Just a further bit of information regarding the A class on Derry & other GNR roads :
On Sunday 02/07/1961 2 x "Hills of Donegal" excursions ran Dublin - St. Johnston.
One was a 3 pce railcar - Amiens St - St J - ety to Derry & return
The second train was A19 and coaches - 0900 ex K/bridge - Amiens St - St J 1340 [ ety to Derry for servicing- rtn to St J at 1725 ]
Departure back to Dublin at 1800 [ see IRRS JUR 186, p 209 for details, plus photo of train at St. J ]
BELFAST/CAVAN/OMAGH were cleared for A class in May 1959
A47 operated a train from Bangor on 18/06/1960 - another was in Warrenpoint 16/10/60
In one of his many articles on locomotives in IRRS Journal Dan Ranaghan notes that the 1960 rail closures left 4 locos spare for reassignment - 3 C class [ 2 Kerry, plus Cavan?] & the Carrickmacross A class [JOURNAL 91]