Before you land, everything may have changed hands
Think about the last time you boarded a flight. You found your seat, stowed your bag, and probably gave very little thought to who actually owns the aircraft you’re sitting in. The answer is rarely straightforward – and often surprisingly fascinating.
Most commercial aircraft are not owned by the airlines that fly them. Instead, they are financed through a complex web of investors, lenders, and leasing companies. Consider a typical widebody aircraft crossing the Atlantic. The airframe – the physical body of the aircraft, its fuselage, wings, and structural components – might be owned by one investor. The engines, each of which is a separately monetizable asset in its own right and can be swapped between aircraft, might be owned by entirely different parties. By the time that flight touches down, any one of those ownership interests could have been bought, sold, refinanced, or transferred to a new investor. Aviation finance moves at altitude.
This structure exists because aircraft are extraordinarily expensive. A new long-haul widebody aircraft – such as the Airbus A350 – can cost more than $200 million. Very few airlines have the balance sheet, or the appetite, to purchase and own fleets outright. Instead, they turn to financiers: private equity (PE) investors, traditional bank lenders, capital markets, and in particular, a well-established global industry of aircraft leasing.
The lease: Aviation’s preferred financial engine
At its simplest, an aircraft lease works much like leasing a car. An airline – the lessee – pays a monthly rental rate to a leasing company, the lessor, in exchange for the right to operate the aircraft. The lessor retains ownership and, importantly, the residual value risk (or opportunity). At the end of the lease term, which typically runs for between six and 12 years, the airline is contractually obligated to return the aircraft to the lessor in an agreed-upon condition. These obligations – covering everything from engine condition to the state of the seatbelts and paintwork – are known as the return conditions.
For the leasing company, and for the investors behind it, this model offers something rare in the world of alternative assets: long-duration, contracted cash flows, backed by a hard asset that can be remarketed globally on expiry, whether that is on the maturity of the lease term or earlier if an airline defaults.
Where PE takes its seat
PE and institutional investors have long recognized the appeal of aircraft and aircraft engines as an asset class. Over the past two decades, a significant portion of the global leased fleet has migrated from bank balance sheets and airline-owned fleets into the hands of specialist leasing platforms, many of which are backed by private capital. These platforms acquire aircraft, place them on lease with airlines around the world, and generate returns for their investors through rental income and, ultimately, asset sales.
The investment case is intuitive: Air travel demand has historically grown at roughly twice the rate of global GDP, aircraft are mobile assets deployable across borders, and the lease structure provides a degree of cash flow predictability unusual in private markets. For institutional investors seeking alternatives to traditional fixed income, aircraft leasing has long offered an attractive middle ground.
A tightening market: The curious case of the missing returns
Against this backdrop, something quietly significant has been happening across the global fleet. Aircraft that were due to be returned to lessors at the end of their lease terms are, in growing numbers, not coming back.
Airlines – squeezed by the post-pandemic recovery, surging passenger demand, the lack of readily available maintenance slots, and a significant shortage of new aircraft deliveries – are opting instead to extend their existing leases, often for multiple additional years. Others are exercising purchase options embedded in their lease agreements, acquiring aircraft they had originally intended to hand back. The reason is simple: The two dominant manufacturers of commercial aircraft, Boeing and Airbus, are running years behind on deliveries due to supply chain disruptions, labor shortages, and production bottlenecks. An airline that cannot get a new aircraft cannot afford to give back an old one – and particularly not where they serve a rapidly growing, often emerging-market, clientele.
For leasing companies and their investors, this dynamic is generating a quiet windfall. When an aircraft is extended rather than returned, the lessor avoids the cost and complexity of remarketing – finding a new airline customer, transitioning and reconfiguring the aircraft for the new lessee, and negotiating new lease terms, as well as potentially storing and maintaining the aircraft in the interim. More significantly, the lease extensions are being agreed at rental rates that are, in many cases, materially higher than the original lease rates, reflecting the scarcity of available aircraft in the market. Assets that might have been returned and re-leased at flat or modestly improved rates are instead generating enhanced income with minimal transition friction.
The same dynamic is playing out – perhaps even more acutely – in the engine leasing market. Well-publicized delivery issues, combined with broader serviceability challenges, have left airlines scrambling for spare engines to keep their fleets airborne. With original equipment manufacturers (OEMs) unable to meet demand and maintenance facilities overwhelmed, the value of available serviceable engines has surged. For engine lessors, this has translated into rental rates and asset values that, in some cases, are outpacing even the strong returns being seen in the wider aircraft market – and the sector has attracted a wave of new investors using engine leasing as a stepping stone to build broader aviation portfolios.
