Almost forgotten, but still a fact: Aero Lloyd operated a scheduled network in the past. They served internal German routes plus international services to London and Paris. For these flights the designator YP
(= Your Partner) was used, for their charter flights AEF.
Their approach was similiar to the one adapted by GEXX now, morning and evening flights to business destinations, in between flight to holiday destinations. However, after a short period all scheduled operations were stopped with the exception of FRA
On this run one or two MD
's that had previously been with German Wings (MK1) were used, still in the comfortable 2 x 2 German Wings layout.
And I agree fully with TriStar 500 that it is (was) an excellent airline, offering good onboard service. And they keep their planes in mint condition.
I really keep my fingers crossed for them ... Good luck, Aero Lloyd!