AT FL350 ACR MLG LOST CABIN PRESSURIZATION AND MADE A RAPID DESCENT TO 16000'.

Narrative

IN CRUISE AT 35000' OFF AIRWAYS DEVIATING S OF COURSE TO AVOID WX; THE CABIN BEGAN CLBING AT ABOUT 300-500 FPM. WHEN IT REACHED 10000' WE DECIDED TO GO TO 14000'. AT FIRST ATC WOULD NOT ANSWER OUR CALLS (BELIEVE HE WAS WORKING 2 FREQS); SO WE STARTED DOWN AND WERE ABLE TO INFORM ATC AT 33500' THAT WE WERE IN AN EMER DSCNT AND WE WERE CLRED ON DOWN TO FL140. DID NOT EVER SQUAWK 7700 AS WE WERE IN CONTACT WITH CENTER SHORTLY AFTER WE BEGAN DSCNT. THE CABIN HELD ITS OWN AT ABOUT FL220; SO WE LEVELED AT FL160 AND CONTINUED ON TO MCI WITH NO FURTHER PROBS. CABIN NEVER GOT OVER 10500' AND PAX WERE BASICALLY UNAWARE OF ANY PROBS. HOWEVER WE DID INFORM THE CABIN WE HAD DSNDED TO A LOWER ALT DUE TO PRESSURE PROBS BUT NOT TO BE ALARMED. PRESSURIZATION WORKED NORMALLY AT FL220 AND LOWER SO FELT NO NEED TO LAND ANYWHERE OTHER THAN OUR DEST OF MCI. PLENTY OF FUEL FOR THE LOWER ALT; ETC. MAINT IN MCI SAID OUR MAIN CABIN DOOR SEAL WAS THE PROB; AS PACKS WERE WORKING FINE THE ENTIRE TIME. AS FAR AS I'M CONCERNED; THIS WAS JUST ANOTHER DAY IN AVIATION. NO BIG DEAL; BUT FELT IT WOULD BE WISE TO INFORM YOU OF THE SITUATION THAT DID OCCUR.