Terms of Service

Last updated: August 20, 2026

These Terms of Service ("Terms") are a binding agreement between you and Tailcheck LLC ("Tailcheck," "we," "us," or "our") governing your use of the Tailcheck website, applications, and related services (collectively, the "Service"). Please read them carefully — they include important disclaimers, a limitation of our liability, and your responsibilities when using aviation-related information.

1. Acceptance of These Terms

By creating an account, purchasing a report or subscription, or otherwise accessing or using the Service — including using free and public tools such as searching for an aircraft or aircraft records, or viewing a public report — you agree to be bound by these Terms and by our Privacy Policy, which is incorporated into these Terms by reference, whether or not you create an account. If you do not agree, do not use the Service.

The Service uses cookies and similar browser storage as described in the Privacy Policy, with non-essential uses controlled through the consent banner.

If you use the Service on behalf of a company, partnership, flying club, or other entity, you represent that you have authority to bind that entity, and "you" refers to that entity.

2. The Service

Tailcheck is a platform that digitizes, organizes, and stores aircraft maintenance records. Using advanced automation and proprietary technology, the Service converts uploaded logbook pages and related documents into structured data and provides summaries, timelines, reports, and compliance-tracking tools based on that data.

The Service also functions as a document repository for your aircraft: you may store logbook scans, maintenance releases, service bulletins, Airworthiness Directive documentation, invoices, weight-and-balance records, STCs, FAA Form 337s, and other files associated with an aircraft. Content you upload is treated as part of that aircraft's record, as described in Section 8 and the Privacy Policy.

The Service further includes tools for searching aircraft records and datasets, and paid options for purchasing one-time reports and retrieving digital copies of FAA records for an aircraft.

The Service is an informational and organizational tool. It does not perform maintenance, inspections, or certifications of any kind.

3. Critical Aviation Disclaimer — Read This Section Carefully

Tailcheck is an informational and organizational tool only. It is not a substitute for the official aircraft records, FAA records, or the professional judgment of a certificated mechanic (A&P or IA), repair station, inspector, flight instructor, or aviation attorney.

You acknowledge and agree that:

1. Information presented on the Service does not correlate with, and is not a representation of, the safety, reliability, or airworthiness of any aircraft.
2. Only a certificated mechanic holding Inspection Authorization (IA), or another person authorized by the FAA, can determine and certify compliance with Airworthiness Directives, inspection requirements, and return-to-service standards.
3. The pilot in command is solely responsible for determining whether an aircraft is airworthy, safe, and lawful to operate before each flight, as required by the Federal Aviation Regulations. Tailcheck has no responsibility or liability for that determination.

Automated processing makes errors. The technology that reads and interprets your documents can and does make mistakes — including misread dates, hours, and reference numbers, missed or duplicated entries, and incorrect categorization. Output of the Service may be incomplete, inaccurate, or out of date, and you should expect that some errors exist.

Third-party data is not guaranteed. The Service displays information obtained from third-party sources, including FAA registry and Airworthiness Directive data, NTSB records, and flight-tracking providers. Tailcheck does not guarantee that those sources — including the FAA — provide data that is accurate, complete, timely, or properly formatted. Always consult official sources directly for the most current information.

A "missing," "overdue," or "unknown" status means no record was found. When the Service shows a compliance item as overdue, missing, due, or unknown, it means only that Tailcheck did not find a corresponding record in the documents processed for that aircraft. It does not mean the work was not performed. Uploading additional records or correcting extracted data may change the displayed status.

You must independently verify everything. Before relying on any information from the Service for any purpose — including maintenance decisions, airworthiness determinations, regulatory compliance (including 14 CFR §§ 91.409, 91.411, 91.413, and 91.207), aircraft purchase or sale, valuation, financing, or insurance — you must verify it against the original logbooks, official FAA records, and other authoritative sources.

Reports are not professional advice. Owner reports, pre-buy reports, scores, ratings, and similar outputs are automatically generated analyses. They are not professional advice, appraisals, inspections, or opinions of value or condition. A pre-buy report is not a substitute for a physical pre-purchase inspection performed by a qualified mechanic.

Tailcheck does not determine airworthiness, does not certify compliance with any Airworthiness Directive or regulation, and is not approved by, endorsed by, or affiliated with the FAA or any other aviation authority.

