solar proton events

aviation radiation crew radiation exposure FAA Advisory Circular 120-61B polar routes space weather

Cleared Direct Sep 14, 2026

Solar Proton Events, Polar Route Rerouting, and the FAA Guidance That Classifies Flight Crews as Radiation Workers

FAA formally classifies pilots and flight attendants as radiation workers - here's what Solar Cycle 25's peak means for polar route operations.

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