Start Shape Sinbad About

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ENTER THE KNEEBOARD A communication space for your Sinbad family

Sinbad Beacons Map

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Changes to the identification plate are possible until the production of your kit begins.
Production starts after 50% of the kit price has been paid.

Honest Cost Calculator

Engine and propeller are excluded for all models. Their cost varies widely depending on manufacturer, specifications, and condition, so to keep comparisons fair they are left out and discussed separately.

Item Van's RV-10 Sling HW Sinbad
Total
* Turn-key build labor reference: Sling TSi/HW flat-fee $90,000 — Custom Aircraft Builders (Apr 2024). RV-10 estimated at $128,000. U.S. centers may quote higher.
** Sinbad kit and 100% assembly labor are current project prices.

Kit Unit Price vs. Project Progress

Idea to create Sinbad
$45
Team assembly
$45
Design and engineering
$45
Construction of the first aluminum prototype
$45
Testing of the first prototype
$45
Sale of the metal aircraft project
$45
Re-design of Sinbad's fuselage in composite
$45
Creation of the Sinbad website: gradaeronaut.com
$45
Registration of GRAD Aeronaut LLC
$45
Choosing a factory location in Florida
$45
Start of composite prototype construction
$45
WE ARE HERE
Sales launch: stage price until 100 Standard status members
$45
Price until 200 Standard status members
$65
Price until 300 Standard status members
$85
Price until 400 Standard status members
$105
Price for all subsequent buyers
$125
Prototype demonstration at an exhibition
$125
Start of serial production
$125
Ramp-up to 2,000 kits per year
$125
Type certification of Sinbad aircraft
$125
Sales launch of certified type Sinbad
$540

Roadmap to Receiving Your Sinbad

Buy your first Kit Units Production begins: 2027 Completion scheduled: 2027 Kit handover Pickup at factory Home delivery Build yourself with GRAD Aeronaut support Flight testing Add Factory Assembly Configuration approval Procurement of parts Assembly at the factory Flight testing Aircraft Delivery Certification GRAD Aeronaut support First payment Use 500 Kit Units Use the final 500 Kit Units When you receive your Sinbad kit, you will have the choice of how to reach a completed aircraft. Either assemble it yourself, or entrust the work to the factory. In both cases, you will receive full professional support, guiding you until your Sinbad's airworthiness certificate. You will also have the opportunity to take several flight lessons in the Sinbad with an experienced instructor.

How the Sinbad kit purchase works

1,000 Kit Units = one Sinbad aircraft kit.

You can join the project with small payments, gradually accumulating Kit Units, or purchase the full 1,000 at once.

The earlier you buy, the lower the unit price and the higher your position in the production queue.

Your order is created when you purchase your first Kit Unit.

As you accumulate Kit Units, the corresponding privilege statuses are activated.

Once you reach Standard status, the price of your future Kit Units is fixed and will not change with project stages.

By the start of production of your kit in 2027, you need to accumulate at least 500 Kit Units.

To fully pay for and receive your kit, you will need to accumulate the remaining 500 Kit Units.

If your plans change before the start of production in 2027, you will receive a full refund of all transferred funds, minus payment processing fees, in accordance with the Purchase and Work Performance Agreement and the Refund Policy.

Your Kit Units Balance 2
*
Position Lock Status
1. Fixed queue position for the kit
Discount Credit Status
1. Fixed queue position for the kit.
2. $10,000 discount off the price at purchase.
Sinbad Standard Status
1. Fixed queue position for the kit.
2. Future Kit Units price locked at $45
3. Extra $2,500 discount on the engine in our store
Price per
Kit Unit
TODAY:
$45
Price per
Kit Unit SOON:
$65
Quantity of Kit Units
0
To pay: $0
* Temporary welcome bonus: 2 Kit Units from the Company
USE 500 KIT UNITS FOR PRODUCTION
Not available yet:
Production has not started.
Need 498 more Kit Units.

Please confirm that you have read and accepted the Purchase & Fulfillment Terms and Refund Policy before proceeding with payment.