4. Eligibility and Accounts

You must be at least 18 years old to use the Service. By using the Service, you represent that you meet this requirement.

Accounts are created with an email address and accessed through secure sign-in links sent to that email and, where offered, a password. You are responsible for maintaining control of your email account, keeping any password confidential, and for all activity that occurs under your Tailcheck account. Notify us promptly at support@tailcheck.me if you believe your account has been accessed without authorization.

You may not share, sell, or transfer your account except as described in Section 10 (Aircraft Sale or Transfer).

5. Your Responsibilities

You agree that you will:

• Retain your original records. The Service is not the system of record for your aircraft. Original logbooks and maintenance documents remain the authoritative records, and you are responsible for keeping them safe as required by the applicable regulations.
• Upload only what you have the right to upload. You represent that you own or have the necessary rights to the documents and data you submit, and that uploading them does not violate any law or third-party right.
• Upload only aircraft-related content. The Service is a repository for aircraft records. Do not upload files unrelated to an aircraft, or files containing sensitive personal information about you or others, because everything you upload is treated as part of the aircraft's record — including under the retention and records-continuity provisions of Section 8 and the Privacy Policy.
• Provide accurate information when creating your account, adding aircraft, and correcting extracted data.
• Review and correct extracted data. The Service provides tools to review, correct, and annotate extracted entries. Output quality depends in part on your review.

6. Acceptable Use

Free and public tools, including the aircraft intelligence report, are part of the Service and subject to these Terms. You agree not to:

• Access or use the Service by any automated means (scraping, crawling, bulk downloading) except through interfaces we provide;
• Generate reports through automated, scripted, or bulk means, or use the free tools in any manner intended to exhaust, degrade, or impose costs on the Service or its third-party data providers;
• Request, unlock, or claim a report using an email address you do not own or control, or misrepresent your ownership of or association with any aircraft;
• Reverse engineer, decompile, or otherwise attempt to derive the source code, models, prompts, or other proprietary components of the Service;
• Resell, sublicense, or commercially redistribute the Service or data obtained from it without our written consent;
• Circumvent, or attempt to circumvent, rate limits, access controls, billing, or the Service's subscription and fee structure;
• Bypass or attempt to bypass anti-abuse measures, including challenges and verification steps;
• Upload malicious files, attempt to disrupt the Service, or probe its security;
• Impersonate another person, or misrepresent the identity of any aircraft or the ownership, provenance, or association of any documents or records you upload;
• Use the Service for any fraudulent, deceptive, or unlawful purpose.

Enforcement. We monitor for fraudulent, deceptive, and abusive use of the Service. If we determine, in our sole discretion, that an account has engaged in such use — including any misrepresentation of an aircraft or its records, or any attempt to circumvent the Service's fee structure — we may suspend or terminate the account immediately, without prior notice and without refund, in addition to any other remedies available to us at law or in equity.

7. Purchases, Subscriptions, Payments, and Refunds

Purchases and subscriptions. The Service offers one-time purchases — such as individual aircraft reports and retrieval of digital copies of FAA records — and annual subscriptions to the full features of the Service. Current pricing — including any per-aircraft pricing — is shown on our Pricing page and again at checkout before you are charged. Prices are in U.S. dollars and may change as described below.

One-time purchases. One-time purchases are billed at the time of purchase through our payment processor (Stripe). Because reports and FAA record retrievals are fulfilled promptly and incur third-party costs, one-time purchases are non-refundable once the report or records have been delivered, except as required by law or as we may agree in our discretion.

Billing and auto-renewal. Subscriptions are billed once per year, in advance, through our payment processor (Stripe). Each subscription renews automatically at the end of its annual term unless you cancel before renewal. We never see or store your full card number.

Cancellation. You may cancel any aircraft subscription at any time from your account. Cancellation takes effect at the end of the current billing period; you retain full access until then.

Lapse means read-only. If a subscription expires or is cancelled, the associated aircraft becomes read-only: you can view everything already in your account, but cannot upload new documents or make changes for that aircraft until the subscription is renewed. Your data is currently retained and remains viewable free of charge.

Free data retention is a courtesy, not a guarantee. We do not guarantee data retention for unpaid or lapsed accounts. We may modify or discontinue free read-only access, and free data retention for unpaid accounts, at any time. If we intend to stop retaining data for unpaid accounts, we will make reasonable efforts to notify you in advance so you can export your data or renew — but we may not always be able to do so, and we are not liable for data no longer retained under this Section. This is one more reason to follow Section 5: the Service is not the system of record, and you must retain your original records.

