Nobody should quote you a maximum transport time.
Organs, tissue, blood products and clinical trial material move to a window set by the clinical team, not by us. We plan to that window, building the routing so the aircraft is the fastest part of it rather than the slowest.
The Council of Europe's own guide declines to set optimal cold ischemia times, on the ground that fixed numbers cause usable organs to be discarded. What it does flag is a foreseen cold ischemia time over four to five hours for a heart, meaning net transport over two to three hours.
