Lighty89, pprune.org is a US based site and hence US laws are working here.
LNIDA, LN-NON is the oldest 737-800, but DY still has 9 737-300, all older than LN-NON, and the almost 25 year old wart hog LN-KKW is the oldest of the DY fleet. To link this to Jet2, LN-KKW is younger than all Jet2 G-CEL_ registered 737-300. All 737-300 in the DY fleet will be gone by the end of 2015 and in 2015 they only will have 5 737-300 in their fleet (all 4 leased 737-300 and 3 leased old 737-800 will be returned to lessor at the end of this year, among the three 737-800 is LN-NON).