MOSAIC Light Sport Aircraft Rules: What They Change for Buying and Financing

This guide is for buyers deciding between a light-sport aircraft and a certified airplane they can now fly as a sport pilot. It covers what the FAA's MOSAIC rule changed, how to tell whether a used airplane qualifies, and how lenders and insurers treat each kind of aircraft as of September 2026.

What did MOSAIC change, and when?

MOSAIC (Modernization of Special Airworthiness Certification) was published in the Federal Register on July 24, 2025 (90 FR 35208). It took effect in two phases, according to the FAA's MOSAIC fact sheet:

• October 22, 2025: new sport pilot privileges, flight training and certification changes, repairman and maintenance rules.
• July 24, 2026: the old "light-sport aircraft" definition was removed and the new light-sport category airworthiness standards in 14 CFR Part 22 took effect, along with some operating changes.

For a buyer, the practical effect is two separate tests. The first asks what a sport pilot may fly, and it applies to any airplane in any airworthiness category. The second asks what can be certificated as a new light-sport category aircraft, which is a manufacturer question. They use different stall-speed measures, and mixing them up is the most common mistake in MOSAIC coverage.

Before and after: light-sport rules compared

Sources: 14 CFR 61.316, 14 CFR Part 22 Subpart B, AOPA MOSAIC FAQ and AOPA, July 22, 2025.

Which used airplanes may a sport pilot now fly?

The test is the airplane's clean stall speed, VS1, expressed in calibrated airspeed at the airplane's maximum certificated takeoff weight. It must be 59 knots CAS or less. The airplane must also have no more than four seats and be non-pressurized. Weight, horsepower and cruise speed no longer matter for the sport pilot.

Two details trip up buyers. First, most POH stall tables are printed in indicated airspeed (KIAS). AOPA gives the example of an airplane that stalls at 50 knots indicated but 56 knots calibrated, so a number that looks comfortably under 59 on the IAS scale can be close to the line once converted. Second, calibration errors vary between models and even between airplanes of the same model, so a type club's rule of thumb is not a substitute for the airplane's own data.

There is no official list. In its December 2025 update, AOPA said the FAA had not produced a list of qualifying aircraft. AOPA reported that the Cessna 172 is comfortably within the limit and that most PA-28 series aircraft qualify, while the four-seat PA-28-235 falls just over the line at 60.8 KCAS per Piper's data, and the Cessna 210's clean stall speed rose to 65 knots by the 1972 model. Treat any list, including the one below, as a place to start checking, not as a determination.

How to verify a specific airplane before you make an offer

1. Get the POH or AFM that matches the airplane's model year and serial number, including any supplements.
2. Find the flaps-up (clean) stall speed at maximum certificated takeoff weight. Use the most forward CG case if the table varies by CG.
3. Convert it from KIAS to KCAS with the airspeed calibration table in the same manual.
4. If there is no calibration table, ask the manufacturer or type club. AOPA points owners to FAA Advisory Circular 90-89C, which describes stall-speed flight-test procedures.
5. Check the logbooks for any STC that raised maximum takeoff weight. A higher max weight means a higher stall speed at that weight.
6. Keep a copy of the page you relied on in the aircraft records. Your insurer, lender and future buyers will ask.

How could MOSAIC affect demand and resale values?

MOSAIC enlarged the pool of possible buyers for some airplanes, and that can support prices. But no published data yet isolates MOSAIC's effect on values, so treat the points below as considerations, not forecasts.

• Qualifying certified singles may gain buyers. Sport pilots, and higher-certificated pilots flying on sport pilot privileges with a driver's license instead of a medical, can now shop four-seat trainers such as many 172s and PA-28s. More buyers for the same airplanes tends to firm up prices.
• The overall market was already tight. Used piston-single inventory was down about 17% year over year as of mid-2026, and asking prices were roughly flat (Sandhills Global, July 2026 data). Don't assume a MOSAIC premium on top of that.
• Older two-seat LSAs face new competition. A sport pilot who once had to buy an S-LSA can now consider a certified 150, 172 or DA20, and new Part 22 designs can offer four seats and more useful load. That could soften demand for some older legacy LSAs, especially orphaned models with weak parts support.
• Borderline airplanes don't benefit. An airplane at 60 or 61 KCAS clean gains nothing from MOSAIC. Paying a premium for "sport pilot eligible" without documentation is a risk you carry at resale.
• Appraisals follow comparable sales. A lender's appraiser values the airplane on comps, equipment, records and condition. Eligibility may show up in comps over time, but don't expect an appraiser to add value for it directly.

