What was found
ARRIVED AT DESTINATION, WHEN OPENING THE L1 MAIN ENTRY DOOR, IT WAS NOTED THE LOCK STAY (GUST LOCK) WOULD NOT ENGAGE WITH THE DOOR COMPLETELY OPEN. MX CALLED AND WAS PROVIDED WITH THE TSM AND AMM REFERENCES TO START TROUBLESHOOTING. UPON GAINING ACCESS TOT HE LOCK STAY, NOTED DEBRIS DESCRIBED AS AN INSULATION POUCH THAT WAS IN THE MECHANISM THIS WAS REPOSITIONED AND THEN DOOR OPERATED NORMALLY. THE ACFT WAS PLACED BACK IN SERVICE AND DEPARTED AS FLIGHT 283 AFTER A 52 MINUTE DELAY. MX ISSUED AN RMA FOR FURTHER DETAILED INVESTIGATION. MX ADJUSTED DOOR STOP, REF AMM 52-11-00-05. ACCORDING TO THE OPERATORS RECORDS. ALL AD, SB, STC AND PMA ARE IN FULL COMPLIANCE WITH THE TYPED DESIGN CERTIFICATE AND ASSOCIATED REQUIREMENTS.