A few weeks ago i was flight from Annemasse (LFLI) into the Mont-Blanc-Massiv (Top of Europe) with my B47-G3B1.
At 15’700ft i have stop climbing to avoid any Oxygen-Problems.
A hover-check HOGE with just 50kg below MTOW read out 400ft/min!!!
A few pictures find below.
www.adpro-ltd.ch/bilder/20060316megeve