MH-53E Sea Dragon: The U.S. Navy’s MH-53E Sea Dragon had a class A mishap rate of 5.96 per 100,000 flight hours from 1984 to 2008, which was more than double the Navy’s average of 2.26. This rate refers to serious damage or loss of life.
Mishap rate
The Osprey’s 10-year average mishap rate is 3.43 per 100,000 flight hours, which is in the middle of other aircraft flown by the Marine Corps