30-day money-back guarantee. If you are not satisfied, email support@tailcheck.me within 30 days of any subscription purchase or renewal and we will refund that payment in full. The guarantee does not apply to accounts suspended or terminated for violation of these Terms (see Sections 6 and 17). If we issue a refund under this guarantee, we close the refunded account entirely — a refunded account does not convert to a free read-only account, and data associated with it is handled under Section 8 and the Privacy Policy. Export anything you need before requesting a refund.

Changes to pricing and plans. We may change our prices, subscription model, plan structure, free-tier offerings, and payment terms at any time. For existing subscriptions, changes apply at your next renewal, and we will notify you by email before a renewal at a higher price.

Failed payments. If a renewal payment fails, we may retry it. If payment cannot be collected, the subscription lapses to read-only as described above.

8. Your Data and Content

You own your data. You retain all rights to the documents you upload and the data extracted from them ("Your Content"), subject to the licenses you grant below.

License to operate and improve the Service. You grant Tailcheck a worldwide, non-exclusive, royalty-free license to host, store, process, reproduce, analyze, and display Your Content: (a) to operate, maintain, secure, and improve the Service and to provide it to you and to those you choose to share it with; and (b) to develop, train, evaluate, and improve the automated document-processing, extraction, and analysis systems Tailcheck uses to provide the Service, as described in the Privacy Policy.

Deletion. You may delete documents, aircraft, or your entire account. Deletion requests for the full account can be sent to support@tailcheck.me. When you delete Your Content or your account, we delete your personal information as described in the Privacy Policy, and the license in clause (a) above ends with respect to providing the Service to you.

Retained aircraft records. Aircraft maintenance records are records about an aircraft, and an aircraft's history has value that outlives any one account. You agree that, after deletion of Your Content or your account, Tailcheck may retain aircraft information, uploaded documents, and data extracted from them, disassociated from your identity, and you grant Tailcheck a perpetual, irrevocable, worldwide, non-exclusive, royalty-free license to retain and use those materials to operate, secure, and improve the Service (including as described in clause (b) above), to preserve the continuity of aircraft history, and for fraud prevention, dispute resolution, and legal compliance. Improvements to the Service and to Tailcheck's automated systems (including trained models) made while Your Content was on the Service survive deletion of Your Content and termination of these Terms.

Records continuity — records travel with the aircraft. In aviation, an aircraft's records customarily convey with the aircraft. You acknowledge and agree that Tailcheck retains uploaded records in part for safekeeping on behalf of the aircraft's current and future owners, and that Tailcheck may provide copies of the records associated with an aircraft to a person who verifies, to Tailcheck's satisfaction, that they are a current owner of that aircraft or the owner's authorized representative — including a subsequent owner after the aircraft is sold, or an owner whose physical logbooks have been lost or destroyed. Tailcheck determines the sufficiency of ownership verification in its sole discretion and may decline any request. Providing records under this Section does not include providing the uploader's account information.

Records destruction. You may submit a records-destruction request to support@tailcheck.me. We will honor such requests where required by applicable law, and may honor them in our discretion where permissible, taking into account the interests described in this Section.

No sale of your identifiable data; aggregated insights. We do not sell Your Content or your personal information in a form that identifies you. We may, however, analyze data across the Service to develop aggregated or de-identified statistics, trends, and insights — for example, fleet-wide maintenance patterns by aircraft model, component reliability intervals, or comparisons between parts brands — and we may use, license, or sell those insights to third parties such as manufacturers, parts vendors, maintenance providers, and researchers. You grant Tailcheck the right to create and commercialize such aggregated and de-identified data and insights derived from Your Content. Our practices are described further in the Privacy Policy.

9. Sharing and Public Profiles

The Service lets aircraft owners share aircraft data with other users and, optionally, publish a public profile or public report for an aircraft. Sharing and publishing are entirely under the owner's control, except for records continuity as described in Section 8.

