What was found
***SUPPLEMENTAL INFORMATION***(REG# TYPO CORRECTION) DURING AN OPERATIONAL CHECK FLIGHT FOR THE PRESSURIZATION SYSTEM AND JUST REACHING CRUISE FLIGHT 16000 FT., CABIN DEPRESSURIZED. DECLARED AN EMERGENCY FOR DESCENT TO 10,000. RETURNED TO KBTL. LANDING WAS UNEVENTFUL. MAINTENANCE FOUND THE LINES TO THE PRESSURIZATION CONTROLLER INSTALLED INCORRECTLY. REPOSITIONED THE LINES TO PROPER CONFIGURATION. A SUCCESSFUL OPERATIONAL CHECK FLIGHT WAS PERFORMED. AIRCRAFT WAS RETURNED TO SERVICE.