No. 540 Squadron RAF
| No. 540 Squadron RAF | |
|---|---|
| Active | 19 Oct 1942 – 30 Sep 1946 1 Dec 1947 – 31 Mar 1956 |
| Country | United Kingdom |
| Branch | Royal Air Force |
| Role | Photographic reconnaissance |
| Part of | No. 18 Group RAF, Coastal Command No. 16 Group RAF, Coastal Command No. 106 Group RAF, Coastal Command |
| Motto(s) | Latin: Sine qua non (Translation: "Indispensable") |
| Insignia | |
| Squadron Badge heraldry | A mosquito The badge indicates the squadron as the first user of the de Havilland Mosquito |
| Squadron Codes | DH (Nov 1945 – Sep 1946 and Dec 1947 – Aug 1953) |
No. 540 Squadron RAF was a photoreconnaissance squadron of the Royal Air Force from 1942 to 1956.