The exact unit using this TL-21B was 24 gruppo Squadroni ALE Orione with STANAG number 4041. 24 gruppo was part of 4 Raggruppamento ALE Altair. Now Altair is Reggimento ALE but not at the time the image was taken. The TL-21B is a modified version of the L-21B with improved cockpit for instrument flight basic training.
This photo was added on 14 May 2021, and has since been viewed 297 times.