Part 135 compliance tools
The same engines that gate a quote inside Clearspar — free for any operator or pilot. Every finding cites the regulation.
Duty & Rest Calculator
Is this assignment legal? Check the 24-hour flight limit, rest, duty period, and cumulative limits — with the citation.
FRAT Builder
Score a trip’s risk (GREEN / AMBER / RED) across duty, night, short-notice, currency, and more. SMS-ready.
Currency Checker
Day and night 90-day takeoff/landing recency for PIC — know before you assign.
Charter Cost Calculator
Estimate an all-in charter price — hours, minimums, positioning — with 7.5% FET and segment fees computed and cited.
Part 135 or Part 91?
Walk the compensation and holding-out factors to see whether an operation needs a Part 135 certificate. Not legal advice.
Jet Size Classes
Light, midsize, super-mid, heavy and ultra-long-range — typical pax, range, and example aircraft types.