Is a point at which the pilot needs to begin their descent in order to ensure a stabilized approach and landing. TOD is calculated using a 3 to 1 ratio (3 miles for every 1,000 feet of altitude loss required). For airfields without published crossing restrictions, pilots should plan to be level at 10,000 feet AFE approximately 30 NM from the arrival airfield. For airfields with published crossing restrictions, pilots should plan to be level at all expected or mandatory published crossing restrictions for the procedure they are filed or cleared to fly.