You are responsible for what you choose to share or make public. Anyone viewing shared or public data is subject to the same limitations and verification duties described in Section 3, whether or not they hold a Tailcheck account. Tailcheck cannot control, and is not responsible or liable for, what other users or third parties do with data you share with them or make public — including copying, downloading, retaining, or further disclosing it — and revoking access does not retrieve copies already made. Tailcheck is not liable for any third party's reliance on data you share or publish, and you assume all risks associated with making Your Content available to others.

10. Aircraft Sale or Transfer

If you sell an aircraft, you may: (a) delete the aircraft and its data from your account (deletion removes the aircraft from your account and deletes your personal information, but the aircraft's records are retained subject to the retention, records-continuity, and license provisions of Section 8 and the Privacy Policy); (b) keep the aircraft in your account (it becomes read-only when its subscription lapses); or (c) contact support@tailcheck.me to arrange transfer of the aircraft record — and, where applicable, the remainder of its subscription term — to the new owner's Tailcheck account. Subscriptions are not transferable except through this process.

Regardless of which option you choose, Tailcheck may retain the aircraft's records and provide copies to a verified current or subsequent owner as described in Section 8 (Records continuity).

11. Feedback

If you send us suggestions, ideas, or other feedback about the Service, you agree we may use it freely, without restriction or obligation to you. This does not apply to Your Content, which remains governed by Section 8.

12. Intellectual Property

The Service — including its software, design, report formats, structures, workflows, and underlying technology — is owned by Tailcheck and protected by intellectual-property laws. Except for the limited right to use the Service in accordance with these Terms, no rights in the Service are granted to you. All trademarks, logos, and brand elements are the property of their respective owners.

13. Third-Party Services

The Service depends on third-party services, including payment processing, cloud infrastructure, document-processing providers, and aviation data sources. Tailcheck is not responsible for the acts, omissions, availability, or data quality of third parties. Third-party providers to whom aircraft identifiers are transmitted to retrieve data, as described in the Privacy Policy, operate under their own privacy policies and data-use agreements. Links to third-party websites are provided for convenience and do not constitute endorsement.

14. Disclaimer of Warranties

TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SERVICE AND ALL CONTENT, DATA, REPORTS, AND ANALYSES PROVIDED THROUGH IT ARE PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY. TAILCHECK SPECIFICALLY DISCLAIMS ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF ACCURACY, COMPLETENESS, RELIABILITY, MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT, AND ANY WARRANTY THAT THE SERVICE WILL BE UNINTERRUPTED, TIMELY, SECURE, OR ERROR-FREE. NO ADVICE OR INFORMATION OBTAINED FROM TAILCHECK OR THROUGH THE SERVICE CREATES ANY WARRANTY NOT EXPRESSLY STATED IN THESE TERMS.

SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF CERTAIN WARRANTIES, SO SOME OF THE ABOVE EXCLUSIONS MAY NOT APPLY TO YOU.

15. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW:

1. TAILCHECK AND ITS OWNERS, OFFICERS, EMPLOYEES, AND AGENTS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, REVENUE, DATA, USE, OR GOODWILL, ARISING OUT OF OR RELATED TO THE SERVICE OR THESE TERMS — INCLUDING, WITHOUT LIMITATION, DAMAGE TO OR LOSS OF USE OF ANY AIRCRAFT, DIMINISHED AIRCRAFT VALUE, FAILED OR DISADVANTAGEOUS PURCHASE OR SALE TRANSACTIONS, MAINTENANCE PERFORMED OR DEFERRED, REGULATORY ACTIONS OR PENALTIES, OR INSURANCE OUTCOMES — EVEN IF TAILCHECK HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
2. TAILCHECK'S TOTAL AGGREGATE LIABILITY FOR ALL CLAIMS ARISING OUT OF OR RELATING TO THE SERVICE OR THESE TERMS WILL NOT EXCEED THE GREATER OF (A) THE AMOUNTS YOU PAID TO TAILCHECK IN THE TWELVE (12) MONTHS PRECEDING THE EVENT GIVING RISE TO THE CLAIM, OR (B) ONE HUNDRED U.S. DOLLARS ($100).
3. THESE LIMITATIONS APPLY REGARDLESS OF THE THEORY OF LIABILITY (CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY, OR OTHERWISE) AND EVEN IF A LIMITED REMEDY FAILS OF ITS ESSENTIAL PURPOSE, AND THEY SURVIVE TERMINATION OF THESE TERMS.
4. IF YOU ARE DISSATISFIED WITH THE SERVICE, YOUR SOLE AND EXCLUSIVE REMEDY (OTHER THAN AS PROVIDED IN SECTION 7) IS TO STOP USING THE SERVICE AND CANCEL YOUR SUBSCRIPTIONS.