What this means for investors
The practical implications for investors in aircraft leasing platforms are meaningful. First, income yields are rising: Lease rates on extensions and new placements are at their highest levels in over a decade for certain aircraft types, particularly narrowbody aircraft such as the Airbus A320 and Boeing 737 families that dominate short- and medium-range travel. Second, asset values have followed suit: Aircraft appraised values have risen as the market absorbs the reality that new supply will remain constrained for years to come. Third, the frequency of aircraft transitions – and the costs and risks associated with them – is falling.
Together, these factors are producing a more favorable return environment than many investors anticipated when they first entered the asset class. Platforms that underwrote conservative assumptions on re-leasing rates are finding market conditions comfortably exceed their base cases. For investors assessing the sector today, the key question is duration: How long will the supply-demand imbalance persist, and at what point will manufacturing capacity recover sufficiently to normalize the market?
Most analysts expect current conditions to endure well into the latter half of this decade. Boeing and Airbus order backlogs stretch to the mid-2030s for some aircraft types, and the pipeline of new capital entering the market, while growing, has not yet meaningfully offset the structural undersupply.
Some of the exposure is further de-risked through what are known as “stub” leases. Here, an original lessor is willing to sell the aircraft and the remaining lease together, allowing a new investor to acquire the asset and negotiate a short extension – perhaps of a year or two – before parting out the aircraft: selling its valuable components and realizing their value individually without the risk of either a prolonged market exposure or the complexity and risk of transitioning an asset to a new operator. The appeal of parting out has been amplified by acute shortages across OEM supply chains and maintenance, repair, and overhaul (MRO) capacity, which have driven the value of serviceable used components to elevated levels. In many cases, the sum of an aircraft’s parts now exceeds its value as a whole.
Engines are particularly attractive in this context. While airframes are typically configured to a specific operator’s requirements, engines are far more homogenous and therefore easier to remarket. Unlike airframes, which depreciate to a terminal scrap value over a finite life, an engine can be restored through the replacement of life limited parts (LLPs), and its value can rise over time following a full overhaul. In some cases, a freshly overhauled engine is worth more than it was when new, reflecting part price inflation.
Timing matters enormously in this calculus. An engine that has recently come out of overhaul is worth significantly more than one approaching its next shop visit, simply because it has more useful life remaining. The valuation question – How much of the next overhaul costs has been consumed, and what does that imply for market value? – is a highly technical one, and getting it right is central to structuring deals intelligently.
Reserve payments, or end-of-lease return compensation, add another layer of complexity. These are amounts collected from lessees during the lease term, based on usage, to fund future overhaul events. Collecting reserves is good and provides financial protection. The more reserves collected, the closer the aircraft and engines must be to a maintenance event, and therefore they are likely to have a lower market value. Reserves not disbursed during the lease term are typically retained by the lessor at expiry. A savvy and well-advised investor can acquire the engine (for parts) ahead of refurbishment, enabling it to retain the associated reserve pot while also benefiting from the parts value of the engine. If it intends to part out the engine rather than restore it, this not only represents a potential immediate windfall in terms of the cash received, but the combination of ready liquidity and avoided remarketing delay is a direct driver of improved internal rate of return.
A niche no more
Aircraft finance has always attracted a dedicated community of specialist investors and lenders who understand its rhythms: the maintenance cycles, the regulatory landscape, the nuances of remarketing an asset across jurisdictions. For much of its history, it remained a niche – appreciated by those inside it, largely overlooked by generalist capital.
That is changing. Rising yields, constrained supply, and growing recognition of aviation’s structural role in the global economy are drawing a broader audience. Equity investors have taken note, and capital has begun flowing into publicly listed leasing platforms and aviation-focused funds. That is a validation of the asset class – but it comes with a caveat. Public market exposure to aviation offers participation in the sector’s tailwinds; it does not, however, offer access to its most compelling opportunities.
The deals that generate outsized returns in aircraft finance are rarely found on an exchange. They are sourced through relationships: a lessor looking to quietly exit a portfolio, a distressed carrier in an emerging market seeking a pragmatic counterparty, an off-market transaction where the asset’s complexity – an unusual jurisdiction, an esoteric aircraft type, a lease with structural nuance, or aircraft or engines with complex technical requirements – has kept generalist capital at bay. It is precisely in these situations that deep technical knowledge of the asset, combined with the network and experience to source and navigate the associated risks, creates the conditions for generating exceptional alpha that public markets simply cannot replicate.
The aircraft you sit in on your next flight may be owned by a pension fund, a sovereign wealth fund, or a PE platform – and right now, whoever holds that asset is likely rather pleased the airline has decided to keep it. The investors generating the most interesting returns, however, are those who combined capital with the expertise and relationships to find opportunities others could not. That is precisely where the opportunity continues to lie.