14 CFR 135.293 / 135.297 / 135.299 / 135.331 / 61.56
Initial vs. Recurrent Training Matrix
Every Part 135 training requirement — what is required before first duty, what recurs, and at what interval. Filter by crew role and click any item for the full citation.
Initial only6 calendar months12 calendar months24 calendar monthsPer training program
Advisory only. Training requirements vary based on your OpSpecs, GOM, and FAA-approved training program. Calendar month intervals mean through the end of the same-numbered month. Consult your Director of Operations and Director of Training.
Frequently asked questions
What is the difference between initial and recurrent training in Part 135?
Initial training is completed before a crewmember may perform a function — e.g., before serving as PIC, before conducting IFR operations, or before carrying passengers. Recurrent training is repeated at a specified calendar-month interval to maintain currency. Many Part 135 recurrent events use 12-calendar-month intervals, meaning the event must be completed by the end of the same-numbered month in each calendar year.
What is a calendar month interval and how do I calculate it?
A calendar month interval (e.g., "within the preceding 12 calendar months") means through the end of the same-numbered month. If a pilot's competency check was completed on March 10, 2025, it is current through March 31, 2026. The check can be completed up to 31 days early without losing the original expiration date — so completing it in February 2026 keeps the March 31 expiration.
Does a Part 135 competency check satisfy the flight review (BFR) requirement?
Yes. Under 14 CFR 61.56(d), a pilot who has passed a proficiency check under 14 CFR 135.293 within the preceding 24 calendar months does not need a separate flight review. The competency check serves as the BFR. However, the competency check itself must still meet the 135.293 requirements.
What is the instrument proficiency check (IPC) interval for Part 135?
Under 14 CFR 135.297, Part 135 pilots who conduct IFR operations must complete an instrument proficiency check within the preceding 6 calendar months. This is more frequent than the Part 61 instrument currency requirement (6 approaches + hold + intercept in the preceding 6 months). The check must be conducted in the specific aircraft type or an approved FTD/simulator for that type.
How often is CRM training required?
The CRM training interval is not set by a single CFR citation — it is determined by your FAA-approved training program and operations specifications. Most operators conduct initial CRM as part of indoctrination training and recurrent CRM annually or as part of the simulator training event. The specific interval is documented in your approved training program and reflected in A006 of your OpSpecs.
Clearspar tracks every training due date for every crewmember in your roster.
The dispatch gate checks IPC, competency check, line check, and BFR currency before assigning crew — no more spreadsheets, no more manual date math.
See Clearspar