Evaluate the exact 206 airframe, float, engine, propeller and seating approvals, practical exit access, water mission, training and insurance. Match committed funding to each purchase or conversion payment; later proposed refinancing cannot pay an earlier invoice.
A Cessna 206 amphibian can combine runway and water access, but the purchase decision depends on the actual airframe, float installation, seating and intended operations. Establish those facts before relying on a payload claim or arranging a loan. Six nominal seats, large loading doors and a substantial engine do not by themselves establish a suitable load, an accessible emergency exit or approval for a particular body of water.
Use the aircraft article library for related buying questions. This guide concentrates on the installed amphibious aircraft, passenger exit arrangements and the cash timing of a purchase or conversion. The 172 floatplane guide offers a smaller-aircraft comparison; its approvals, loading and maintenance figures should not be assigned to a 206.
Identify the airframe and engine before the floats
The New Zealand CAA's Cessna 206 report, Revision 4 dated January 25, 2019, distinguishes older Continental IO-520 and TSIO-520 groups from the 206H's Lycoming IO-540-AC1A5 and the T206H's TIO-540-AJ1A. It directs current technical decisions to current State-of-Design data. Use the dated report to identify questions, then establish the actual engine, propeller, limits and approved alterations. A family name does not imply one 300-horsepower Lycoming installation. New Zealand CAA: Cessna 206 type acceptance, Revision 4
The same report describes the utility family's double cargo doors and notes that the P206 personal version lacked that arrangement. Inspect the candidate rather than assuming every 206 has identical door access or seating. A later door modification, engine change or interior can also affect the installed configuration, documents, weight and continuing requirements. New Zealand CAA: Cessna 206 type acceptance, Revision 4
Record the airframe, engine, propeller and float models and serials. Obtain the actual approval documents, installation records, equipment list, weight-and-balance report, flight-manual supplements and instructions for continued airworthiness. FAA guidance explains that an STC approves a change and its effect on the original design. Separate approved changes still need a review of their interaction on the individual aircraft. FAA: supplemental type certificates and interacting design changes
Use the supplement for the installed float system
An amphibian's retractable wheels allow land operations, while straight floats create a different access plan. Establish the actual system and all required equipment. For an aircraft being converted, confirm the proposed airframe/engine/propeller combination and approval path before treating installation as an available turnkey service. A manufacturer's product overview does not document approval of the candidate.
Aerocet's posted A-10060 Revision E is an example of an FAA-approved supplement for specified 206-series aircraft on Model 3400 amphibious floats under STC SA01257SE. Its title includes listed legacy 206/P206/U206/TU206/TP206 groups and T206H; it does not list 206H. Do not extend the covered-model list merely because two aircraft share an engine family or a similar model name. Aerocet: Model 3400 FAA-approved supplement A-10060, Revision E
That supplement directs the user to actual weight-and-balance information for empty weight and useful load. It distinguishes wheel and float operation, identifies required propeller combinations and states that some propeller installations need separate FAA approval. Its limits are one installation's example, not figures for a Wipline-equipped aircraft or every Aerocet-equipped model. Obtain the current applicable approved documents for the actual candidate. Aerocet: Model 3400 FAA-approved supplement A-10060, Revision E
| Reference item in the supplement | Published weight | Buyer implication |
|---|---|---|
| Ramp or dock maximum | 3,755 lb | Does not replace a takeoff or landing limit |
| Takeoff on floats | 3,744 lb | Check the approved water-departure configuration and performance |
| Landing on floats | 3,661 lb | Arrival loading needs a separate check |
| Takeoff on wheels | 3,735 lb | Runway departure is not the same weight case as water departure |
| Landing on wheels | 3,550 lb | A runway destination can impose a different arrival limit |
Section 2 of that posted supplement also prohibits takeoff with a known hull leak or structural damage. A prospective buyer should have such findings resolved through the appropriate maintenance and approval process, rather than treating a functioning gear indicator or a recently signed annual as proof that the entire installation is ready. This is a buying check, not a substitute operating procedure. Aerocet: Model 3400 FAA-approved supplement A-10060, Revision E
Treat emergency exit access as part of the passenger mission
A large cargo opening is not the same as a simple emergency exit with the flaps extended. The Australian Transport Safety Bureau's June 2025 advisory, AO-2024-049-SAN-002, describes the difficulty of opening the double-door arrangement when the forward portion is obstructed by extended flaps. It encourages review of seating arrangements or approved exit modifications to improve evacuation access. Its accident discussion is safety evidence, not a blanket defect determination for every 206 configuration. ATSB: Cessna 206 cargo-door evacuation safety advisory, June 2025
Transport Canada's published AD CF-2020-10, effective April 23, 2020, contains group-specific occupancy, seat-removal, clear-egress-path, demonstration, briefing and door-modification provisions, with specified exemptions. The document distinguishes aircraft with an approved additional forward door and other configurations. These are Canadian requirements with their own scope; they do not automatically become the operating rule for a U.S.-registered aircraft. Transport Canada AD CF-2020-10: Cessna 206 cargo-door egress
For the actual aircraft and jurisdiction, establish current applicable requirements, approved modifications, seating and any alternative compliance. Have a qualified instructor review passenger briefing and practical access using the installed system, especially for rear-seat occupants. Determine whether the intended passengers can use the relevant exits and whether baggage or equipment obstructs the route. Do not assume that a door-handle kit, an extra front door or a verbal briefing resolves every scenario.
