What was found
AFTER TAKEOFF, CREW COULD NOT GET THE A/C TO PRESSURIZE. FLT ATTENDANT REPORTED AN AIR LEAK COMING FROM FWD ENTRY DOOR. ALL OTHER INDICATIONS NORMAL. FLT RETURNED TO FIELD AND LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY DECLARED. MX FOUND FORWARD ENTRY DOOR PARTIALLY OPEN AND FALSLY LOCKED. PERFORMED VISUAL INSPECTION OF DOOR SEAL. OPERATED AND CLOSE DOOR. DOOR CHECKS GOOD. RA NR 2 ENGINE AND PRESSURIZED AIRCRAFT. NO LEAKS NOTD AT FORWARD ENTRY DOOR. MAINTENANCE ALSO FOUND TWELVE INCHES OF AFT CARGO DOOR SEAL BLOWN. REINSTALLED SEAL AND PERFORMED HULL LEAK RATE TEST PER MM 05-51-91. LEAK TEST GOOD. AS A FOLLOW UP, A RIGGING CHECK IS SCHEDULED TO BE ACCOMPLISHED ON THE FORWARD ENTRY DOOR. (M)