Originally Posted by
gipsymagpie
Ok, that's fair - I incorrectly used the +30 line on the top part of the Helipad WAT chart. Do you have the procedure for calculating the TDP? The way the drop-down has to be specified to get the transfer number is a new way of looking at charts for me
All performance including TDP is calculated using the H160 Perfo App which is free on the App Store but needs an aircraft serial specific data pack.