| 1 | A | B | C | D |
| --- | --- | --- | --- | --- |
| 2 | UTA 70 Class - Status |  |  |  |
| 3 | Number | Power Car Name | Status | Notes |
| 4 | Power cars | Power cars | Power cars | Power cars |
| 5 | 71 | River Bush | Scrapped | Engines, generators and traction motors refurbished for use in 450 Class |
| 6 | 72 | River Foyle | Scrapped | Engines, generators and traction motors refurbished for use in 450 Class |
| 7 | 73 | River Roe | Scrapped | Engines, generators and traction motors refurbished for use in 450 Class |
| 8 | 74 | River Lagan | Scrapped | Engines, generators and traction motors refurbished for use in 450 Class |
| 9 | 75 | River Main | Scrapped | Engines, generators and traction motors refurbished for use in 450 Class |
| 10 | 76 | River Inver | Scrapped | Engines, generators and traction motors refurbished for use in 450 Class |
| 11 | 77 | River Braid | Scrapped | Engines, generators and traction motors refurbished for use in 450 Class |
| 12 | 78 | River Bann | Scrapped | Engines, generators and traction motors refurbished for use in 450 Class |
| 13 | Buffet cars | Buffet cars | Buffet cars | Buffet cars |
| 14 | 548 | - | Scrapped | Ex MPD buffet |
| 15 | 550 | - | Preserved by RPSI | Ex MPD buffet |
| 16 | 554 | - | Scrapped | Ex AEC buffet |
| 17 | Trailer cars | Trailer cars | Trailer cars | Trailer cars |
| 18 | 701 | - | Scrapped | Brake First Rebuilt as DBSO 1977 |
| 19 | 702 | - | Scrapped | Brake Composite |
| 20 | 703 | - | Scrapped | Brake Standard Rebuilt as DBSO 1977 |
| 21 | 711 | - | Scrapped | Driving Brake Composite |
| 22 | 712 | - | Scrapped | Driving Brake Composite |
| 23 | 713 | - | Scrapped | Driving Brake Standard Preserved by DCDR Body destroyed by arson 2002 Underframe in use as a flat wagon |
| 24 | 714 | - | Scrapped | Driving Brake Standard |
| 25 | 721 | - | Scrapped | Trailer Standard |
| 26 | 722 | - | Scrapped | Trailer Standard |
| 27 | 723 | - | Scrapped | Trailer Standard |
| 28 | 724 | - | Scrapped | Trailer Standard |
| 29 | 725 | - | Scrapped | Trailer Standard |
| 30 | 726 | - | Scrapped | Trailer Standard |
| 31 | 727 | - | Scrapped | Trailer Standard |
| 32 | 728 | - | Preserved by DCDR | Trailer Standard Ex MPD driving trailer |

Question: Which UTA 70 Class trailer cars were rebuilt as DBSO, and when were they rebuilt, respectively?
Answer: In 1977, 701 and 703 were rebuilt as Driving Brake Standard.