PPRuNe Forums - View Single Post - Dassault Falcon 900EX crash, San Diego
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Old 17th Feb 2021, 16:56
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Old Boeing Driver
 
Join Date: Aug 2013
Location: South Alabama
Age: 74
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Originally Posted by 7XDriver
“I've watched another video of a Dassault 900 EX takeoff and noted that there is considerable stabilizer nose up trim used. In the video supplied by Aviationking95, it appears that the stabilizer is trimmed flat, with perhaps even a bit of nose down trim dialed in. Again, referring to Aviationking95's video, at the approximately 0:37 mark, it appears that considerable nose up elevator is being used, yet, the aircraft does not rotate.”



I flew a 900EX for 10 years. And I can tell you at heavy weights, full fuel, you need as much allowable (in the green band) nose up trim as possible. Full fuel runs the cg pretty far forward. And even with that much trim you’ll still have the yoke in your gut to achieve rotation, and that rotation will be much more sluggish that what you’ve been used to at much lighter weights. It’s a real eye opener if you’ve not experienced it beforehand!
I heard they were going to Hawaii. About 2,700 NM. Would they have had a full load of fuel?
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