I'm learning how to use the flight computer as we speak. It's the ASA issued one. Anyway, the instruction book has examples and I'm going through them pretty easily. The thing isn't as complicated as I thought it was going to be, despite the poor writing in the manual. I am having an issue matching my result with the answer in the book. It's a question of fuel consumption, endurance, and capacity. Gallons/hr = 8.5 Total Used = 38 I move the rate arrow to 8.5 and look over at 38 and it looks to be roughly 4:34 The book's answer is 4:28. Not sure what I'm missing but I got all the other ones right. Can someone please confirm or let me know how I'm doing it wrong? I've attached images of my e6-b as illustration. Thanks in advance Sent from my big plastic brick.