What was found
DURING CLIMB OUT, THE AIRCRAFT FAILED TO PRESSURIZE. THE SOUND OF RUSHING AIR WAS HEARD. FOLLOWED THE CHECKLISTS AND COULD NOT GET THE PLANE TO PRESSURIZE. A DECISION WAS MADE TO RETURN FOR LANDING AND AN EMERGENCY DECLARED. DURING A POST FLIGHT INSPECTION, THE EMERGENCY EXIT WAS FOUND SLIGHTLY AJAR. THE EXIT WAS RE-POSITIONED TO A NORMAL SETTING. NO OTHER PROBLEMS WERE NOTED. THE FLIGHT WAS RE-RELEASED AND NO OTHER PROBLEMS ENCOUNTERED. UPON LATER INSPECTION AT THE HOME BASE IT WAS DETERMINED THAT LIKELY THE DOOR LATCHING MECHANISM COULD BE EASILY UNLATCHED BY A STRAY CORD OR STRAP FROM MOVING MEDICAL EQUIPMENT.