An airplane can be worth tens of millions of dollars and still spend the afternoon sulking at a gate because of a component that fits in your palm. That mismatch - enormous asset, tiny bottleneck - is the patch of runway Jet Parts Engineering has occupied since 1994. The Seattle company develops FAA-approved replacement parts, engineers repairs for components that might otherwise be discarded, and runs specialized maintenance operations. Its customer is not the passenger wondering why boarding has stopped. It is the airline or repair shop trying to prevent that announcement from happening at all.
The company calls its first line of business PMA parts. A Parts Manufacturer Approval is not shorthand for a generic substitute. It is a combined design and production approval from the Federal Aviation Administration that permits a manufacturer to make and sell a replacement or modification article for a type-certificated aircraft, engine or propeller. JPE reverse-engineers a candidate, substantiates that it meets airworthiness requirements, establishes a controlled production system, and puts the approved part into its catalog. The object may be a bearing, seal, washer, switch, hose, bladder or connector. The valuable thing is the whole package: design, approval, repeatable production, paperwork and availability.
01 / The wedgeThe first thing to fail was availability
Price opened the door, but waiting made the sales pitch urgent. In a 2025 interview, JPE president John Benscheidt described the comparison bluntly: an approved PMA part could be available immediately while an OEM item might require another 60 days. For an operator measuring disruption in missed flights and maintenance turnaround, the cheapest part is not necessarily the one with the lowest invoice. It is the one that gets the larger asset earning again.
This explains what JPE actually did differently. It did not begin with a dreamy declaration that aviation needed disruption. Founder Anu Goel started with hard-to-source components. The team listened to airlines and maintenance organizations, looked for repeated pain, and developed an alternative when demand could justify the engineering and certification. It also held inventory. During the pandemic-era supply squeeze, JPE described setting blanket orders across a customer's year and carrying excess stock where practical. The product was the part; the service was certainty.
The useful aircraft part is the one with airworthiness papers and a place on the shelf.The JPE operating idea, in plain English
02 / Three answersMake it, repair it, or overhaul it
A PMA part is only one answer to a maintenance problem. JPE built two more. Through PG Aerotech and Airline Component Parts, it offers DER repairs - custom, substantiated repair schemes that can return worn components to service when the OEM manual does not contain a practical repair. Through Northeast Aero Compressor and Cima Aviation, it provides maintenance, repair and overhaul for pneumatic, hydraulic, fuel, electrical, electromechanical and avionics components. In 2025, Percival Aviation added aircraft interiors. The group now meets the same buyer at several points in one decision: buy a new alternative part, salvage the existing component, or send the assembly for specialist work.
The compounding catalog
That breadth separates JPE from a narrow parts maker and from a distributor that mainly moves someone else's inventory. The group owns proprietary designs, carries approval assets, operates repair stations and sells technical labor. Its ecommerce portal adds a mundane but meaningful layer: customers can see technical information, price and availability, place orders and track them. In a relationship-heavy industry where a quote can become its own little voyage, searchable inventory is a product feature.
03 / The priceWhat it costs - and what it can save
JPE does not publish a universal discount because there is no universal aircraft component. An industry analysis of engine-shop work estimated PMA parts and non-OEM DER repairs can reduce material cost by roughly 30 to 40 percent compared with new OEM replacements. Another aerospace-market report put the broader PMA range at 25 to 45 percent. Those are market estimates, not a promise on every JPE invoice. The better calculation includes lead time, avoided replacement, inventory carrying cost and the revenue consequence of a grounded aircraft.
Illustrative engine-shop material cost index
Reported potential savings: about 30-40%. Actual economics vary by component, approval, warranty, volume and availability.
The other large number needs equal care. On April 7, 2026, TransDigm completed a roughly $2.2 billion cash acquisition of Jet Parts Engineering and Victor Sierra Aviation Holdings together. The companies generated about $280 million in combined 2025 revenue. Neither TransDigm nor seller Vance Street disclosed JPE's individual price or revenue, so calling JPE alone a $2.2 billion company would be neat, clickable and wrong.
