Enhanced Equipment Trust Certificates

An EETC is a way for an airline to borrow money by separating a group of aircraft from the rest of the company and putting those planes into an independent trust. The trust raises money by issuing several classes of notes, usually a senior class with very strong protections and one or more junior classes that absorb more risk. The airline signs a “hell-or-high-water” lease back from the trust, meaning it must make fixed lease payments no matter what. Those lease payments are the only source of cash to pay interest and principal on the notes.

There are two ways this works depending on whether the aircraft already exist. If the planes are already in the airline’s fleet, the trust buys them from the airline using the note proceeds. The airline uses that money to pay off earlier financing it used when it first acquired the aircraft and the EETC becomes the new long-term lender. If the aircraft are new deliveries, the trust does not own anything yet. Instead, the deal is partially prefunded: note proceeds sit in an escrow account, and as each aircraft delivers from the manufacturer, the trust uses that escrow to pay the manufacturer. If a plane is never delivered, the unused funds are returned to investors (minus small break costs). This pre funding is important because it lets airlines lock in attractive financing terms months or years before deliveries without having to fund the planes themselves.

The key reason investors accept low yields—sometimes investment-grade yields even when the airline is below IG—is the U.S. bankruptcy framework. Under Section 1110 of the Bankruptcy Code, an airline in Chapter 11 must either keep paying for EETC aircraft on time or give them back quickly. That rule, combined with the fact that senior tranches have a separate liquidity facility that covers 18 months of interest if payments are disrupted, makes the top class of an EETC behave more like secured aircraft paper than like unsecured airline credit. Rating agencies base their view on the stress-case value of the aircraft, the strength of the lease structure, the repossession mechanics, and the expected recovery if the airline fails.

In practical terms, an EETC can let an airline take a group of aircraft—each originally financed in different ways and at different times—and refinance them into one standardized, long-dated, well-rated package. The airline can get cheaper funding than it could achieve on its general corporate credit, plus the ability to finance future deliveries before they arrive.

Covered Bonds

Covered bonds exist because they let banks fund long-term mortgages with cheap, stable, long-dated debt while giving investors an exceptionally safe instrument. Banks originate mortgages and keep them on balance sheet, but those mortgages require multi-year funding. Deposits are short-term and volatile, and unsecured bank debt is more expensive. A covered bond solves this by letting the bank borrow against a legally protected pool of its own high-quality mortgages. The assets stay on the bank’s balance sheet—unlike securitizations—but are ring-fenced so that investors have dual recourse: first to the bank, and, if the bank fails, to a priority claim on the mortgage pool. This structure has produced essentially no investor losses in Europe for more than two centuries, which is why regulators grant preferential treatment and why banks can issue the debt at tight spreads.

For the bank, the economics are straightforward. Mortgages typically earn swap +50–150 bps. Covered bonds usually cost swap +10–35 bps in markets like Germany and Sweden, so the gross spread capture is roughly 40–100 bps. Mandatory overcollateralization—generally 103–110%—means the bank must pledge more mortgage assets than the funding raised, which reduces the effective spread by about 5–10 bps. After this adjustment, the net margin is usually 30–90 bps, from which the bank still covers credit losses, servicing costs, capital charges, and overhead. Even so, this is materially cheaper than unsecured funding and preserves the bank’s ongoing economic relationship with its mortgage customers.

Investors buy covered bonds because they are safer than senior bank debt yet still offer a yield pickup over government bonds. The collateral pool is transparent, rules on asset quality and matching are strict, and the overcollateralization provides a measurable cushion. In countries like Sweden, Denmark, and Germany, this stability allows banks to match long-lived mortgage assets with equally long-lived, low-risk funding. The result is a self-reinforcing system: deep, liquid covered bond markets give banks reliable funding, which in turn supports consistent mortgage pricing for households and keeps the entire mortgage finance structure resilient.