SOME JURISDICTIONS DO NOT ALLOW THE LIMITATION OF CERTAIN DAMAGES, SO SOME OF THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.

16. Indemnification

You agree to defend, indemnify, and hold harmless Tailcheck and its owners, officers, employees, and agents from and against any claims, damages, liabilities, costs, and expenses (including reasonable attorneys' fees) arising out of or related to: (a) your use or misuse of the Service; (b) Your Content, including any claim that it infringes or violates a third party's rights; (c) your violation of these Terms or of any law or regulation; or (d) any decision made or action taken by you or any third party in reliance on information obtained from the Service, including maintenance, airworthiness, purchase, sale, or operational decisions.

17. Termination

You may stop using the Service and close your account at any time. We may suspend or terminate your access (in whole or per aircraft) if you materially violate these Terms, if we detect fraudulent or abusive use as described in Section 6, if required by law, or if we discontinue the Service. Suspension or termination for fraud or abuse may be immediate and without prior notice. On termination for your violation, no refund is due except as required by law; otherwise the 30-day guarantee and read-only lapse rules in Section 7 apply. Data deletion and retention are governed by Section 8 and the Privacy Policy.

18. Changes to the Service or These Terms

We are continuously improving the Service and may add, change, or remove features. We may also update these Terms from time to time. For material changes, we will give notice by email or in-app message before the changes take effect. Your continued use of the Service after the effective date constitutes acceptance of the updated Terms. If you do not agree, stop using the Service and cancel your subscriptions before the changes take effect.

19. Electronic Communications

By creating an account, you consent to receive communications from us electronically — including sign-in links, receipts, renewal notices, support responses, and legal notices — at the email address associated with your account, and through messages within the Service. You agree that electronic communications satisfy any legal requirement that a communication be in writing.

20. Governing Law and Dispute Resolution

These Terms are governed by the laws of the State of California, without regard to its conflict-of-law rules.

Informal resolution first. Before filing any claim, you agree to contact us at support@tailcheck.me and give us 30 days to work with you to resolve the dispute informally.

Class action waiver. TO THE MAXIMUM EXTENT PERMITTED BY LAW, ALL CLAIMS MUST BE BROUGHT IN THE PARTIES' INDIVIDUAL CAPACITY, AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY PURPORTED CLASS, COLLECTIVE, OR REPRESENTATIVE PROCEEDING.

Jury trial waiver. TO THE MAXIMUM EXTENT PERMITTED BY LAW, YOU AND TAILCHECK EACH WAIVE THE RIGHT TO A TRIAL BY JURY IN ANY PROCEEDING ARISING OUT OF OR RELATED TO THESE TERMS OR THE SERVICE.

Time limit on claims. To the extent permitted by law, any claim arising out of or relating to the Service must be filed within one (1) year after the claim arose, or it is permanently barred.

21. Miscellaneous

• Entire agreement. These Terms, together with the Privacy Policy, are the entire agreement between you and Tailcheck regarding the Service and supersede any prior agreements on that subject.
• Severability. If any provision of these Terms is held unenforceable, it will be modified to the minimum extent necessary, and the remaining provisions will remain in full effect.
• No waiver. Our failure to enforce any provision is not a waiver of our right to enforce it later.
• Assignment. You may not assign these Terms or your account without our written consent (except as provided in Section 10). We may assign these Terms in connection with a merger, acquisition, reorganization, or sale of assets.
• Force majeure. Tailcheck is not liable for any delay or failure to perform caused by events beyond its reasonable control, including natural disasters, internet or infrastructure failures, acts of government, or failures of third-party providers.
• Survival. Sections 3, 8 (including the retained-records license, records continuity, and survival of system improvements), 9, 11, 12, 14, 15, 16, 20, and 21 survive termination of these Terms.
• Headings are for convenience only and have no legal effect.

22. Contact

Questions about these Terms? Contact us at support@tailcheck.me.

Tailcheck is not affiliated with, endorsed by, or approved by the Federal Aviation Administration. Always rely on official records and certificated professionals for airworthiness and maintenance decisions.