What was found
SHORTLY AFTER DESCENT FROM FL250 THE AFT FUSELAGE DOOR MASTER WARNING LIGHT ILLUMINATED BUT NO LOSS OF PRESSURIZATION OCCURRED. AT 8000FT THE AIRCRAFT STARTED TO DEPRESSURIZE. NO NEGATIVE EFFECTS ON PASSENGERS AND CREW. REAR FLIGHT ATTENDANT REPORTED, HEARD BAGS MOVING IN THE CARGO AREA, CAPTCONFIRMED WHEN CARGO DOOR WAS OPENED BAGS WERE LEANING AGAINST THE DOOR. THE CAPT ALSO NOTICED THAT THE CARGO DOOR HANDLE WAS POPPED OPEN BUT THE DOOR WAS STILL FLUSH WITH FUSELAGE. CREW FOUND HANDLE IN UNLOCKED POSITION. CONTRACT MX PERFORMED OPS CHECK OF AFT BAGGAGE DOOR PER AMM 52-31-00-710-801.