Aviation What is the rule of twelves? March 15, 2026 by pups | Leave a Comment The rule of twelves is a navigational guideline used in aviation, primarily for instrument flight rules (IFR) conditions. It provides pilots with a method to estimate their position relative to a VOR (VHF Omnidirectional Range) station by observing the rate of change in the VOR’s bearing. This rule helps pilots maintain situational awareness and make […] Read more »