Train Dates for 1991.
(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 |
| Running-In | Whitehead - Belfast YR - Coleraine - Belfast YR - Whitehead | 7-coach train. | ||
| Running-In | Whitehead - Belfast YR - Antrim - Lisburn - Bangor - Lisburn - Antrim - Belfast YR - Whitehead | 7-coach train. | ||
| Running-In | Whitehead - Belfast YR - Antrim - Lisburn - Dundalk & return | 7-coach train. The locomotive was scheduled to run to Drogheda to turn, but arrived in Dundalk (with both big ends carrying heat!) too late to permit this. |
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| Running-In | Whitehead - Belfast YR - Whitehead (x2) | 2-coach train. | ||
| Running-In | Whitehead - Belfast YR - Antrim - Lisburn - Dundalk & return | 7-coach train. | ||
| Engine Transfer | Whitehead - Belfast YR - Antrim - Lisburn - Dublin Connolly | |||
| Test Run | LE: Dublin Connolly - Mullingar Mullingar - Dublin Connolly |
Test run to allow Irish Rail crews to familiarise themselves with locomotive. Returned from Mullingar with four RPSI coaches. | ||
| 461 Launch | ECS: Dublin Connolly - Dublin Pearse Dublin Pearse - Dún Laoghaire - Dublin Connolly |
The RPSI's first ever Presidential Special conveyed the first ever lady Irish President, Mrs Mary Robinson, from Pearse to the original Kingstown terminus. | ||
| Empty Carriages | Whitehead - Belfast YR - Antrim - Lisburn - Dublin Connolly | |||
| Decies | 461: Dublin Connolly - Gorey 176: Gorey - Rosslare - Wellingtonbridge 461 LE: Gorey - Dublin Connolly |
No.461 failed at Gorey. Due to the Barrow Bridge having been struck by a ship, tour passengers were bussed to Waterford. The RPSI set was diesel-hauled from Wellingtonbridge to Waterford via Dublin! |
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| Decies | 4 LE: Dublin Connolly - Kildare - Kilkenny - Thomastown 071: Waterford - Thomastown 4: Thomastown - Kilkenny - Kildare - Tullamore - Dublin Connolly - Belfast Central 4 ECS: Belfast Central - Belfast CSD |
No.4's axle-loading prevented her from crossing bridge 114 and coming into Waterford. | ||
| Decies | ECS: Belfast CSD - Belfast Central Belfast Central - Bangor - Lisburn - Antrim - Belfast YR - Larne Harbour - Whitehead |
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| Engine Transfer | Dublin Connolly - Lisburn - Antrim - Belfast YR - Whitehead | |||
| Engine Transfer | Whitehead - Belfast YR - Antrim - Lisburn - Dublin Connolly | |||
| Maynooth Shuttle | Dublin Connolly - Maynooth - Enfield - Maynooth - Dublin Connolly - Maynooth - Enfield - Maynooth - Dublin Connolly | |||
| Sea Breeze | Dublin Connolly - Wexford - Rosslare Harbour | At Rosslare No.4's pony truck derailed, and the train was worked back to Dublin by 141 class loco. | ||
| Engine Transfer | Rosslare Harbour - Dublin Connolly | |||
| Running-In | Whitehead - Belfast YR - Larne Harbour - Whitehead | 4-coach train. | ||
| Stock Movement | Whitehead - Belfast YR - Antrim - Lisburn - Belfast CSD & return | With coach 114 to CSD and returned with the defunct CSD turntable mounted on two RPSI bogie flats. | ||
| 07/07 | Running-In | 461 | Whitehead - Belfast YR - Coleraine - Belfast YR - Whitehead | 4-coach train. |
| Sea Breeze | Dublin Connolly - Wexford - Rosslare Harbour & return | |||
| Running-In | Whitehead - Belfast YR - Coleraine & return | 7-coach train. | ||
| Portrush Flyer | Whitehead - Belfast YR - Portrush - Coleraine - Castlerock - Coleraine - Portrush - Belfast YR - Whitehead | |||
| Portrush Flyer | Whitehead - Belfast YR - Portrush - Coleraine - Castlerock - Coleraine - Portrush - Belfast YR - Whitehead | |||
| Sea Breeze | Dublin Connolly - Wexford - Rosslare Harbour & return | |||
| Greystones Shuttle | Dublin Connolly - Greystones & return (x3) | |||
| Engine Transfer | Dublin Connolly - Lisburn - Antrim - Belfast YR - Whitehead | |||
| Atlantic Coast Express | Whitehead - Belfast YR - Londonderry & return | |||
| Engine Transfer | Whitehead - Bleach Green - Antrim - Lisburn - Dublin Connolly | Bleach Green emergency crossover used. | ||
| Public Charter | Whitehead - Belfast YR - Antrim - Lisburn | Charter for DOE NI. No.4 failed near Lisburn and the whole train was hauled by an NIR Hunslet to CSD. This was No.4's last movement until 2001. |
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| Empty Carriages | Dublin Connolly - Mullingar | |||
| Santa Special | Mullingar - Killucan & return (x3) | |||
| Santa Special | Mullingar - Killucan & return (x3) | |||
| Stock Movement | Whitehead - Magheramorne Loop & return (x2) | Turntable wagons and non-operational coaches to clear the Whitehead sidings for erection of the carriage shed. |