Hi Guys,
On the point of trying to get the coffin into the Learjet, yes, it may be able to be configured as an air ambulance but part of the kit would presumably include a custom designed aero-medical stretcher which would fit in the door.
I don't think the door of the learjet was designed with a coffin in mind. The CASA would have been more suitable for the job but that probably wasn't available.
Regards,
Frank.