IJN planes were capable of dropping torpedos at maximum: 180 mph, 350 feet altitude, and the torpedos ranged 1500 yards. The early USN torpedo planes were inferior in many aspects, and had to drop at maximum: 110 mph, 150 feet altitude, and torpedos ranged 1000 yards.
I think the maximum altitude and speed for dropping torpedos improved with the introduction of TBF(TBM) Avenger, but not sure.
In AH, the 200 mph, 200 feet seems to apply.