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On Mar 6, 6:33 am, "Ash Wyllie" wrote:
James Sleeman opined On Mar 6, 2:42 pm, Orval Fairbairn wrote: We lost a friend yesterday in a Baron C55. He lost the left engine on takeoff, apparently stalled, went inverted and lawn darted into the Let it serve as a reminder to all pilots, especially the twin jockeys, to practice those engine outs. During take off, it is best to think of a light twin as a very expensive, and unreliable single. If an engine stops, land straight ahead. -ash Cthulhu in 2007! Why wait for nature? Ash, That is pretty much my take on light twins. If you lost an engine on takeoff at low altitude you are better off chopping both throttles and landing it. Only turbine twins typically have enough power to climb out on a single engine without having to operate near VMC. Dean |
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![]() wrote That is pretty much my take on light twins. If you lost an engine on takeoff at low altitude you are better off chopping both throttles and landing it. Only turbine twins typically have enough power to climb out on a single engine without having to operate near VMC. Do they have enough power to get safely above VMC, if the nose is brought down, so only a 100 or 200fpm climb rate is achieved? -- Jim in NC |
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That is pretty much my take on light twins. If you lost an engine on
takeoff at low altitude you are better off chopping both throttles and landing it. Only turbine twins typically have enough power to climb out on a single engine without having to operate near VMC. Do they have enough power to get safely above VMC, if the nose is brought down, so only a 100 or 200fpm climb rate is achieved? -- Jim in NC I left this question wait until evening, mostly in the hope that one of the multi-engine instructors on the group would pick it up and respond--so as not to leave it for a lowly former student pilot. (sigh) In any case, the answer to the question as specifically phrased is probably "no". However, that may be trivial, since AFAIK it should mainly apply in the special case of a "go" decision with an engine failure at rotation--many twins be flown successfully from that situation and the parameters should be covered in the POH. My recollection is that is was covered for the 301D, as an example. There are some considerations: 1) For most light twins, V-speeds are only published for maximum permitted weight, but will actually vary with weight and CG. 2) For most light twins, VMC is only published for standard sea level density altitude, but will vary with density altitude. 3) Light twins are not required to have a single engine ceiling above standard sea level, although many do. However, twin owners are generally quick to point out that a twin with one engine operating will typically have a favorable "drift down" profile when operating above the single engine ceiling. 4) Some (perhaps many--I don't know the statistics) light twins have a best twin engine angle of climb speed less than VMC, and some _may_ have a best twin engine rate of climb speed below VMC as well. (That possibility scares the crap out of me!) In the scenario suggested by the question--of an in flight failure at VMC during the initial climb--it would probably be necessary to lower the nose sufficiently for a 100 to 200 fmp NEGATIVE climb to achieve the best rate on climb speed. It could also be necessary to temporarily reduce power on the operating engine in order to regain yaw control--especially if you were not VERY quick with the rudder. The best source that I know of for good information on the actual correct procedures is to attend one or more of the FAA seminars. The so-called "Pilor/Controller" forums are frequently hosted by the local Safety Program Coordinator for Flight Standards--who are very accomplished pilots in addition to their other qualifications. They really are the ones to ask, and they are not involved in enforcement during the years that work as Safety Program Coordinators. To find an event near you, visit http://www.faasafety.gov/SPANS/default.aspx and enter your zip code and the distance you are willing to travel. You will gain excellent information, meet your fellow pilots and enthusiasts, and also be elegible for credit under the "Wings" program. Peter |
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wrote in message
That is pretty much my take on light twins. If you lost an engine on takeoff at low altitude you are better off chopping both throttles and landing it. Only turbine twins typically have enough power to climb out on a single engine without having to operate near VMC. It's been a while since I've flown a B-55, but I do remember that with just 1 person onboard, the single-engine performance at sea-level is adequate. Poor technique and/or the fuel selectors being on the aux tanks is more likely to be the cause. D. |
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