Terms of Use

Last updated: July 13, 2025

These Terms of Use ("Terms") govern your access to and use of the website of GRAD Aeronaut LLC ("Company"). By accessing or using this Site, you agree to comply with these Terms.

1. Website Ownership and Purpose

The website gradaeronaut.com is owned and operated by GRAD Aeronaut LLC, a company registered in the State of Delaware, USA.

The Site provides information about the Sinbad aircraft kit project, its purchase and reservation program, and related services.

2. Informational Use and Program Clarity

The content on this Site is provided to help you explore the Sinbad project, available programs, and participation options.

Final terms, pricing, availability, benefits, queue positions, production priorities, and all related obligations are defined exclusively in the applicable Purchase and Fulfillment Agreement or other written agreement between you and the Company.

The Company may refine, update, or adjust program features, benefits, timelines, and availability as part of ongoing product development and operational planning, to the maximum extent permitted by law.

3. Agreement Priority

Participation in any purchase, reservation, or related program is governed by the applicable Purchase and Fulfillment Agreement.

In the event of any inconsistency between this Site and that Agreement, the Purchase and Fulfillment Agreement shall prevail.

4. Intellectual Property and Brand

All content on this Site, including text, images, design, branding, layout, and software elements, is the property of GRAD Aeronaut LLC unless otherwise stated.

Sinbad, GRAD Aeronaut, and related names, logos, and identifiers are trademarks and brand assets of the Company. Any reproduction, modification, or commercial use without prior written consent is prohibited.

5. User Conduct

You agree not to use this Site for any unlawful, fraudulent, or abusive purposes, and not to attempt to gain unauthorized access to any part of the Site, services, or infrastructure.

6. No Warranty

The Site and its content are provided "as is" and "as available." The Company makes no warranties, express or implied, regarding accuracy, completeness, or uninterrupted availability.

7. Limitation of Liability

To the maximum extent permitted by law, GRAD Aeronaut LLC shall not be liable for any direct, indirect, incidental, or consequential damages arising from your use of this Site, including delays, service interruptions, or loss of data.

8. Third-Party Links

This Site may contain links to third-party websites. The Company does not control and is not responsible for the content, policies, or practices of external sites.

9. Modifications

The Company may update these Terms from time to time. Continued use of the Site after changes are posted constitutes acceptance of the updated Terms.

10. Governing Law

These Terms are governed by the laws of the State of Delaware, USA. Any disputes shall be resolved in the appropriate courts of Delaware.

11. Legal Contact

For legal notices or formal inquiries:

legal@gradaeronaut.com

Purchase and Work Performance Agreement

Last updated: July 13, 2025

(Community-driven Sinbad aircraft project)

This Purchase and Work Performance Agreement (“Agreement”) is entered into between the Buyer and GRAD Aeronaut LLC (“Company”), a limited liability company registered in the State of Delaware, USA, and governs the Buyer’s participation in the community-driven Sinbad aircraft project (the “Project”), including reservation, purchase, and production of a kit for home assembly of the Sinbad aircraft.

1. Purpose

This Agreement governs the Buyer’s participation in the reservation and purchase program for a Sinbad aircraft kit conducted by the Company.

2. Early-stage participation incentives

To allow installment-style participation and reward Buyers for supporting the Project even with small amounts, the Company uses a system of conditional units called “Kit Units.”

The principle is: the earlier Kit Units are purchased during the Project’s development, the lower their price.

3. Nature of Kit Units

Kit Units are pre-order credits used exclusively to offset the purchase price of a Sinbad aircraft kit.

Kit Units are not money, securities, or investment instruments and are not redeemable in cash.

Kit Units do not create any obligation of the Company to deliver a kit until all conditions of this Agreement are fulfilled.

4. Kit price expressed in Kit Units

1,000 Kit Units correspond to one Sinbad aircraft kit.

5. Order formation

An order is considered formed when the Buyer purchases the first Kit Unit with monetary funds.

6. Personal Kit Units balance

Each Buyer has a personal Kit Units balance reflecting the total number of all purchased Kit Units.

The Buyer’s balance determines the set of available privilege statuses.

The Buyer may obtain a higher privilege status by purchasing additional Kit Units.