04 / The turnWhat changed airline minds
Alternative aircraft parts have long faced a trust problem. OEMs protected lucrative aftermarket sales. Some lessors restricted PMA material in lease documents out of concern for residual values. Airlines then added their own engineering reviews before a new part entered the purchasing system. None of that vanished. What changed was the relative cost of caution.
Airline losses during the pandemic sharpened every maintenance calculation. Then supply-chain disruption made old habits operationally painful. A buyer once hesitant to add an unfamiliar approved part could compare that discomfort with an escalating OEM price, scarce inventory and a repair turnaround slipping by weeks. JPE engineering executive Jeremy Hahn said some operators' hesitation changed suddenly when they needed to cut costs. Benscheidt later argued that availability had become as important as price. The industry did not wake up one morning newly romantic about independent engineering. It ran the spreadsheet while an aircraft waited.
“This changed suddenly when operators needed to cut costs.”Jeremy Hahn, Jet Parts Engineering
05 / The machineSeven acquisitions, but one customer
Private equity arrived in 2018, when Vance Street Capital recapitalized JPE and Goel retained a material ownership stake. The following expansion looks aggressive on a timeline, but the logic is unusually legible. Aero Parts Mart brought regional-aircraft products and airline relationships. AeroSpares added proprietary pressure switches. Airline Component Parts and Northeast Aero deepened DER and MRO work. Mitchell contributed more than 170 PMA parts and more engineering capacity. Cima added fuel and hydraulic repairs. Percival brought interiors and a United Kingdom base.
These were not seven attempts to discover a new business. They were seven ways to answer more questions from the same kind of buyer. By 2025, JPE added 108 PMA parts and 23 DER repair capabilities across 25 ATA chapters, the standard numbering system that organizes aircraft systems. TransDigm, itself built around proprietary aerospace components and aftermarket economics, was a logical acquirer. It said JPE would keep its brand and operate independently. In July 2026, Goel shifted from CEO to chairman to focus on more M&A, while longtime executive John Benscheidt took day-to-day control as president.
What another operator can steal
- Start with a repeated bottleneck whose delay costs far more than the item itself.
- Turn compliance into a reusable capability, not a final paperwork scramble.
- Let customer requests shape the development queue, but require enough volume for the business case.
- Stock the approved answer. Availability converts technical parity into operational advantage.
- Acquire adjacent capabilities that serve the same buyer and make the original offer more useful.
06 / The limitsWhere the playbook stops working
This model is defensible because it is fussy. It can also fail for the same reason. Engineering and approval expense must be spread across enough units. A component still protected by an attractive OEM warranty offers a weak opening. A lease may restrict PMA use. A customer can prefer one global OEM agreement to evaluating another supplier. And inventory is only an advantage when the company predicts demand correctly; the wrong shelf full of specialized parts is simply expensive metal.
The regulatory bar cannot become casual either. A company can advertise lower cost and faster delivery only after it has established the approved design, production controls, traceability and repair data that make the alternative airworthy. In this market, trust arrives slowly and can leave on the first nonconformance. The attractive founder lesson is not “copy a part.” It is “build a system that repeatedly earns permission to solve a costly problem.”
07 / The fitA boring corner with compounding value
JPE sits between the original equipment manufacturers and the airlines, cargo carriers and independent shops that maintain aircraft for decades. It competes with OEM replacement material and with aftermarket specialists such as HEICO, Wencor, Chromalloy, AAR and GA Telesis. Its advantage is not a single spectacular invention. It is a widening library of approved parts and repairs, plus facilities that can do the physical work. Each entry creates one more reason for a maintenance buyer to search the JPE catalog before accepting the OEM's price or clock.
The company's public culture fits that work. Its stated values emphasize autonomy, active listening, customer success, continuous learning and doing the right thing. “Our people are the best part” appears so often it risks becoming wallpaper, but the underlying point is sound. Aircraft aftermarket work rewards engineers, inspectors, salespeople and technicians who can translate a customer's strange, specific failure into an approved, repeatable answer.
There is no consumer magic trick here. A buyer cannot download a bearing. The lesson is more durable: find a niche where the customer's problem is urgent, the incumbent is slow, the approval process filters out tourists, and small wins can accumulate in a catalog. Then keep listening. Somewhere tonight, a very expensive airplane is waiting for a very unimpressive-looking part.