Hour building is the phase where a licensed pilot accumulates the flight experience required for the next licence — typically PIC hours between PPL and CPL. For schools it is high-volume, low-instruction rental flying that depends on efficient scheduling and aircraft availability.
Hour building is the phase between licences in which a pilot accumulates the flight experience required for the next step — most commonly building PIC and cross-country hours between the PPL and the start of CPL training, where EASA requires 150+ hours total time (200 for the licence) and the FAA route requires 250. Pilots hour-build by renting aircraft, sharing costs with other pilots where rules permit, flying club aircraft, or combining building with qualifications such as the night rating.
For schools and clubs, hour building is a distinct commercial segment: high-volume rental flying by licensed pilots who need availability and attractive block rates more than instruction. It fills aircraft capacity outside training peaks — but also demands robust rental controls, since these pilots operate with minimal supervision.
Why it matters for flight schools
Hour builders are simultaneously a revenue opportunity and a risk category. They fly a lot, book flexibly and pay reliably — but they are also low-experience PICs operating school aircraft solo, making currency verification, checkout validity, weather limits and booking rules genuinely load-bearing. Schools that systematise rental compliance capture the segment safely; those that rely on the front desk remembering each renter's status eventually dispatch someone they shouldn't have.
How FlightLogger handles it
FlightLogger enforces rental rules at booking: checkout validity, currency, medical and school-specific limits are verified automatically, so hour builders get the self-service availability they want while the school keeps systematic control.
Frequently asked questions
How many hours do I need before starting CPL training?
Under EASA, CPL issue requires 200 hours total (150 to start modular training, with specified PIC and cross-country components); the FAA requires 250 hours for the commercial certificate. Exact sub-requirements differ, so pilots should plan hour building against the specific licence route.
Can two pilots log the same hour-building flight?
Generally no — only the acting PIC logs the time, and cost-sharing arrangements do not change logging rules. Misunderstanding this is a classic cause of logbook discrepancies discovered years later at airline assessment.