In the evolving world of aviation, not every aircraft gets to enjoy a graceful retirement. Some reach the end of their economic life long before they stop flying. Others, through accident damage or economic downturns, simply become worth more in pieces than as a whole. This is where the part-out market steps in — a critical, and often misunderstood, component of the used aircraft ecosystem.
What Is a Part-Out?
A “part-out” occurs when an aircraft is disassembled and its components — engines, avionics, landing gear, control surfaces, and interior parts — are sold individually. The process transforms a single depreciating asset into a collection of valuable, serviceable units that can extend the operational lives of other aircraft.
For appraisers and asset managers, a part-out represents the salvage value of an aircraft — the final fallback when continued operation or resale is no longer viable.
Why Part-Outs Matter
The part-out market plays a stabilizing role in aviation economics. When demand for pre-owned aircraft fluctuates, part-outs help absorb oversupply. Instead of flooding the market with low-value airframes, operators can extract more value by selling components that are still in demand.
For example, a 20-year-old regional jet may have limited resale potential as a whole, but its engines might still have high time remaining, and its avionics or auxiliary power unit (APU) may be compatible with newer models. These components can command premium prices, especially during supply shortages or when OEM production lead times are long.
Market Drivers Behind Part-Out Decisions
Several key factors influence whether an aircraft becomes a candidate for part-out:
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Maintenance Costs vs. Market Value
When major inspections, engine overhauls, or airframe maintenance events exceed the market value of the aircraft, part-out becomes a financially sound option. -
Supply Chain Constraints
Recent global supply chain disruptions have increased demand for used serviceable material (USM). Operators are turning to part-outs to source hard-to-find components quickly and affordably. -
Fleet Retirements and Technology Changes
As newer, more efficient aircraft enter service, older models like early-generation A320s, 737 Classics, and CRJs often see their economic value shift from flying assets to parts donors. -
Accident or Damage History
Aircraft with heavy damage or significant repair costs may yield more value through disassembly than restoration.
Economic and Appraisal Implications
For appraisers, the growing importance of part-outs has reshaped how residual values are modeled. Instead of relying solely on market comparisons for whole aircraft, appraisers must also understand component-level demand and pricing trends.
An aircraft nearing the end of its service life might still retain strong residual value if its engines are on high-demand lease programs or if its avionics are compatible with later-generation models. The part-out value effectively sets a floor for depreciation — a key metric for financiers and lessors evaluating long-term returns.
Environmental and Sustainability Benefits
Interestingly, the part-out process aligns with aviation’s increasing focus on sustainability. Reusing serviceable components reduces manufacturing demand, minimizes waste, and extends the life cycle of existing materials. Many operators view part-outs as part of a broader circular economy model — one that balances financial and environmental considerations.
Challenges in the Part-Out Market
While part-outs provide value, they come with logistical and regulatory challenges:
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Certification: Components must be inspected, tested, and recertified according to FAA or EASA standards before resale.
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Traceability: Documentation must confirm each part’s maintenance and operational history to ensure airworthiness.
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Storage and Logistics: Managing, cataloging, and storing thousands of parts requires specialized facilities and expertise.
These factors contribute to high entry barriers for new part-out businesses — and reinforce the importance of experienced asset managers and MRO partners.
The Bottom Line
The part-out market is no longer a niche corner of aviation — it’s a vital mechanism that underpins the health of the global fleet. For operators, lessors, and appraisers alike, understanding the economics of disassembly is crucial to making informed asset decisions.
In many cases, the final chapter of an aircraft’s life isn’t its last flight — it’s the next flight of another aircraft made possible by its parts.