Make this assessment before deciding how many people the aircraft can serve on the intended trips. Nominal seating, weight-and-balance compliance and practical evacuation access answer different questions. The buyer may need a different seating arrangement, a properly approved modification or another aircraft to obtain a workable mission.
Plan water access, loading and training together
Use the actual aircraft's loading instructions and limits for occupants, baggage, fuel and required equipment. Check center of gravity, compartment limits and departure/arrival weights for the relevant surface. Float lockers have their own structural limits; their capacity does not add to aircraft useful load. Water accumulated inside floats needs investigation and affects both weight and balance.
The FAA seaplane handbook explains the effects of float weight and drag, water conditions and the relative scarcity of suitable refueling facilities for straight floats. Amphibious runway access creates more options, but each runway and water segment still requires appropriate planning and equipment. The dated handbook provides training context, while approved aircraft information governs the actual operation. FAA Seaplane Handbook: preflight, performance and amphibious gear
Have a qualified instructor assess the proposed base, docking, launch/recovery, fuel access and representative destinations. Check permissions, local restrictions, weather exposure, obstacles and practical alternatives. Section 91.103 addresses relevant preflight information and applicable takeoff/landing data. Do not invent water performance from landplane figures or use a generic cruise speed to promise access to remote destinations. 14 CFR 91.103: preflight alternatives and performance information
For ordinary private-pilot operations as pilot in command on water, the appropriate airplane single-engine sea class qualification normally matters. Section 61.31 distinguishes category/class privileges, endorsed solo alternatives and specified exceptions, as well as applicable high-performance and other training requirements. Authorized dual instruction is a different situation from carrying passengers as pilot in command. Have the instructor review the actual certificate and configuration. 14 CFR 61.31: category/class privileges and specified alternatives
Amphibious wheel configuration requires particular attention. The FAA handbook emphasizes verification before landing on water or land and describes the severe capsize risk of a wheels-down water landing. Learn the actual approved checks and emergency procedures with qualified instruction. Advisory equipment and indication need assessment and maintenance; they do not remove the need for the required verification. FAA Seaplane Handbook: preflight, performance and amphibious gear
Inspect the airframe and float systems with current information
Agree on an independent inspection by a shop experienced in the actual airframe, engine and floats. The pre-purchase checklist helps organize records, access, appropriate testing, written findings and any operational check. Include attachment structure, repairs, rigging, water-rudder systems, hull condition, leakage and evidence of abnormal loads. For an amphibian, include the installed gear, brakes, hydraulic, electrical and emergency-extension systems.
Wipaire's Model 3000/3450 service manual, Revision P dated April 18, 2025, illustrates why the float product's own instructions matter. Its corrosion discussion addresses saltwater washing and hardware care; its continuing-airworthiness sections cover task-specific hull, attachment, gear, hydraulic and electrical inspections. These Wipline instructions are not transferred to the separate Aerocet installation example. Use the correct material and repair data for the floats actually installed. Wipaire: Model 3000/3450 Service Manual and ICA, Revision P
A newer example is Wipaire Service Letter 274 Revision B, dated January 15, 2026. It identifies Model 3000/3450 amphibious floats with rotary-style main-gear actuators, including assembly part numbers 1005271 and 1012500, and addresses a shaft-key retainer. The manufacturer labels compliance mandatory. Have the shop determine actual effectivity, retainer status, records and regulatory obligations; a manufacturer's classification is not by itself a claim that the letter is an FAA AD applying to every 206. Wipaire Service Letter 274, Revision B: main-gear actuator retainer
Review the aircraft's water exposure, washing, storage, maintenance and repairs alongside the installed-product instructions. Saltwater history warrants careful inspection rather than an automatic assumption of either unacceptable damage or corrosion-free condition. Document inaccessible areas and unresolved questions before agreeing that a price reduction adequately addresses the risk.
