661 Squadron
| Dates | Location | Higher Formation/Remarks |
| . | . | . |
| . | 1 Interim Squadron AAC | . |
| 1968.08 | Germany: Detmold. Formed by amalgamating 1 Flight with the Air Troops of 17/21 L, QDG and 3 RHA | . |
| . | 1969: Renamed 661 Aviation Squadron | . |
| . | . | . |
| . | 661 Aviation Squadron ACC | . |
| 1969.10 | Germany: Hobart Bks, Detmold. Formed by renaming 1 Interim Squadron | 4 Division Aviation Regiment: Sioux AH1 and Scout AH1 |
| . | 15 Jun - 15 Oct 72: Northern Ireland: Long Kesh | . |
| . | 1 Jan 73: Squadron renamed 661 Squadron AAC, 4 Division Aviation Regiment renamed 4 Regiment AAC | 4 Regiment AAC |
| . | 25 Mar - 1 Aug 74: Northern Ireland: Ballykelly | Sioux Helicopter Detachment |
| . | 1 Apr - 2 Aug 74: Northern Ireland: Omagh | Scout Helicopter Detachment |
| . | 1 Mar - 2 Jul 76: Northern Ireland: Long Kesh | . |
| . | 2 Jul - 1 Nov 76: Northern Ireland: Long Kesh | Composite Sqn with 660 Sqn |
| . | 12 Oct 77 - 12 Feb 78: Northern Ireland: Long Kesh | . |
| . | Nov 77: Squadron renamed A Squadron | . |
| . | 1 Apr 1978: Following the Wide Horizon Study, the Squadron was retitled 654 Squadron AAC | . |
| . | . | . |
| . | 661 Squadron AAC | . |
| 1978.04.01 | Germany: Tofrek Barracks East, Hildesheim. Formed by renaming 657 Sqn | 1 Regiment AAC: Gazelle AH1 and Lynx AH1 |
| . | 07 Dec 81 - 21 Apr 82: Northern Ireland: Aldergrove | . |
| . | 26 Feb - 3 Jun 84: Northern Ireland: Aldergrove | . |
| 1993.01 | Germany: Princess Royal Bks, Gutersloh: Anti-Tank Role | 1 Regiment AAC: Gazelle AH.1, Lynx AH.7 |
| . | 2005: Last Lynx Mark 7 helicopter was replaced with the Lynx Mark 9 | Lynx AH.9 |
| . | Between April 2005 and May 2009: deployed three times on Operation TELIC (Iraq) | . |
| . | Between April 2006 and April 2007: Operation OCULUS (the Balkans) | . |
| . | 2011: Lynx Mk9 were upgraded to the Lynx Mk9A | Lynx Mk9A |
| 2014 | England: Royal Naval Air Station Yeovilton | 1 Regiment AAC |
| . | 1 Regiment will merge with 9 Regiment at Dishforth, bringing the Wildcat force under a single HQ based at Yeovilton, by October 2015 | . |
| . | . | . |
| . | . | . |
Previous page: 660 Squadron
Next page: 662 Squadron