• Apple released it's annual update - iOS 17 for both iPhones and iPads. After preliminary testing we see no issues with both Logbook Pro and APDL on iOS 17. We will continue our thorough testing with the public release and follow up should we find any issues.

    We are giving a green light on iOS 17 for all of our iOS apps.

FAR 121 and 135 Features


Well-known member
APDL Beta Team
Dec 9, 2003
Chicago, IL
How do you use the 121 and 135 functions?
When I enter time in LBP on the desktop, how does it know that it's under part 121?
Logbook Pro does not have a way at this time to delineate FAR 121 and FAR 135 flights if you fly mixed FAR flights. The system is designed more for those that fly specifically FAR 121, as an example. We'll have this improved in the next release. For "pure" FAR 121 numbers Airline Pilot's Daily Aviation Logbook is recommended.