Terms of Use

Effective date: November 9, 2026

These terms cover your use of the Flight Level 510 website (flightlevel510.com), the FL510 portal and FL510's QuickBooks app. They are the End User License Agreement for the website, the portal and FL510's QuickBooks app. "FL510", "we" and "us" mean Flight Level 510 LLC. By using the website, the portal or the app, you agree to these terms.

1. Your rental is governed by your lease

Renting an FL510 aircraft is governed by your signed aircraft dry lease, its schedules and exhibits, and the rules they include ("your lease"). These terms do not replace or change your lease. If these terms and your lease disagree about a rental, your lease controls.

If you place an aircraft with FL510, your agreement with FL510 for that aircraft controls the arrangement. These terms cover only your use of the portal.

2. Using the website and portal

• You may use the website to learn about FL510 and to contact us. Information on the public site, such as aircraft availability and the average fuel-price card, is for general information. It is not an offer, and it may be out of date.
• You use the portal to manage your account, documents, reservations, check-out and check-in, payments and messages.
• We may change, pause or stop parts of the website or portal. We will try to give notice of changes that affect your rentals.

3. Your account

• Keep your account information accurate and up to date. This includes your contact details, pilot certificate, medical, flight review and insurance.
• Upload only your own documents, and only true copies.
• Keep your sign-in private. Do not let anyone else use your account. Tell us at once if you think someone else has used it.
• You are responsible for what is done through your account.
• We may limit or close an account that breaks these terms or your lease, or that we believe puts people, aircraft or the service at risk.

4. Pilot responsibility

The portal shows information from FL510's records, such as reported squawks, meter readings and inspection due dates. It does not tell you an aircraft is airworthy. As pilot in command, you decide whether the aircraft is in condition for safe flight, and you keep every duty the Federal Aviation Regulations give you, including under 14 CFR 91.3, 91.7(b) and 91.103. Nothing in the portal changes that.

5. Instructors and owners

• Flight instructors who use the portal must keep their instructor information current and use the portal only for their own students and assigned reservations.
• Aircraft owners use the owner portal to see records about their own aircraft and to send requests. A request is not an approval until FL510 staff approve it.

6. Acceptable use

Do not:

• use the website or portal for anything unlawful;
• try to get into another person's account, or into parts of the portal your role does not allow;
• give false information, or upload documents that are not yours or are not true copies;
• interfere with the service, overload it, test its security without our written permission, or get around its limits;
• copy or collect data from the website or portal with automated tools;
• use portal messages to harass anyone, send spam, or share other people's personal information;
• share lock-box codes, or use them outside your reservation.

7. Electronic records and signatures

• You agree that we may give you records, notices and documents electronically, in the portal or by e-mail.
• When you click to accept your lease, a check-out acknowledgment or another record while signed in, that click is your electronic signature. It has the same effect as signing on paper.
• Before you accept, the portal shows you the full text. We keep an exact copy of what you were shown. You can get your copy from the portal's Documents page at any time.
• To use electronic records you need a current web browser, internet access and an e-mail address. If your e-mail address changes, tell us. You can also update your billing e-mail in the portal. You can ask us for a paper copy of a record at no charge. You can also withdraw your consent to electronic records by contacting us, but that may mean we cannot rent to you through the portal.

8. Payments

• Rates and fees. Rental rates, minimums, cancellation charges and other fees are set by your lease and its schedules, not by these terms. The portal may show an estimate when you book. The estimate is not a bill.
• Booking. Making a reservation does not charge you. It reserves the aircraft.
• Saving a card. When you save a card, you do it through our card processor's secure form. The processor checks the card with a $0 verification. Your full card number never reaches FL510. When you save a card, the portal shows how FL510 may use it, and you agree to that before the card is saved. You may save up to two cards. One is your default.
• After your flight. FL510 prices each flight under your lease and bills it on an invoice. When paying in the portal is open to you, you pay invoices there with your saved card.
• Records. FL510's own invoice and payment records are the record of what you owe and what you paid. We also keep a copy in our bookkeeping system.
• Questions about a charge. Contact us first so we can look into it.

9. Our content

The website, the portal and FL510's QuickBooks app, including their text, design and software, belong to FL510 or the companies that license them to us. You may use them only as these terms allow.

10. Disclaimer

We work to keep the website, the portal and the app accurate and available. But we provide them "as is" and "as available". To the extent the law allows, we do not promise that they will always be available, error-free, or that information on them is complete or current. This includes the public fuel-price card and availability information. This section does not limit anything your lease says about the aircraft or the rental.

11. Limit of liability

To the extent the law allows, FL510 is not liable for indirect or consequential losses from using the website, the portal or the app, such as lost profits or lost data. Your lease, not this section, governs responsibility for the aircraft and the rental. Nothing in these terms limits liability that the law does not allow us to limit.

12. Governing law

California law governs these terms. Any dispute about the website, the portal or the app will be handled in the state or federal courts in Sacramento County, California, unless your lease says otherwise for that dispute.

13. Changes to these terms

We may update these terms. We will post the new version here with a new effective date. If a change matters to you, we will also tell you in the portal or by e-mail. If you keep using the website or portal after the change takes effect, the new terms apply. Changes to these terms do not change your lease. Your lease changes only as your lease allows.

14. Contact us

E-mail: info@flightlevel510.com