WHILE ENROUTE; FLT CREW WROTE-UP R PACK FOR TRIPPING OFF. CONTRACT MAINT SAID LEFT PACK OUT OF OIL. LEFT PACK DEFERRED INOP. MAINT CONTROL SAID R PACK PROBLEM CAUSED BY LEFT PACK. PILOT REFUSES ACFT. FLIGHT CANCELED. ON FERRY FLT; R PACK FAILS; NO PRESSURIZATION.

Narrative

ENRTE; WE WROTE UP THE R PACK FOR TRIPPING OFF. UPON ARR AND AFTER THE CAPT COORD WITH MAINT CTL AND DISPATCH; A CONTRACT MECH WAS CONTACTED TO EXPLORE THE PROB. HE DISCOVERED THE L PACK WAS OUT OF OIL. SERVICING IT APPARENTLY WAS BEYOND THE SCOPE OF HIS CAPABILITY. SO; THE L PACK WAS DEFERRED INOP LEAVING ONLY THE REMAINING PACK WE HAD THE PROBS WITH. MAINT CTL CONCURRED WITH THE L PACK DEFERRAL STATING THEIR POS THAT THE REASON THE R PACK HAD PROBS WAS BECAUSE OF THE L PACK. THE CAPT CONSULTED WITH ME; WE DISCUSSED IT AND DECIDED TO REFUSE THE AIRPLANE. THE FLT WAS CANCELED AND WE LATER AGREED TO A ONE-TIME FERRY FLT FOR MAINT. IMMEDIATELY ON CLBOUT; WE HAD THE SAME R PACK PROBS WHICH RENDERED THE AIRPLANE WITHOUT PRESSURIZATION. I DO NOT UNDERSTAND THE RATIONALE BEHIND MAINT CTL'S/DISPATCH'S DEFERRAL. HAD WE FLOWN ACFT X AS PLANNED; WE WOULD HAVE ENDED UP WITH A PLANE FULL OF PAX STRANDED AT AN OUT-BASE AND VERY POSSIBLY MAJOR PHYSIOLOGICAL INCIDENTS HAD OUR AIRPLANE DECIDED TO GIVE OUT AT CRUISE AT FL240. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: REPORTER STATED WHEN THE REMAINING RIGHT AIR CONDITIONING PACK FAILED AFTER TAKEOFF ON THEIR FERRY FLIGHT TO A MAINT BASE; BOTH HE AND THE CAPTAIN KNEW THEY HAD MADE THE RIGHT DECISION IN REFUSING THE ACFT EARLIER FOR CONTINUED REVENUE SERVICE.