When an employer ends a pension plan. Employers can end a pension plan through a process called plan termination.. There are two ways an employer can terminate its pension plan. The employer can end the plan in a standard termination but only after showing PBGC that the plan has enough money to pay all benefits owed to participants.
While one engine can keep the other prop spinning, if both engines go out it has no autorotational capability. The Osprey can fly on a single engine and in most cases land on a single engine. Most times you cube out on cargo way before you get anywhere near weighing out.
On the plus side: Light boats with small outboards can go all day on amazingly little fuel. Case in point: My Hobie 15 with a Yamaha 50 (two-stroke) can run far offshore, troll all day and return with plenty of fuel to spare in the two 6-gallon portables under the console.