What was found
AFTER TAKEOFF, DELAYED LANDING GEAR RETRACTION FOR 1 MINUTE AND BELOW 220 KIAS IAW MEL 32-42-01B. UPON LANDING GEAR RETRACTION, ENCOUNTERED A VIBRATION AND RUMBLING. RECEIVED THE ECAM MESSAGE L/G DOORS NOT CLOSED. LANDING GEAR LEVER WAS UP PER ECAM PROCEDURE, RECYCLED L/G LEVER. L/G RETRACTED AND L/ G DOORS CLOSED. DEFERRED LANDING GEAR RETRACTION SYSTEM PER MEL 32-31-02. M PROCEDURES C/W AND PLACARD INSTALLED. COMPLETED INSP AND FUNCTIONAL TEST OF NLG IAW A319AMM 32-31-00. NTF. STRUT SERVICE COMPLETED. REVERSED M PROCEDURE. LG SAFETY DEVICES REMOVED. VMO SWITCH SET TO NORMAL. REMOVED MEL AND PLACARDS. OK FOR SERVICE. (LP: 8025644)