B777 Question Bank — Support

Karahan Labs

Need help, found an error in a question, or have a feature request? We'd love to hear from you.

Contact

Email: support@karahanlabs.com
We typically respond within a couple of days.

Common questions

• Restore a purchase: Open the app → Settings → Restore Purchases (or the "Restore" link on the upgrade screen), signed in with the same Apple Account.
• Manage or cancel a subscription: iPhone Settings → your name → Subscriptions.
• Reset your progress: App → Settings → Reset Progress.
• Report an incorrect question: Email us the question text and we'll fix it.

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B777 Question Bank is an independent study aid and is not affiliated with, endorsed by, or sponsored by The Boeing Company or any operator. It must not be used for actual flight operations.