821 Naval Air Squadron

821 Naval Air Squadron was a Royal Navy Fleet Air Arm carrier based squadron formed on 3 April 1933 with the transferral and amalgamation of the Fairey III aircraft from 446 and half of 455 Flight (Fleet Spotter Reconnaissance) Flights Royal Air Force to the newly formed Fleet Air Arm of the Royal Air Force. The squadron operated during the Second World War.

821 Naval Air Squadron

821 Naval Air Squadron was a Royal Navy Fleet Air Arm carrier based squadron formed on 3 April 1933 with the transferral and amalgamation of the Fairey III aircraft from 446 and half of 455 Flight (Fleet Spotter Reconnaissance) Flights Royal Air Force to the newly formed Fleet Air Arm of the Royal Air Force. The squadron operated during the Second World War.