According to the Herald, there was an LH 321 that returned with a gear problem 5h ahead of this incident, and today I saw an A320 land at FRA with the firetrucks rolling beind, with the gear doors down. If I remember correctly, and it is some 15 years ago Iflew that beast, that would indcate either a manual extension, or some hydraulics fault...
Are the 320s getting old?