A Financing Tool From Another Era Finds New Relevance
Equipment Trust Certificates – a financing structure so old it was used to fund railroad expansion in the 19th century – are showing up in more infrastructure deals than they have in years. The basic mechanics have barely changed: a trustee holds legal title to a physical asset, the borrower makes periodic payments to retire the debt, and lenders enjoy a security interest that sits closer to the asset than most corporate bonds ever get. What has changed is who is using them and why.
The renewed interest is not accidental. With borrowing costs elevated and institutional investors demanding better protection on long-duration assets, the collateral structure built into ETCs starts to look attractive again. Airlines never fully abandoned them – equipment trust certificates and their close cousin, the enhanced equipment trust certificate, have been standard financing for commercial aircraft for decades. But the logic is now migrating into ground transportation, port infrastructure, and energy equipment, where buyers are reassessing what “secured” really means when credit conditions tighten.
The appeal comes down to one word: seniority.
How the Structure Actually Works
An Equipment Trust Certificate works because the asset itself – not just a pledge against it – is held in a trust. When an airline or rail operator finances a fleet of locomotives or aircraft through an ETC, the trust holds legal title until the final payment clears. This gives lenders a repossession path that bypasses the usual bankruptcy morass. In a standard corporate bond default, creditors line up and wait. In a well-structured ETC default, the trustee can move to recover the asset directly, which is why these instruments have historically priced tighter than unsecured debt from the same issuer.
Enhanced versions – EETCs, used heavily in aviation – add another layer by creating tranched certificates with different repayment priorities. Senior tranches get paid first from lease income generated by the equipment; junior tranches absorb losses first if cash flow falls short. A liquidity facility from a third-party bank often covers up to 18 months of interest payments, buying time to remarket the equipment before the structure unravels. It is a design built for the reality that planes, ships, and rail cars retain value on secondary markets and can be redeployed – unlike, say, a struggling retailer’s brand equity.
The critical assumption is that the underlying asset holds its value and can be remarketed quickly if the borrower fails. This is why the structure works better for standardized equipment – commercial aircraft, intermodal containers, power generation turbines – than for bespoke infrastructure that only one buyer would ever want. A 737 can be redeployed to another carrier within months. A custom-built piece of port infrastructure probably cannot. That distinction shapes where ETCs make sense and where they become an illusion of security.
Why Infrastructure Buyers Are Paying Attention Now
Several forces are converging to make ETCs worth a second look for infrastructure-oriented portfolios. First, the rate environment has made unsecured borrowing more expensive across the board, which widens the pricing advantage that a secured, asset-backed structure can generate. When the spread between secured and unsecured debt narrows during low-rate periods, the administrative complexity of an ETC structure is harder to justify. When that spread widens, the math changes. Buyers of transportation and energy infrastructure are increasingly funding acquisitions with project-specific debt rather than corporate facilities, and ETCs fit naturally into that approach.
Second, regulators and rating agencies have spent years reinforcing the legal basis for equipment trust structures across different asset classes. The aviation market stress-tested EETCs during the pandemic-era carrier collapses, and while the results were mixed, the senior tranches generally performed as advertised. That track record – even with the complications – gives infrastructure investors a clearer picture of how the structure behaves under real pressure. Investors evaluating fixed-income instruments with long durations, including those who have been watching rate-sensitive products like callable bond ladders, are increasingly drawn to the asset-backed certainty ETCs can provide.
Third, the pool of eligible assets is expanding. Ground transport operators, renewable energy developers financing turbine fleets, and shipping companies have all started exploring whether the ETC framework can be adapted to their equipment. The legal architecture exists. The challenge is finding institutional investors comfortable with assets outside aviation, where the secondary market depth – the ability to remarket quickly at a fair price – has not been as thoroughly tested. Some structures are moving forward anyway, priced to reflect that uncertainty with wider spreads on junior tranches.
What Investors Need to Watch
For fixed-income investors considering ETCs, the asset’s secondary market liquidity is the variable that everything else depends on. A certificate backed by a widely traded aircraft type is a fundamentally different risk than one backed by specialized equipment with two or three potential buyers globally. Diligence on the remarketing agreement – who is obligated to find a new operator, on what timeline, and at what minimum price – matters more than the headline coupon.
Tranche structure deserves equal scrutiny. In multi-class EETCs, the gap between what senior noteholders recover and what junior noteholders recover in a distressed scenario can be enormous. Investors reaching for yield by buying junior paper in an ETC should model a scenario where the equipment sits idle for a year before remarketing, the secondary price comes in 20 to 30 percent below appraised value, and the liquidity facility has already been drawn. If the returns still work at that outcome, the yield pickup is real. If not, the spread is not compensation for risk – it is the risk.
One structural feature that buyers often underweight is the cross-collateralization provision, or its absence. Some ETC packages bundle multiple assets, so that if one piece of equipment is destroyed or rendered unmarketable, the remaining collateral supports the whole certificate. Others are single-asset structures where one bad outcome breaks the entire deal. That difference rarely shows up in the marketing summary – it lives in the trust agreement, usually in a section nobody reads until a default forces them to.
The Quiet Return of a Proven Tool
Equipment Trust Certificates never disappeared from aviation finance, but their reappearance across other infrastructure categories signals something worth tracking. The conditions that made them standard in rail and shipping a century ago – the need to finance long-lived physical assets with predictable cash flows and genuine collateral value – have not gone away. What went away was the urgency to use them when cheap unsecured debt made the additional structure feel unnecessary. That urgency is back, and the investors who understand how ETC trust agreements actually function when a deal goes wrong will be the ones positioned to exploit the spread advantage without absorbing the downside of a structure they misread.
