The pre-owned aircraft market in mid-2026 has a supply problem. Roughly 6.5% of the business aircraft fleet is listed for sale, well below the 10-year average of about 8%, and industry data providers JETNET and AMSTAT both put for-sale inventory near its tightest levels in years. New aircraft delivery delays keep pushing buyers toward the pre-owned market, and dealers in the International Aircraft Dealers Association closed 746 deals in the first half of the year, up 21% over 2025.
What does that mean if you are buying? Good aircraft move fast — JETNET puts newer airframes (0–5 years old) at an average of just 54 days on the market, versus 128 days for aircraft over 26 years old. And when clean inventory moves fast, sellers gain leverage, and buyers start hearing a dangerous suggestion: shorten the pre-buy, or skip it entirely, or lose the airplane to the next offer.
We have brokered enough deals — and flown enough airplanes — to tell you plainly: the pre-buy inspection is where a deal either earns your money or saves it. Here is how we run them.
What a Pre-Buy Inspection Actually Covers
A pre-buy is not an annual inspection, and it is not a test flight with a walk-around. Done properly, it is an independent technical and records audit of the aircraft you are about to own, performed by a facility with no stake in the sale. The core elements:
- Records review first. Complete, continuous logbooks; airworthiness directive compliance; service bulletin status; damage history; and whether the aircraft has been on a manufacturer maintenance program without gaps. In our experience, more deals die in the records room than on the hangar floor. Missing logbook years or an undisclosed gear-collapse repair can take double-digit percentages off an aircraft’s value — or make it unfinanceable.
- Physical inspection scoped to the airframe. Corrosion mapping, borescope of the engines, gear and flight-control checks, avionics function, and pressurization runs. The scope should match the aircraft: a 30-year-old turboprop that has lived near salt water needs a different pre-buy than a five-year-old jet still on programs.
- Engine and program verification. If the aircraft is enrolled on an hourly engine program, confirm enrollment is current, paid, and transferable. Program status is one of the largest single swings in resale value on many models.
- A test flight with someone who flies the type. Squawks show up in the air that never show up in a hangar.
Structuring the Deal Around the Inspection
The pre-buy only protects you if the purchase agreement does too. We structure deals so the letter of intent defines the inspection scope, the facility, who pays for what, and — critically — what happens when discrepancies are found. The standard framework: airworthiness discrepancies are corrected at the seller’s expense, cosmetic and optional items are negotiated, and the buyer retains the right to walk with the deposit returned if defined thresholds are exceeded. Escrow holds the deposit and the title work runs in parallel, so a clean inspection can close quickly.
The Tight-Market Trap
In a seller’s market, the pressure to compress the pre-buy is real. Our answer is not to skip steps — it is to move faster through the same steps. That means having the inspection facility selected and slotted before the LOI is signed, records requested digitally on day one, and a broker who knows which findings are negotiating points and which are deal-breakers. Speed and discipline are not opposites; they are what a good acquisition team is for.
The same applies on the sell side. Sellers who assemble their records, close out open discrepancies, and pre-stage program transfers before listing routinely close faster and defend their asking price better. Tight inventory rewards prepared sellers most of all.
Buying or Selling? Talk to People Who Fly Them
OnFly Air’s aircraft sales desk is run by people who operate aircraft every day — so our pre-buy standards come from operating reality, not a checklist template. Whether you are acquiring your first turboprop or repositioning a jet out of your fleet, we manage the process end to end: valuation, LOI, inspection, escrow, and closing. We are available 24/7/365 at (858) 529-7860 or quotes@onflyair.com — call us before you sign, not after the surprises.