7. Automatic status upgrade

When the Buyer’s balance reaches the level required for the next privilege status, the status is automatically upgraded and becomes active.

8. Time limit for status upgrades

The Buyer may upgrade privilege status only until the Company sends a notice that it is ready to begin production of the order.

From the moment such notice is sent, the achieved privilege status becomes locked and cannot be changed.

9. Changes in Kit Units pricing

The price of Kit Units changes as the Project moves to new development or production stages.

Information about stages, statuses, and prices on the Shape Sinbad page is provided for reference only and does not constitute a binding obligation of the Company.

10. Price lock for Kit Units

For Buyers who reach the Standard privilege status, the price of all subsequent Kit Units for the relevant aircraft kit is fixed at the level in effect at the time that status was achieved.

11. Production payment (500 Kit Units)

After the Company sends a notice of readiness to begin production of the order, the Buyer has thirty (30) calendar days to ensure that at least 500 Kit Units are available on the Buyer’s balance.

The production payment is made by the Company through the redemption of 500 Kit Units from the Buyer’s balance at the moment production of the corresponding aircraft kit begins, in accordance with Section 14 of this Agreement.

If the production payment is not secured, the procedure described in Section 12 applies.

12. Failure to secure the production payment: freeze, Company decision, refund

If, within the period specified in Section 11, the Buyer’s balance does not contain at least 500 Kit Units, the order is placed in a frozen status.

The Company may keep the order in frozen status for up to ninety (90) calendar days after the expiration of that period.

After the freeze period, the Company decides either to cancel the order or to restore it under terms determined by the Company.

If the order is cancelled by the Company, the Buyer is entitled to a full refund of all funds actually received by the Company from the Buyer, minus non-refundable payment, banking, and other provider fees, unless otherwise provided in the Refund Policy.

Refunds are made from incoming funds of new orders within a reasonable time determined by the Company and to the original payment method.

13. Final settlement (remaining 500 Kit Units)

The remaining 500 Kit Units of the total order price must be available on the Buyer’s balance within thirty (30) calendar days after the Company sends a notice that the order is ready for pickup or delivery.

The final settlement is carried out by the Company through the redemption of the corresponding number of Kit Units from the Buyer’s balance in accordance with Section 14 of this Agreement.

14. Kit Units Redemption Procedure

The production payment and the final settlement for the aircraft kit are carried out by the Company solely through a one-time redemption of the corresponding number of Kit Units as provided in this Agreement.

Redemption of Kit Units is performed only if the Buyer's balance contains the full number of Kit Units required for the relevant stage of settlement.

For this purpose, the Buyer must independently transfer 500 Kit Units from their balance through the interface on the personal information page on the Company's website.

Partial redemption is not permitted.

If the Buyer does not transfer the required number of Kit Units to the Company, the redemption will not take place, and the procedure set forth in this Agreement for the relevant stage shall apply.

Redeemed Kit Units are not subject to restoration.

15. Production queue and priority

Orders are fulfilled in queue order. The Buyer’s initial position in the queue is determined by privilege status and confirmed payment volume.

The Company may adjust the queue for objective production, logistical, or regulatory reasons.

16. Indicative nature of timelines

All production, assembly, and delivery timelines are indicative only.

The Company is not liable for indirect damages.

17. Kit contents and exclusions

Unless otherwise stated, the kit does not include: engine and related systems, propeller, wheels and brakes, fuel systems, ballistic parachute systems, avionics, navigation or landing lights, paint/finish, or shipping.

Shipping is arranged and paid by the Buyer separately.

18. Airworthiness and responsibility

The Company does not guarantee the airworthiness, legality, or operational condition of the completed aircraft.

The Buyer bears full responsibility for final assembly, inspection, registration, maintenance, flight testing, and operational safety.

19. Communication and Buyer information page

By participating, the Buyer agrees to receive updates and notices via email.

Order status and official notices are published on the Buyer’s personal page on the Company’s website and/or sent by email.

A notice is deemed delivered at the moment it is sent by the Company.

20. Authorized payment entities

The Company may use authorized entities or individual entrepreneurs to receive payments on its behalf.

