The NCL unit does tend to work more than 4 times a week, it usually does 2x TFS 2x LPA (altho only 1 a wk at the mo) 1xACE and 2xKRK (sometimes downgraded to 737 depending on loads)
I have noticed in the last week though we have had AA, AC and AE. I was told AA has gone for mx and wont be back for a few weeks, there was a bit change over of aircraft in LPA other night with BFS and NCL having a swap round. AC back from MX now so think its taking the place of AA.