PPRuNe Forums - View Single Post - Miss Velma's engine failure and crash landing at Duxford from the cockpit
Old 20th May 2018, 22:46
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eggplantwalking
 
Join Date: Feb 2003
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Originally Posted by NutLoose
And post accident review, i know its stretching the military side but it is a fascinating insight.

https://www.youtube.com/watch?v=BBpqvPujZgM

https://www.aopa.org/news-and-media/...irport-landing



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The guy did about everything wrong and doesn't know the best glide speed in the P-51 with gear and flaps up is 175MPH, not 150MPH. Additionally, the dash one calls for the canopy to be jettisoned in this case, and it weighs about 40 lbs, not 300lbs. The video clearly shows his problem and it is a fuel issue with fluctuating pressure. The normal fuel pressure in flight is 16 to 18 pounds. The fuel pressure drops significantly in the video but the pilot doesn't seem to notice this and its correlation to loss of power. It appears that he attempted to switch tanks and this should have cured the pressure problem as each tank has an electric fuel pump submersed in it. However, the fuel tank pumps will not come on line, if the boost pump switch on the engine control panel is not selected to the "ON" position as it is wired in series with the fuel tank selector. Additionally, he could have tried holding the engine primer switch down which would put fuel directly into the induction manifold and give him partial power. With a few hundred hours in the Mustang I disagree with most of the decisions made by the pilot, but at least he walked away and that's a big deal.
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