Buying an aircraft is one of the largest purchases most pilots and business owners will ever make, and an aircraft pre-purchase inspection is the best tool available to protect that investment.
Many buyers assume a clean logbook and a good-looking exterior are enough to confirm an aircraft is sound. In reality, corrosion, worn components, and deferred maintenance can be hiding well out of view, and only a hands-on inspection by a qualified mechanic will catch them.
Understanding what a pre-purchase inspection involves, what it costs, and what to do if problems are found can help you approach a purchase with confidence rather than guesswork.
1. What Is a Pre-Purchase Inspection?
A pre-purchase inspection, often called a pre-buy, is an independent mechanical and documentation review completed before a sale closes.
It is separate from any annual or periodic inspection the seller may already have on file.
The purpose is straightforward. An unbiased third party, working for the buyer rather than the seller, confirms the aircraft is what the listing represents and identifies anything that could affect its condition, safety, or value.
2. How a Pre-Buy Differs from an Annual Inspection
An annual inspection confirms an aircraft meets the minimum standard required to remain legally airworthy.
A pre-purchase inspection goes further.
It looks at overall condition, remaining component life, and long-term ownership costs from the buyer’s perspective, which an annual inspection is not designed to address.
If you’re still working through the earlier stages of a purchase, our aircraft buying guide covers the full process from search to closing.
3. Airframe and Structure
Inspectors examine the fuselage, wings, and empennage for corrosion, previous damage, and improper repairs.
Control surfaces and rigging are also checked to confirm everything moves and functions as it should.
Aircraft based near saltwater or in humid climates often warrant closer attention to corrosion, particularly in areas that are difficult to see during a routine walkaround.
4. Engine and Powerplant
The engine is typically the most closely scrutinized part of the inspection, and for good reason.
A thorough pre-buy usually includes:
- Borescope Rarely for piston. More often on turbine aircraft. Always on Jets.
- Compression testing on each cylinder
- Oil analysis checks for metal content or contamination — worthwhile for a major purchase, though it’s rarely done in practice.
- Review of time remaining before overhaul
- Inspection of accessories such as magnetos, alternators, and fuel system components
These checks give buyers a realistic picture of how much useful engine life remains, which directly affects both value and future maintenance budgeting.
5. Avionics and Electrical Systems
Avionics should be confirmed against what was advertised in the listing.
A functional check of navigation, communication, and autopilot systems helps verify everything works as expected, and a review of wiring can reveal wear or non-standard repairs that would otherwise go unnoticed.
6. Landing Gear and Brakes
Tires, brakes, and struts are inspected for wear.
On retractable gear aircraft, a gear retraction test is standard practice and helps confirm the system operates correctly under normal conditions.
7. Logbooks and Documentation
Documentation review is just as important as the physical inspection.
A thorough pre-buy typically includes:
- Logbook completeness and continuity
- Airworthiness directive (AD) compliance history
- Service bulletin compliance
- A title search to confirm clear ownership
- Damage history reports
Incomplete or inconsistent logbooks are one of the most common red flags uncovered during this stage, and they can raise questions well beyond the specific gap in the records.
8. Choosing Who Performs the Inspection
The inspection should always be carried out by a mechanic or shop of the buyer’s choosing, not one recommended or paid for by the seller.
Ideally, the inspector should have specific experience with the aircraft’s make and model. A shop that specializes in piston singles may not be the right fit for a turboprop or jet inspection.
Raven Aircraft Sales works with trusted, independent inspection facilities across Canada and can help connect buyers with the right shop for their aircraft type. You can learn more about how we support buyers on our Why Raven page.
9. What a Pre-Purchase Inspection Typically Costs
Costs vary depending on aircraft type and inspection depth.
- Single-engine piston aircraft: typically $1,500 to $3,500 CAD
- Multi-engine piston aircraft: typically $3,000 to $6,000 CAD
- Turboprops: often $5,000 to $15,000 CAD depending on engine and avionics complexity
- Jets: can run well into five figures, particularly when full borescope and logbook audits are involved
These figures will shift based on location, shop rates, and how much teardown or testing is required. For a broader look at what ownership involves beyond the purchase price, see our guide on aircraft ownership costs.
Compared to the price of the aircraft itself, and especially compared to the cost of a major repair discovered after the sale, this expense is small.
10. What Happens If the Inspection Finds Issues
Finding a problem during a pre-buy does not automatically end the deal. It simply gives the buyer information and options.
Minor findings, such as a worn tire or a small logbook discrepancy, are common and rarely change the outcome of a sale. Moderate findings, like an upcoming AD compliance requirement or a component nearing the end of its service life, often lead to a price adjustment or a negotiated repair. Major findings, such as significant corrosion or undisclosed prior damage, can be grounds to walk away from the deal entirely.
A well-written purchase agreement should always include an inspection contingency clause allowing the buyer to renegotiate or exit the deal based on the results. This is worth discussing with your broker or lawyer before the inspection begins.
Why Buyers Should Never Skip This Step
It can be tempting to skip the inspection on a lower-priced aircraft, or when a deal feels like it is moving quickly.
This is where buyers most often run into trouble.
A pre-purchase inspection gives an accurate picture of true condition rather than the seller’s description, provides leverage to renegotiate if issues are found, and protects the buyer from inheriting expensive, undisclosed problems. It also confirms the documentation is complete and gives the new owner a reliable maintenance baseline going forward.
How Raven Aircraft Sales Helps Buyers Through the Process
Every transaction we handle includes guidance through the pre-purchase inspection, from selecting a qualified facility to interpreting the findings and advising on fair next steps if issues come up.
Raven represents buyers and sellers across Canada and North America, and our relationships with inspection shops span everything from piston singles to jets. Our founder’s own experience flying aircraft ranging from single-engine pistons to Boeing 737 NG aircraft means we understand what to look for at every level of complexity.
If you’re considering a purchase and want to talk through the inspection process for a specific aircraft, browse our current inventory or reach out through our contact page to start the conversation.
Final Thoughts
An aircraft pre-purchase inspection is not an optional extra. It is a core part of buying any aircraft safely, whether it’s a piston single or a turbine aircraft.
The cost of the inspection is minor compared to the protection it provides. It confirms what you are actually buying, gives you leverage if problems surface, and helps you avoid costly surprises after closing.
If you’re working through a purchase and want an experienced advisor in your corner, the Raven Aircraft Sales team can help. Contact us for a confidential discussion about your next aircraft purchase.