Sections 91.409 and 91.417 distinguish annual/conditional 100-hour inspection arrangements and the maintenance/status records to retain or transfer. Obtain a current directive review for the airframe, engine, propeller and appliances, with the float and other alteration requirements coordinated. A general claim that all directives are complete is not the underlying evidence. 14 CFR 91.409: annual and conditional 100-hour inspections 14 CFR 91.417: maintenance/status records and transfer
Test conversion cash at each payment date
Consider an invented conversion-planning case, assuming the required installation approvals and compatible equipment can actually be established. A landplane costs $240,000.00 and a hypothetical loan at its purchase closing is $180,000.00, leaving a $60,000.00 contribution. A buyer starting with $200,000.00 allows $10,000.00 for transaction costs and a separate $20,000.00 for insurance, training and other initial items. Cash available for the separately defined float project is $110,000.00.
Suppose the fictional float project costs $120,000.00, payable in three milestones: $30,000.00, $50,000.00 and $40,000.00. These are invented prices, loan proceeds, allowances and progress terms. They are not installation quotations, current kit availability or a prediction that any creditor accepts this funding sequence.
| Milestone | Payment | Cash position under the assumptions |
|---|---|---|
| First project payment | $30,000.00 | $80,000.00 remains |
| Second project payment | $50,000.00 | $30,000.00 remains |
| Final project payment | $40,000.00 | $10,000.00 funding shortfall |
If a hypothetical $60,000.00 reimbursement were received only after completion, the eventual arithmetic would leave $50,000.00 after the listed project costs. That attractive final balance does not solve the earlier $10,000.00 shortfall needed to complete the project. Future financing is not cash available for an earlier invoice, particularly when approval, valuation, inspection or completed paperwork remains a condition.
Establish confirmed sources and payment conditions before beginning a project. Define who owns the work and equipment, what inspection or documentation accompanies each milestone, and what happens if the work or funding is delayed. The example excludes loan payments and continuing ownership expenses. Its initial-item allowance and float-project scope must not include the same cost twice.
Obtain insurance and financing for the actual operation
Use the ownership-cost guide to budget storage or mooring, launch/recovery, fuel, inspections, discrepancy work, corrosion prevention, subscriptions and future maintenance. Account for configuration changes and downtime using actual estimates. A useful payload or higher asking price does not establish that any particular reserve is adequate.
Discuss the installation, pilots, base, fresh/saltwater use and any instructional, rental or commercial operation with an aviation insurance adviser. Review hull valuation, liability/passenger sublimits, approved pilots, transition/recurrent training, deductibles, exclusions, recovery coverage and lender endorsements. Regulatory privileges and insurance acceptance are separate decisions; a sea rating alone does not guarantee a premium or coverage.
The seaplane financing guide, financed-aircraft insurance guide and first-time buyer roadmap help organize the actual proposal. Compare written advance, rate structure, fees, maturity, amortization, any balloon and prepayment terms. No universal floatplane contribution or surcharge is established here.
AOPA Aviation Finance's provider-specific process distinguishes application and underwriting from a formal lender decision with conditions and pre-closing documents. Resolve aircraft eligibility, repair/conversion timing, insurance and collateral requirements in writing. Before disbursement, coordinate inspection remedies, ownership/tax documents, title interests and releases. The FAA registry does not perform title searches, so establish the provider and scope. Request a financing discussion with the actual configuration and complete cash schedule. AOPA Aviation Finance: underwriting and pre-closing process FAA Aircraft Registry: clear title and recorded-interest releases
Frequently Asked Questions
Do I need a seaplane rating for the Cessna 206 Amphibian?
For ordinary private-pilot operations as pilot in command on water, normally the appropriate airplane single-engine sea class qualification is required, subject to the regulations' specified alternatives and exceptions. Authorized instruction and solo training are separate cases. Have an instructor assess your privileges and aircraft-specific training, and obtain the insurer's independent pilot and operating conditions before assuming coverage.