How does financing differ for light-sport and standard-category aircraft?

Lenders price and structure loans by aircraft type as well as by borrower. Your pilot certificate matters mostly through insurance: a lender needs a policy it can rely on. The category of the airplane itself drives the rate, the loan-to-value and how many lenders will look at the deal.

Source: FLYING Finance aircraft loan rates, updated September 21, 2026. More broadly, piston aircraft loan rates quoted by major aviation lenders generally start around 7% for well-qualified borrowers and run to roughly 10% (AOPA Aviation Finance quotes 6.99–9.99%).

Worked example: the same loan at each starting rate

Assume a $180,000 airplane, 15% down ($27,000), and a $153,000 loan over 20 years:

On this loan the light-sport starting rate costs $65 more per month than the certified rate, or $15,637 more in interest over the full term. That gap is real but small next to the differences in insurance, maintenance and resale between the airplanes themselves. Payments are principal and interest only and are illustrative, not a quote.

Other financing differences to plan for

• Loan size and term. AOPA Aviation Finance offers 20-year terms on single-engine loans only at $75,000 and above. Many used LSAs finance below that, which usually means a 10- to 15-year term and a higher payment per dollar borrowed.
• Down payment. AOPA's published minimum is 15% for post-1960 single-engine aircraft and 20% for pre-1960 aircraft. Some vintage airplanes that sport pilots can fly, such as Piper J-3 Cubs and Aeronca Champs, were built before 1960.
• Manufacturer support. The FAA's MOSAIC maintenance FAQ says major repairs on light-sport category aircraft must be authorized by the manufacturer or a person acceptable to the FAA. An orphaned LSA brand can make an underwriter cautious.
• Title and liens are the same process. Every category uses the FAA Registry: bill of sale (AC Form 8050-2), registration application (8050-1), and a security agreement recorded under 14 CFR Part 49. The Cape Town Convention does not reach these small airplanes. See the title and escrow guide.

What should sport pilots know about insurance under MOSAIC?

MOSAIC changed what the FAA allows. It did not change what underwriters require. Every lender requires hull coverage with the lender named as loss payee and a breach-of-warranty endorsement, so insurability is a financing question as well as a safety one.

• Pilot time drives price. For a Cessna 172, BWI's March 2026 figures show $1,200–$2,500 a year for a private owner with 250+ hours and an $80,000–$150,000 hull, but $2,000–$3,500+ for a pilot under 150 hours with a $100,000 hull (BWI). Many new sport pilots sit in the low-time bracket.
• The market is not hardening. Rates softened through Q1 2026, and BWI described 2026 pricing for experienced private pilots of personal-use pistons as "generally stable".
• Ask the right question. Ask each insurer how it treats a sport pilot certificate in a standard-category four-seater. Expect questions about dual time in type, and about the endorsements a sport pilot needs for retractable gear or a controllable-pitch propeller.
• Mission fit. A sport pilot may carry one passenger. If you regularly need three or four people on board, price the private pilot certificate into the plan rather than the airplane.

For coverage types and lender clauses in detail, see aircraft insurance requirements.

A decision checklist for MOSAIC-era buyers

1. Define the mission. Two people on board is the ceiling as a sport pilot. Night flying needs an endorsement plus BasicMed or a 3rd-class medical.
2. Verify eligibility on paper. VS1 of 59 KCAS or less at max takeoff weight, four seats or fewer, non-pressurized. Keep the documentation.
3. List the endorsements you'll need. Retractable gear and controllable-pitch propellers each require training and an endorsement under 61.331.
4. Quote insurance first. Get it in writing before the purchase agreement, with the lender as loss payee.
5. Compare the categories honestly. A certified airplane often gets a lower starting rate and a broader lender pool. An LSA may cost less to buy and maintain. Loans under $75,000 may be limited to shorter terms.
6. Inspect as usual. MOSAIC changes nothing about a proper pre-buy inspection and logbook review.

How this guide differs from related guides

This page covers the rule change and what it means for buying and financing across aircraft types. For a category-by-category overview of legacy S-LSA, E-LSA, new Part 22 aircraft and certified airplanes, including maintenance and ownership costs, see the light sport aircraft buyer's guide. For one popular certified airplane under the new rules, see the DA20 for sport pilots. Model-specific LSA guides cover the Tecnam P2008 and Evektor SportStar. For kit and amateur-built aircraft, see financing experimental aircraft. For how rates are set, see understanding aircraft loan rates. Unfamiliar terms are defined in the aircraft financing glossary.

Frequently asked questions