>Bottom line. When (if) you lose that engine after takeoff, picthing for and maintaining Vyse is the only way to go. Each knot above or below Vyse means reduced climb performance (by definition).

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DennisFirstly I find this conversation very interesting so thanks for that.Vyse is not some magic figure that must be pegged in the event of an engine failure otherwise if you shut down an engine in the cruise you would then reduce your cruise to Vyse which is obviously nonsense.Vyse is only relevant to climbing an aircraft with one engine out.If conditions are such that you are infact flying level with no climb at Vyse then I suggest that the aircraft is on the back of the drag curve.Any pitch to climb the aircraft will change the angle of attack hence increasing induced drag and any sort of drag is the last thing you need.You need altitude so to get that altitude you are placing the aircraft in a negative tradeoff to achieve that altitude comnpared to the same aircraft trimmed for level flight.I can guarantee that after a single engine climb you will only relax once the aircraft is trimmed in the cruise and I know which feels better and which has less relevant drag.Taking the Seneca five are you suggesting that the aircraft will behave better at 89 kts Vyse than 120 kts single engine level cruise?I know your not.I feel the problem between us on this is divorcing a climbing aircraft or one thats attempting to climb from one in the cruise even if its a single engine level cruise, Vyse is only relevant to attempting a climb and not to a level cruise.All my arguement is about is that there are situations where you are better to forget futile attempts at a climb and go for a cruise instead.Otherwise why level off at all? At what height would you level 500 feet? 1000 feet 2000 feet? altitude is only relevant to terrain avoidance and having some air below the aircraft to trade off for speed if you need it.All the best and no hard feelings Peter

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