RE: Largest single engine prop plane?
Chris:
Your Airtractor has the span, 58 feet to the AD-1's 51 feet, but the gross weight? The AT max is 16,000 pounds, the AD1 has a gross TO weight of 25,000 pounds.
Yours is larger size, mine is larger mass. Depends on definition of 'biggest."
And the Skycrane helicopter will carry either of these two fixed wing planes.While it's multi engined, it still has only one "Propellor."
Bill.