StacksVerified U.S. regulatory reference

14 CFR §29.239

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
If certification for water operation is requested, no spray characteristics during taxiing, takeoff, or landing may obscure the vision of the pilot or damage the rotors, propellers, or other parts of the rotorcraft.