How many letters does the top answer for “a person who jumps from aircraft using a parachute” have?

The most common answer is parachuter (10 letters).

Crossword clue: a person who jumps from aircraft using a parachute

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

parachuter 10 letters wn-def

a person who jumps from aircraft using a parachute

parachutist 11 letters wn-def

a person who jumps from aircraft using a parachute