AliceTBM Posted October 5, 2019 Report Share Posted October 5, 2019 Trying to get around the globe in the TBM and although I’m not quite there yet I need to figure out how to cross the Pacific from South America without running out of fuel. The longest flight on the trip looks to be 1620nm from Easter Island to French Polynesia (SCIR - SCIP). I’ll have to pick a day with the wind in my favour but I’d rather conserve as much fuel as possible as it’s going to be close. How fast and what altitude is this bird most efficient? Quote Link to comment Share on other sites More sharing options...
AliceTBM Posted October 5, 2019 Author Report Share Posted October 5, 2019 Spotted it on the Daher guide. 252knts @ 31,000ft. Quote Link to comment Share on other sites More sharing options...
RobW05 Posted October 5, 2019 Report Share Posted October 5, 2019 Almost correct, but you shouldn't consider airspeed as the determining factor. Depending on weight you choose a power setting between 46-50% torque and accept whatever airspeed that gives you. You can look that up in the POH under the cruise performance section. Look for the long range cruise tables. Quote Link to comment Share on other sites More sharing options...
AliceTBM Posted October 5, 2019 Author Report Share Posted October 5, 2019 Brilliant, thanks Quote Link to comment Share on other sites More sharing options...
EGT Posted October 20, 2019 Report Share Posted October 20, 2019 (edited) 31000 ft and 50% torque will result in a fuel burn of about 35 gal./hr and 252 kts TAS. That gives an estimated range of 1800 NM with 1 hour reserve. Edited October 20, 2019 by EGT Quote Link to comment Share on other sites More sharing options...
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