Terms of Service
These Terms of Service ("Terms") govern your use of the HangarGuard platform, website, mobile applications, and text messaging program (together, the "Service"). The Service is provided by S4 Integrations LLC, a Michigan limited liability company operating as HangarGuard ("HangarGuard," "we," "us"), 791 Case Karsten Dr Unit 3, Zeeland, MI 49464. By creating an account or using the Service you agree to these Terms and to our Privacy Policy.
1. What the Service is
HangarGuard helps fixed base operators (FBOs) create photo-backed condition and custody records for aircraft they handle, and shares those records with the aircraft's owners and pilots. Records are created by FBO staff and are the FBO's business records. HangarGuard stores and displays them; it does not inspect aircraft, certify airworthiness, or replace any inspection required by regulation.
2. Accounts
You must be at least 18 years old and provide accurate information to create an account. You are responsible for activity under your account and for keeping your login credentials confidential. FBO administrators may invite staff and customers; each invited person must accept the invitation and agree to these Terms themselves before their account is active.
3. SMS terms and conditions — HangarGuard notifications
Program name: HangarGuard notifications, sent by S4 Integrations LLC operating as HangarGuard.
Program description: If you opt in, HangarGuard sends SMS text messages to the mobile number on your account containing one-time login codes, notifications about aircraft you own, fly, or service (such as arrival assignments, walk-around reminders, fueling and readiness status, and report availability), a link to the aircraft's custody record, and replies from FBO staff to your questions. You may reply to those messages to communicate with FBO staff. No marketing or promotional messages are sent.
How to opt in: by entering your mobile number and ticking the unchecked text-notifications box on the HangarGuard sign-up or claim page, then replying Y to the one confirmation text we send. We send nothing else until you reply Y.
Message frequency varies depending on account activity.
Message and data rates may apply. Check with your wireless carrier for details.
You can cancel the SMS service at any time. Just text "STOP" to the number you received messages from. After you send the SMS message "STOP" to us, we will send you an SMS message to confirm that you have been unsubscribed. After this, you will no longer receive SMS messages from us. If you want to join again, sign up as you did the first time or reply START, and we will start sending SMS messages to you again. You can also turn text notifications off in Profile → Notifications.
If you are experiencing issues with the messaging program you can reply with the keyword HELP for more assistance, or you can get help directly at swolters@s4integrations.com or (616) 288-2665.
Opting in is not a condition of using the Service. If you do not opt in, or you opt out, you will still be able to use HangarGuard and receive notifications by email and in the app.
Carriers are not liable for delayed or undelivered messages.
Our handling of your mobile number and opt-in information is described in our Privacy Policy. No mobile information will be shared with third parties or affiliates for marketing or promotional purposes. We do not sell or share your SMS opt-in data or personal information with third parties for marketing purposes.
4. Acceptable use
You agree not to use the Service to upload unlawful content, to access records you are not authorized to see, to interfere with the Service or its security, or to send messages through the Service that are abusive, deceptive, or unrelated to aircraft service. We may suspend accounts that violate these Terms.
5. Records, photos, and data
Photos, notes, and other records created through the Service belong to the FBO that created them. Aircraft owners and pilots are granted access to records about their aircraft. You grant HangarGuard a license to store, process, and display this content as needed to operate the Service. We retain records according to the FBO's settings and applicable law.
6. Disclaimers and limitation of liability
The Service is provided "as is." To the fullest extent permitted by law, HangarGuard disclaims all warranties, express or implied, and is not liable for indirect, incidental, or consequential damages, or for any damage to aircraft. HangarGuard's total liability for any claim relating to the Service is limited to the amount paid to HangarGuard for the Service in the twelve months before the claim. Nothing in these Terms limits liability that cannot be limited by law.
7. Changes
We may update these Terms. We will post the new version here with a new effective date and, for material changes, notify account holders by email or in the app. Continued use after the effective date means you accept the updated Terms.
8. Governing law and contact
These Terms are governed by the laws of the State of Michigan. Questions about these Terms: swolters@s4integrations.com, (616) 288-2665, or by mail at the address above.