Aviation & Real-World Flying Flight Planning & FMC Questions & Answers

Flight planning questions often sit between real-world procedure and simulator practice. This hub explains what the FMC is, how pilots use Cost Index to balance time and fuel, and why an entered route or performance value may produce an unexpected result. It also covers terminology shared across aircraft and simulators without treating every FMC implementation as identical.

Practical navigation topics include estimating top of descent with the 3-to-1 rule and measuring route distances in Google Earth before a flight. Answers are written and tested by the Fly Away team, with assumptions, units and limitations made clear so readers can apply each method sensibly in the cockpit or their preferred simulator.