Final answer:
The ACES II drogue canopy uses a 24-thread size for the suspension line replacement.
Step-by-step explanation:
The ACES II drogue canopy uses a 24-thread size to replace the suspension line. The suspension lines are an important part of the drogue canopy, which helps slow down and stabilize the aircraft during ejection.
The 24-thread size is designed to provide the necessary strength to withstand the forces experienced during parachute deployment and landing.