Train Dates for 1973.
(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 |
| King Fergus | Whitehead - Belfast YR - Larne Harbour - Whitehead | |||
| Massereene | Whitehead - Belfast YR - Antrim - Belfast GVS - Lisburn - Antrim - Belfast YR - Whitehead | |||
| Power To Move | Whitehead - Belfast YR - Antrim - Lisburn - Moira - Portadown - Moira & return | Filming for a BBC TV series. | ||
| Portrush Flyer | Whitehead - Belfast YR - Portrush - Belfast YR - Whitehead | |||
| Portrush Flyer | Whitehead - Belfast YR - Portrush - Belfast YR - Whitehead | |||
| Portrush Flyer | Whitehead - Belfast YR - Portrush - Belfast YR - Whitehead | Was intended to be a Colmcille to Derry with No.171, but this loco failed and No.4 was lit and ran to Portrush only. | ||
| Portrush Flyer | Whitehead - Belfast YR - Portrush - Belfast YR - Whitehead | No.4 blew tubes on the return trip. The whole train, including engine, was hauled from York Road to Whitehead by a 70 class diesel set. | ||
| Engine Transfer | Whitehead - Belfast YR - Antrim - Lisburn - Dublin Connolly | No 171 hauled 186, light steam, with coaches 88 and 861. | ||
| Three Rivers | 186: Dublin Connolly - Arklow - Ballygeary 171 LE: Dublin Connolly - Kilkenny - Ballygeary 186+171: Ballygeary - Rosslare Harbour 171: Rosslare Harbour - Waterford 186 LE: Rosslare Harbour - Waterford 186: Waterford - New Ross - Waterford |
No.171 was on the rear of the train for the short trip onto the Pier. | ||
| Three Rivers | 186: Waterford - Ballinacourty - Waterford - Kilkenny - Dublin Connolly - Belfast GVS 171: Waterford - Kilkenny- Sallins |
No.171 failed at Waterford first thing. The day was No.186's alone. No.171 was towed to Sallins by a diesel. |
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| Empty Carriages | Belfast GVS - Lisburn - Antrim - Whitehead | |||
| Engine Transfer | Whitehead | Planet No.23 arrives at Whitehead. | ||
| Engine Transfer | Sallins - Dublin Connolly - Whitehead | Coaches 1142 and 91 were added in Dublin. |