Airlines Are Tearing Down Six-Year-Old Jets: A Parts Supercycle That Fills OEM Backlogs Instead of Emptying Them

• Spirit Airlines stopped flying at 3:00 a.m. ET on May 2, 2026, and on May 4 asked the bankruptcy court for permission to sell or abandon 28 owned aircraft and 18 spare engines, turning a wind-down into feedstock for the parts market.
• Tarmac Aerosave is dismantling more than 10 A320neo and 737 MAX aircraft for AerFin in the rest of 2026, with more projects already prepared for 2027; one A320neo teardown yielded about 1,400 components.
• The two Spirit A320neos selected for recycling were three and a half and four years old, making them the youngest A320neos ever torn down.
• IBA counted 21 newest-generation narrowbodies torn down between June 2025 and August 2026, pulling the average scrapping age fifteen years below the 21.7-year norm for narrowbody retirement.

I haven't seen the volume of younger aircraft being torn down as I'm seeing today.

• HEICO's Flight Support Group posted net sales of $947.8 million and a 25.9% operating margin in the quarter ended July 31, 2026, growing 12% organically on aftermarket replacement parts.
• TransDigm turned $2.54 billion of quarterly revenue at a 59.4% gross margin, and $2.74 billion for fiscal 2026, up 12.5% year on year.
• AAR Corp grew fiscal 2026 revenue 19.0% to $3.31 billion and earned $187.7 million of net income — but at an 18.8% gross margin, a fraction of the parts specialists'.
• AerSale bought only $5.6 million of feedstock in the quarter against $27.1 million a year earlier and carried $376.0 million of inventory at June 30, 2026, leaving the dismantler levered to a pipeline it cannot source.

• Hanwha Aerospace is a risk-and-revenue-sharing partner with Pratt & Whitney on the GTF engine programme, positioning it directly inside the engine bottleneck that is grounding Airbus narrowbodies.
• IHI Corporation supplies fan modules and low-pressure shafts for an engine with more than 5,000 orders and overhauls and repairs engines for civil and defence aircraft, selling into the categories that are hardest to source.
• A single engine disc costs $1 million to $2 million and a fan blade $50,000 to $100,000 or more, so every additional month in a repair shop is priced straight into airline maintenance reserves.
• Engines are moved between airframes rather than scrapped, so the engine population is conserved while the airframe population shrinks — which is why aftermarket services revenue survives the teardown wave.

• Spirit Airlines put 28 owned aircraft and 18 spare engines into sale or abandonment in May 2026, returning scarce engines and airframes to the market while removing demand for them.
• United Airlines will retire roughly 80 aircraft in 2027 and expects its first 737 MAX 10s that year, turning its retirement programme into a delivery slot rather than a hole in the schedule.
• Boeing delivered 57 jets in September, including 43 MAX, and took 165 orders, while working toward47 MAX a month, which makes delivery rate rather than demand the binding constraint.
• Japan Airlines is running the same swap outside the United States, replacing 767s with A321neos, which means the replacement pull is global rather than domestic.

• November 5, 2026: AerSale reports third-quarter results, the first clean read on whether teardown economics have improved after two quarters of falling revenue and a $376 million inventory position.
• Through 2027: the next tranche of AerFin teardowns at Tarmac Aerosave, with more A320neo and 737 MAX projects already prepared, extending the feedstock pipeline into a second year.
• 2027: first 737 MAX 10 deliveries to United Airlines, the first visible proof that retirement-driven replacement demand converts into deliveries.
• Every quarter: IBA's base value and engine lease rate updates, where a rising end-of-life value now signals parts inflation rather than a healthy used-aircraft market.

• For HEICO that is the bull case: its Flight Support Group sells both new parts and used material, and a shrinking pool of serviceable material raises the value of both.
• For TransDigm the same arithmetic is only a partial offset, because proprietary-part pricing stays strong while early scrapping removes future aftermarket content on the youngest types.
• For the airlines the risk sits the other way: a replacement wave that arrives after the parts are needed leaves fleets grounded, and grounded aircraft cost more than retired ones.
• The structural risk to the whole thesis is a resolution of the engine bottleneck. If repair queues clear, young airframes go back to being worth more flying than scrapped and the teardown wave reverses.

• Days to quarters: the parts owners and the dismantler's November print, where a strong quarter would signal loosening feedstock and a weak one would confirm the market is supply-constrained.
• One to three years: the order book converting into deliveries, with every 737 MAX 10 or A320neo placed into a 2027 retirement slot serving as proof of the pull-forward.
• The signal to fade: a cleared engine shop backlog, which would end the teardown wave and remove the premium on harvested parts.