Train Dates for 1970.
(Note: Belfast YR = Belfast York Road; Belfast CSD = Belfast Central Services Depot; Belfast GVS = Belfast Great Victoria Street; ECS = Empty Coaching Stock; LE = Light Engine; GM = Railway company diesel locomotive; Whitehead generally means the RPSI's own Whitehead Excursion Station.)
| Date | Train/Operation | Loco | Itinerary/Route | Special Notes |
| Inver Colpa | 186 ECS: Belfast YR - Antrim - Belfast GVS 171 LE: Belfast YR - Antrim 186: Belfast GVS - Portadown - Lisburn - Antrim 171: Antrim - Ballymena - Belfast YR 186 LE: Antrim - Belfast YR 186: Belfast YR - Larne Harbour - Carrickfergus 171 LE: Belfast YR - Carrickfergus 171+186: Carrickfergus - Greenisland 171: Greenisland - Belfast YR |
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| Royal Meath | 186 LE: Belfast YR - Dundalk 186: Dundalk - Drogheda - Kingscourt - Dublin Connolly |
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| Light Engine | Dublin - Lisburn - Antrim - Belfast YR - Whitehead | |||
| Light Engine | Belfast YR - Whitehead | For preservation. | ||
| Light Engine | Carrickfergus - Whitehead | Both out of steam hauled from store for Open Day on 27 June 1970. | ||
| Open Day | Whitehead train rides | |||
| Colmcille | Belfast YR - Londonderry - Coleraine - Portrush - Belfast YR |