666 Squadron
| Dates | Location | Higher Formation/Remarks |
| . | . | . |
| . | 666 Aviation Squadron | . |
| 1969.08.19 | England: Formed at Coypool, Plymouth | 3 Division Aviation |
| . | 18 Aug - 1 Oct 69: Northern Ireland: Ballykelly/Omagh | 8 Flight |
| . | 1 Oct 69 - 24 Jan 70: Northern Ireland: Ballykelly/Omagh | . |
| . | 6 Oct - 15 Dec 71: Northern Ireland: Aldergrove | . |
| . | 1 Jan 73: Regiment renamed 3 Regiment AAC and squadron renamed 666 Squadron AAC | 3 Regiment AAC |
| 1973.01.01 | England: RAF Topcliffe | Sp to 24 Airportable Bde: |
| . | 13 Apr - 15 Aug 73: Northern Ireland: Aldergrove | . |
| . | 15 Dec 74 - 15 Apr 75: Northern Ireland: Aldergrove/Sydenham | . |
| . | 1 Apr 1978: Following the Wide Horizon Study, the Squadron was retitled 655 Squadron AAC | . |
| . | . | . |
| . | 666 Squadron AAC (V) | . |
| c1979/80 | England: Formed at Airfield Camp, Netheravon | 7th Regiment AAC (V): Gazelle AH.1 |
| . | 1 Apr 2009: Disbanded at Netheravon, Wiltshire | . |
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