Maximum Elevation Figures and Safety Altitude | UK PPL Ground School

The UK half-mil and quarter-mil charts divide into quadrangles, each with a maximum elevation figure in thousands and hundreds of feet above mean sea level: the higher of the highest obstacle or the highest terrain plus 300 ft, because obstacles under 300 ft are not always in the data. The figure has no safety margin; in the chart legend's words, it is not a safety altitude. The video shows how to plan a VFR safety altitude from the highest feature within at least 5 NM of track, plus 500 or 1,000 ft, and to turn back or divert rather than descend below it. Full course, question bank and radio practice: https://ukgroundschool.co.uk/?utm_sou... Sources: CAA ICAO 1:500,000 and 1:250,000 chart legends (2025), CAA Skyway Code (CAP 1535P), CAA Safety Sense 05 (Flight under VFR), UK AIP GEN 3.2 (aeronautical charts) For training support only; always follow your aircraft's flight manual and current official publications. Keep learning: Every PPL Flight Performance & Planning lesson, in order:    • PPL Flight Performance & Planning: Every L...   Full UK PPL course: https://ukgroundschool.co.uk/?utm_sou...