What was found
AFTER TAKE OFF NOSE GEAR DOOR AMBER LIGHT REMAINED ILLUMINATED. NOSE GEAR DOOR NOT CLOSED ECAM. HEAVY BUFFET AND VIBRATION. SPEED NEVER EXCEEDED 210 KTS. RETURN TO MKE. UPLOCK FOUND BROKEN SPRINGS IN NOSE GEAR DOOR UPLOCK ASSY, WHICH WOULD NOT ALLOW DOOR TO FULLY CLOSE. REQUIRES DOOR UPLOCK ASSY. REMOVED AND INSTALLED RT NOSE GEAR DOOR UPLOCK ASSY, REF MM 32-31-14-4. REPRESSURIZED GREEN HYDRAULIC SYSTEM. OPS AND LEAK CHECK NORMAL, REF MM 32-31-00-5 AND 32-33-00-5. OK TO CONTINUE.