 25.8% larger than in 2019 and each aircraft is flying 10.6% more hours. By any operating measure this is a healthy market.

But nearly all of that growth is coming from access rather than ownership. Fractional departures are up 9.9% against 2025 and charter up 4.3%, while owner-flown Part 91 activity is up just 0.6%. The segment doing the work is the one where customers buy hours, not airplanes.

Transactions tell a flatter story. Pre-owned retail sales in the twelve months to August 2026 totaled 2,823 units, 3.5% above the comparable year-earlier window but below the 2,965 recorded in calendar 2025, which was itself 16.8% above 2024. Measured over the first half of 2026 alone, whole-aircraft transactions were down roughly 11% year over year. Both figures are JETNET’s and both are correct. A trailing-twelve-month window still contains a strong second half of 2025, so it reads positive while the recent six months do not.

Two supporting numbers matter more than either. Days to sell for jets built in 2020 or later now runs about 105, up from 72 in 2022. And 6.6% of the fleet is listed for sale, against 7.3% a year ago, where 9 to 10% would signal a buyer’s market.

Read together: fewer aircraft available, taking longer to sell. That is not a soft market. It is a market where buyers have become deliberate.

What the Last Downturn Actually Did

The global financial crisis is the only recent stress test we have, and its lesson is uncomfortable for anyone assuming the pain is evenly shared.

Peak to trough, light jet production fell 37.6% and midsize production fell 42.7%. Heavy jet production fell 14.8%. The bottom of the market absorbed roughly three times the damage of the top.

On the flying side the ranking was different and, today, more relevant. Comparing 2009 with 2007, fractional activity fell 31%. Corporate flight departments fell 15%. Branded charter fell 8%.

Fractional fell hardest. Fractional is also the segment leading growth today.

The Fractional Paradox

This is the single most important observation available from the data, and it deserves to be stated plainly: the segment carrying the market’s growth right now is the segment with the worst recorded downturn performance.

There are reasonable arguments that this time differs. The fractional product has changed substantially, the customer base is broader, and card and lease structures did not exist at today’s scale in 2007. A fractional share is also a shorter commitment than whole ownership, which cuts both ways. It is easier to enter, and easier to leave.

That last point is the exposure. Access products convert aircraft demand into something closer to discretionary consumer spending. It renews, or it does not. Whole ownership carries inertia: an owner facing a weaker year often keeps the airplane and flies it less. A card holder simply stops buying cards.

If the next downturn resembles the last one in shape rather than severity, the first visible effect would appear in fractional and charter hours, not in transaction counts or asking prices.

What the Demand Actually Rests On

The correlations Koe presented are strong enough to take seriously. Global business jet departures track the global ultra-high-net-worth population at 0.84. U.S. departures track U.S. corporate profits at 0.83. IPO activity leads business jet demand by about three quarters, at 0.60.

None of that will surprise anyone in this business. What makes it matter now is how concentrated the underlying wealth effect has become.

By Moody’s Analytics estimates, the top 10% of U.S. earners accounted for 49.2% of consumer spending in the second quarter of 2025, the highest share in data going back to 1989. An updated figure put the top 20% at roughly 60% of personal outlays in the first quarter of 2026. Those estimates are methodologically contested — the BLS consumer survey puts the top decile’s share far lower — but the direction has been consistent for three decades.

The relevant point is not the exact number. It is that this group’s spending is unusually sensitive to asset prices, because that is where their wealth sits. Mark Zandi’s framing is direct: the economy’s prospects are tethered to the well-to-do, and a stock downturn is the trigger he names.

Business aviation sits at the far end of that chain. If high-end consumption generally tracks equity markets, discretionary private aviation tracks them with amplification.

Which Brings Us to the AI Question

Equity markets in 2026 are historically concentrated, with the ten largest companies representing an outsized share of total market capitalization, driven by AI-related names. UBS has been constructive on AI through 2026, recommending meaningful allocation to the theme while flagging bubble risk, and has noted that the market meets the preconditions for a bubble it does not believe has yet formed. Research houses have also flagged circularity in AI financing, where major players invest in each other’s demand, as an echo of the late 1990s worth monitoring.

Set that next to the correlations above and the exposure becomes legible. If high-end spending follows asset prices, and asset prices are increasingly driven by a narrow group of AI-linked names, then business aviation demand has an indirect but real dependency on the AI capital expenditure cycle.

That is not a prediction. The same concentration has delivered three years of gains, and UBS’s base case remains constructive. But anyone asking how exposed this industry is to the next downturn should understand that the honest answer runs through equity markets, and equity markets currently run through a handful of companies.

What We Would Actually Watch

If you want early warning rather than confirmation, the sequence matters.

Fractional and charter hours. The first segment to move last time, and the one most exposed to discretionary cancellation. Monthly departure data will show it before any transaction report does.

Days to sell. Already drifting from 72 to about 105. A move toward 130 or 140 with inventory still under 7% would signal buyer hesitation rather than oversupply.

Share of fleet for sale. Approaching 9% turns the market.

U.S. corporate profits and IPO issuance. The IPO lead of roughly three quarters is the most useful forward indicator available to a broker.

Light and midsize first. If the crisis pattern repeats, weakness appears at the bottom of the market well before the top.

Our View

Nothing in the current data says a downturn is underway. Flying is up, inventory is tight, and the transaction slowdown is better explained by friction — tariffs, cross-border complexity, deferred decisions — than by absent demand.

What the data does say is that this market’s resilience is more concentrated than it looks. Growth is concentrated in access products that proved most cyclical last time. The wealth funding that demand is concentrated in households whose spending tracks asset prices. And asset prices are concentrated in a narrow set of companies tied to a single investment theme.

Concentration is not fragility. But it does mean that if something breaks, it will likely break faster and in a more specific place than most participants expect. For owners, that argues for the same discipline that has always applied: buy the aircraft that fits the mission, understand your exit before you need it, and treat tax and structure as part of the purchase rather than an afterthought.

The market does not look exposed today. It looks dependent. Those are different things, and the difference matters mostly in how quickly conditions can change.

Joseph Pennella
Penn Jets LLC

Sources

JIQ by JETNET, “How Exposed Is Business Aviation To The Next Downturn,” fireside chat with Richard Koe and Paul Donovan, September 30, 2026. Flight activity, transaction, inventory and historical production figures are JETNET and WINGX data presented in that session, with data through September 27, 2026.

Moody’s Analytics (Mark Zandi), consumer spending by income decile, 2025-2026. UBS Global Wealth Management Chief Investment Office, 2026 outlook and market concentration commentary.

Market commentary only. Not tax, legal or investment advice. Figures attributed to JETNET and JIQ are their data, presented in a public webinar; interpretation and conclusions are our own.