I am trying to create an aircraft profile for PFPX so this program calculates the flightplan based on the correct data. I found most of the needed data in the Charts (although most digits are difficult to read*). But I have some questions to get a good aircraft profile. 1. In the charts there a two descent profiles each based on a descent of 3.000 feet per minute. I thought that in real life a more modest descent is flown. What is the usual descent speed and how can I get or calculate the right performance data for it? 2. What are the optimum en maximum altitudes for the Saab 340A related the weight of the plane. 3. What is the fuel use per minute while taxiing * I would welcome a better readable Charts document.