No. 89 Squadron RAF
Active	1 Sep 1917 – 4 Jul 1918 25 Sep 1941 – 1 May 1946 15 Sep 1955 – 30 Nov 1958
Country	United Kingdom
Branch	Royal Air Force
Mottos	Latin:Dei Auxilio Telis Meis ("By the help of God with my own weapons")[1]
Insignia
Squadron Badge heraldry	Awyvern pierced by a flash of lightning[2]
Squadron Roundel
Squadron Codes	WP (May 1942 – Jun 1942)[3]

No. 89 Squadron was aRoyal Air Force squadron, mainly active in the night fighter role during its existence.

No. 89 squadron was formed on 1 September 1917 as a training unit atNetheravon. The squadron was not used for operations and remained a training unit until it was disbanded on 4 July 1918.

The squadron was formed again on 25 September 1941 atRAF Colerne, equipped withBristol Beaufighter night fighters. The squadron moved out to theMiddle East to defend the Nile delta and theSuez Canal. On 3 March 1942 the squadron scored its first victory when it shot down a German LuftwaffeHeinkel He 111. The squadron was active in the Mediterranean area, sending aircraft toMalta and Algiers, and in 1943 sought targets overCrete and laterSicily. With the withdrawal further north of the German night fighter units, the squadron moved first toCeylon, then in the summer of 1944 toBurma on intruder missions. The aircraft withdrew from operations to convert to thede Havilland Mosquito. Apart from leaflet dropping from Singapore, there was little for the squadron to do and it was disbanded on 1 May 1946.

With the expansion ofRAF Fighter Command in the mid-1950s, the squadron was re-formed on 15 September 1955 atRAF Stradishall and equipped with thede Havilland Venom NF.3. Two years later, these were replaced with theGloster Javelin. It only flew for a year as an all-weather fighter squadron and was disbanded on 30 November 1957, when it was re-numbered as85 Squadron.

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