maandamistoiming, mille puhul langemiskiirus on suurem kui 30 jalga (u 9 m) sekundis (väikese kiirusega maandamine) ja väiksem kui vabamaandamise kiirus
a drop procedure in which the drop velocity is greater than 30 feet per second (low-velocity drop) and lower than free-drop velocity
an airdrop in which the falling speed is slowed by a parachute but still exceeds 30 feet per second