The is listed on the Company’s website and forms an integral part of this Agreement.

21. Fraudulent or unauthorized payments

The Company reserves the right, at its sole discretion, to refuse recognition, suspend, or cancel any payment that it reasonably believes was made as a result of fraud, unauthorized access, material misrepresentation, or other unlawful activity.

22. Order pickup, storage, and extension of unclaimed period

The Buyer must collect the paid order within forty-five (45) calendar days after the Company sends the Buyer a notice that the order is ready for pickup or delivery.

If the order is not collected within this period, the Company may begin charging storage and insurance fees.

If the order is not collected within ninety (90) days, the Company may cancel the order and apply the refund procedure set forth in this Agreement and the Refund Policy, minus applicable overhead, incurred expenses, and non-refundable payment provider fees.

23. Aircraft Identification Plate

The Buyer may change only the serial number and personal signature on the Aircraft Identification Plate until the Company sends a notice that production is ready to begin.

After that, the information becomes final and cannot be changed.

24. Force majeure

The Company is released from liability for partial or complete failure to perform its obligations under this document if such failure results from force majeure circumstances, including, but not limited to: war, armed conflicts, terrorist acts, mass unrest, revolutionary events, actions of government authorities or regulators, sanctions or restrictions, epidemics and pandemics, natural disasters (floods, hurricanes, tornadoes, tsunamis, earthquakes, lightning strikes, fires, excessive precipitation, icing), failures and outages in power supply, communications, internet, banking and payment systems, as well as other events beyond the reasonable control of the Company that prevent it from fulfilling its obligations.

The performance deadlines are extended for the duration of such circumstances and their consequences.

25. Governing law and priority

This Agreement is governed by the laws of the State of Delaware, USA.

In the event of any conflict, this Agreement prevails, followed by the Refund Policy, the Terms of Use, and the Privacy Policy.

Refund Policy

Last updated: July 13, 2025

(Community-Driven Sinbad Aircraft Project)

This Refund Policy applies to the Community-Driven Sinbad Aircraft Project (the “Project”) and governs the terms for refunding payments made by the Buyer in connection with participation in the Project.

This Policy applies to the extent it does not conflict with the Purchase and Performance Agreement.

1. Refund of Individual Payments Within 14 Days

The Buyer may request a refund of a specific payment within fourteen (14) calendar days from the date of that payment, provided that the Project has not entered the production stage and no irreversible processes directly related to that payment have been initiated.

Refund requests must be submitted through the Buyer’s personal information page on the Company’s website and/or to the Company’s email address listed on the website.

2. Agreement Priority and Refund Barrier

After fourteen (14) calendar days from the date of a payment, funds are not refundable until the order is cancelled by the Company in accordance with the Agreement.

Order formation is defined in the Agreement as the moment the Buyer acquires the first Kit Unit with monetary payment.

3. Refund After Cancellation by the Company

If the Company cancels the order in accordance with the Agreement, the Buyer is entitled to a full refund of all monetary funds actually received by the Company from the Buyer, minus non-refundable payment, banking, and payment-provider fees, unless otherwise provided in Section 4 of this Policy.

Refunds are issued as funds become available from new orders and within a reasonable time determined by the Company, to the original payment method.

4. Cancellation After Production Start or Non-Payment of the Remainder

If, after production has begun and/or after the production payment has been applied, the Buyer fails to ensure the required remaining Kit Units within the specified time, the Company may cancel the order.

In such case, in addition to non-refundable payment, banking, and payment-provider fees, the Company may retain agreed compensation in the amount of 10,000 (ten thousand) USD, as compensation for the Company’s costs, reservation of production capacity, administrative expenses, and lost opportunity, but not exceeding the total monetary funds actually received by the Company from the Buyer.

Any remaining amount, if any, shall be refunded as funds become available from new orders and within a reasonable time determined by the Company, to the original payment method.

5. Method and Timing of Refunds

Refunds are issued as funds become available from new orders and within a reasonable time determined by the Company, to the original payment method used by the Buyer.

Any exchange-rate differences, intermediary bank fees, or payment-provider charges are the responsibility of the Buyer.

