http://www.pprune.org/tech-log/9934-pnr-usage.html
Thread where I explain some manual calculation methods & shortcuts for ETPs & PNRs in the cockpit.
http://www.pprune.org/tech-log/10820...lculation.html
Thread were
Flat Side Up explains an excellent method for PNR calculation which has
one slide rule set up which displays Time, Distance and Fuel Burn.