En-Route Multi Engine Aircraft – 2 Engines Inoperative Page Discussion History Wikis > Preflight > En-Route Multi Engine Aircraft – 2 Engines Inoperative En-Route Multi Engine Aircraft – 2 Engines Inoperative Note: If the navigational accuracy does not meet the 95 % containment level, an operator must increase the width margin given above to 18,5km (10NM). Source: EU-OPS Share this:FacebookTwitterLinkedInEmailPrint