6. Verification and Fraud Prevention

The Company may request identity, payment, and transaction verification before processing a refund in order to prevent fraud, unauthorized access, or misuse.

7. Force Majeure

The Parties are released from liability for partial or total non-performance of obligations under this Policy if such non-performance results from force-majeure events, including but not limited to: war, armed conflicts, terrorist acts, civil unrest, revolutionary events, actions of governmental or regulatory authorities, sanctions or restrictions, epidemics and pandemics, natural disasters (floods, hurricanes, tornadoes, earthquakes, lightning strikes, fires, excessive atmospheric precipitation, icing), failures or disruptions of power supply, communications, internet, banking or payment systems, and other events beyond the Company’s reasonable control.

Performance deadlines are extended for the duration of such circumstances and the elimination of their consequences.

8. Contact

GRAD Aeronaut LLC

Email: info@gradaeronaut.com

Website: https://gradaeronaut.com

Privacy Policy

Last updated: July 13, 2025

This Privacy Policy ("Policy") explains how GRAD Aeronaut LLC ("Company," "we," "our," or "us") collects, uses, stores, and protects personal data obtained from users of the website gradaeronaut.com ("Site").

By using the Site, you agree to the terms of this Policy.

1. Data We Collect

We may collect and process the following categories of personal data:

  • Name (first and last)
  • Email address
  • Postal address and country of residence
  • Phone number
  • Payment method and billing information
  • IP address, browser, and device information
  • Usage and interaction data collected through cookies and analytics tools

2. How We Use the Data

We use personal data for the following purposes:

  • Processing deposits, purchases, and payments
  • Communicating about order status, production, delivery, and support
  • Responding to inquiries and providing assistance
  • Improving website performance and user experience
  • Sending project updates and notifications related to your account and participation
  • Analyzing usage patterns through analytics tools

3. Data Storage and Protection

Personal data is stored on secure systems and processed using reasonable administrative, technical, and physical safeguards designed to protect against unauthorized access, alteration, or loss.

4. Data Sharing

We may share personal data with the following categories of recipients, only as necessary to provide our services:

  • Payment processors and authorized payment agents
  • CRM and analytics platforms
  • Shipping and logistics providers
  • Legal, accounting, or tax advisors, where required by law

We do not sell personal data to third parties.

5. Cookies

We use cookies and similar technologies to:

  • Ensure proper functionality of the Site
  • Remember user preferences
  • Understand how the Site is used

You can control cookie settings through your browser. Continued use of the Site indicates consent to the use of cookies as described in this Policy.

6. Your Rights

Depending on your jurisdiction, you may have the right to:

  • Request access to your personal data
  • Request correction or deletion of your data
  • Restrict or object to certain processing
  • Withdraw consent, where applicable

To exercise these rights, contact us at info@gradaeronaut.com.

7. International Data Transfers

Personal data may be stored or processed on servers located in the United States or other countries.

Where required by applicable law, appropriate safeguards are used to protect personal data transferred across borders.

8. Data Retention

We retain personal data only for as long as necessary to fulfill the purposes described in this Policy, comply with legal obligations, and resolve disputes.

9. Policy Updates

We may update this Policy from time to time. Any changes will be posted on this page with an updated date. Continued use of the Site after changes are published constitutes acceptance of the revised Policy.

10. Contact

GRAD Aeronaut LLC

Email: info@gradaeronaut.com

Website: https://gradaeronaut.com

Pricing Matrix

Pricing Matrix

Authorized Billing Entities

For payment processing purposes, GRAD Aeronaut LLC may use authorized billing entities or individual entrepreneurs acting on its behalf.

Current authorized billing entity:
Sergei Gradov, Individual Entrepreneur (Georgia)
Acting as an authorized billing and payment collection agent for GRAD Aeronaut LLC.

This information may be updated from time to time. The current version published on this website shall be deemed authoritative and controlling.

Platform Status

The Sinbad Portal is under active development and refinement. Certain features and modules may be in testing or limited operation at times.

We are continuously improving performance, stability, and functionality. Your access and participation help shape the final experience.

If you encounter an issue, you may contact us at support@gradaeronaut.com