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The accounts that I've read do not mention any roll or "Vmc" roll, they all
seem to indicate that the airplane was upright and controlled until impact. Successful single engine operation in twins requires both control and performance. Usually a configuration that increases control decreases performance and vise versa. I did not read anything about of loss of control, only lack of performance. Whether their airplane was configured properly to obtain the performance required and whether it was capable of obtaining the required performance, I think, are the questions. The Navajo, configured properly, "should" be controllable and capable of a climb of around 250 fpm with full power on the good engine, sea level, standard conditions, at full gross weight. Ankeny is about 900 feet, temps were in the 50's, accounts say only two people on board, no mention of weight or baggage. If it was an engine out situation would be interesting to know if the bad engine's prop had been feathered, if the gear and flaps were up or down, and if the operating engine was making full power. For those in the group that are not familiar with single engine operations in twins, excess drag created by a windmilling prop, extended flaps, and extended landing gear can, and probably will, create more drag than a single engine can overcome. The airplane may be longitudinally controllable if kept above the Vmc speed for the conditions and configuration, but the airplane may be so "draggy" that a climb is not only impossible but it is descending at a abnormally high rate. Jim "Jay Honeck" wrote in message oups.com... 2 guys killed in an attempt to return to the airport on a single engine. http://www.kcci.com/news/5281008/detail.html# My condolences to the families. -- Jay Honeck Iowa City, IA Pathfinder N56993 www.AlexisParkInn.com "Your Aviation Destination" |
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