Formed at RAF Andover on 5 Mar 1945 as an RCAF unit, it was to be the last AOP Squadron formed in WWII. 
In its preparation to move to Soest, 3 REGT divested itself of 666 Squadron to become an independent unit in 1976. It retired its 6 Sioux on 22 Feb 1978. Moved to Netheravon 1986 and disbanded there on 1 Apr 2009.
Based at RAF Topcliffe from early 1970s in support of 24 Brigade. Flew 6 Scout AH1 and 6 Sioux. Shared hanger 5 with 15 flight AAC who had 4 Beaver. Known as the Scottish Squadron from its late RAF days. Was part of 3 regiment AAC based at Netheravon. Believe they moved to Dishforth shortly after 24 brigade moved into RAF Topcliffe.
Flew Sioux AH1 at least from March 1975.
666 Squadron was deactivated on 01Nov78. It was reformed as 666(TA)Squadron on 26Apr86. It flew Scout AH1 between Apr86-Mar94 and Gazelle AH1 from 1994-2009.
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Models 666 Squadron (Volunteers) List of helicopters |
| C/N | Version | Built | In this Org | In other Org | |||
|---|---|---|---|---|---|---|---|
| f.9528 | ah.1 | 1964 | XR628 : operated by 666 Sqn AAC based at Topcliffe barracks circa 1974 -1976;
I + | ||||
| f.9529 | ah.1 | 1964 | XR629 B : 666 Sq /B by Jun 1972, fitted with SS11 missile. | ||||
| f.9530 | ah.1 | 1964 | XR630 : 666 Sq / F by Jun 1972 | ||||
| 1540 | ab47g-3b | 1964 | XT131 : Took part in 666 Sq disbandment flypast on 22 Feb 1978, subsequently flew + | - G-CICN | |||
| 1556 w/o 1991 | ab47g-3b | 1964 | XT144 : Took part in 666 Sq disbandment flypast on 22 Feb 1978, subsequently flew + | - OE-CXP - HB-XOJ - EC-DUV | |||
| wa333 w/o 1973 | Sioux | 1965 | XT174 : AAC with 666 Sqn displayed at RAF Topcliffe Open Day | ||||
| wa440 | Sioux | 1967 | XT551 : Took part in 666 Sq disbandment flypast on 22 Feb 1978, subsequently flew + | - ZS-HJT | |||
| wa442 w/o 1989 | Sioux | 1967 | XT553 : Took part in 666 Sq disbandment flypast on 22 Feb 1978, subsequently flew + | - HB-XLX | |||
| wa447 Scrapped | Sioux | 1967 | XT558 : Took part in 666 Sq disbandment flypast on 22 Feb 1978, subsequently flew + | ||||
| f.9627 w/o 1970 | ah.1 | 1965 | XT621 : 666 Sq; 664 Sq; 666 Sq; 656 Sq; 655 Sq | ||||
| f.9632 | ah.1 | 1966 | XT626 Q : pictured (pic1) as /Q 666 Squadron Army Air Corps badge, in 50th anniversa+ | - G-CIBW | |||
| f.9701 | ah.1 | 1967 | XV126 X : at Yeovilton Air Show as 666 Sq / X : pictured (pic1) at RNAS Postland, coded X with 666 Squadron AAC | - G-SCTA | |||
| f.9715 | ah.1 | 1968 | XV140 K : 666 Sq/K by Jul 1986 |  XV140 - G-KAXL - 9L- | |||
| wa713 | Sioux | 1969 | XW193 : Took part in 666 Sq disbandment flypast on 22 Feb 1978, subsequently flew + | XW193 G-BHKW - SX-HCC | |||
| f.9737 w/o 2002 | ah.1 | 1969 | XW282 : del 1969; 666 Sq /W by Jul 1984 | - ZK-HUC | |||
| 1209 | ah.1 | XW904 H : noted at Netheravon | |||||
| 1217 | ah.1 | XW908 A : noted at Netheravon A : 666Sqn./A | |||||
| 1273 | ah.1 | 1974 | XX383 D : noted at Netheravon D : stop at Northolt D : 666 Sq / D visited RAF Shawbury on 7 Jul 1999 D : In 2000 /D 666Sqn. | XX383 - ZU-RMU | |||
| 1321 | ah.1 | 1975 | XX399 B : noted visiting Gütersloh B : noted visiting Gütersloh | XX399 XX399 | |||
| 1406 | ah.1 | 1975 | XX438 F : noted at Exeter F : noted at Blackpool F : noted at Ashton Court F : visiting Koksijde | ||||
| 1221 | ah.1 | 1976 | XX442 E : noted at Netheravon E : noted visiting RAF Shawbury | ||||
| 1506 | ah.1 | 1978 | XZ294 X : noted at DLO Endsleigh, nr Bath. X : visiting Koksijde | - G-CMLO - ZU-REX | |||
| 1599 | ah.1 | 1976 | XZ316 B : noted at Netheravon | - XZ316 | |||
| 1631 | ah.1 | XZ323 : 666Sqn./H H : noted visiting RNAS Yeovilton | |||||
| 1652 | ah.1 | 1977 | XZ331 D : noted visiting RAF Shawbury D : AAC AH.1; 08jun08 as /D 666 Sqn at Sywell National Helicopter Championship+ | ||||
| 1815 | ah.1 | ZA773 F : noted at Netheravon F : stop at Northolt : 666Sqn./F | |||||
