Without personal experience of a loss of pressurization in my IV after 120 hrs I can only make a comment based on previous accidents. Initially 2-3 lancairs went down with engine stoppage and loss of pressurization following turbo duct separation. Charlie Kohler's manual indicates a process to restart the engine after reaching 12-10K altitude. Loss of pressurization without engine stoppage may indicate partial loss of turbos and not cabin integrity fault. Having flown my 182 turbo for years at 20K and experienced O2 depletion a few times due to incomplete tank filling and connecting hardware I can attest to the ability of the pilot to descend to a more oxygen appropiate environment without declaring an emergency. I will be tempted to make an emergency landing at the closest airport rather than a leisure descent.

andres 18AK