What was found
MASTER WARNING ILLUMINATED ON TAKE OFF CLIMBING THROUGH 1000'. FUSELAGE DOORS WARNING ILLUMINATED BAGGAGE DOOR OPEN LIGHT ILLUMINATED ON MFD. RETURNED TO FIELD, LANDING UNEVENTFUL. FIRE & RESCUE REPORTED DOOR SECURE WITH T-HANDLE EXTENDED. LARGE DECOMPRESSING NOISE HEARD ON FLIGHT DECK AND REPORTED BY FA. INSPECTED AFT BAGGAGE DOOR HANDLE IAW HS 05-0029. HANDLE IS SECURE AND FLUSH WHEN CLOSED. HANDLE OPERATES FREELY WHILE OPENING AND CLOSING. OPS TEST OF AFT BAGGAGE DOOR IS GOOD IAW AMM 52-31-00-710-801. ALSO, INSPECTED AFT CARGO BLOWOUT PANEL FOR DEFECTS. PANEL IS SECURED AND FLUSH ALL THE WAY AROUND. NO DEFECTS NOTED. RETURNED TO SERVICE.