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521st Fighter-Bomber Squadron
Active	1943-1944
Country	United States
Allegiance	United States Air Force
Branch	Fighter-Bomber
Size	Squadron
Aircraft flown
Bomber	A-24 Banshee P-39 Airacobra A-36 Apache B-25 Mitchell

The 521st Fighter-Bomber Squadron is an inactive United States Air Force unit. Its last was assigned to the 415th Bombardment Group, stationed at Dalhart Army Airfield, Texas. It was inactivated on 5 Apr 1944.

Established in early 1943 as an A-24 dive bomber squadron. Assigned to the Army Air Forces School of Applied Tactics, Air University in Florida as a training unit to develop combat tactics to be used by overseas combat units. Also equipped with P-39 fighters and A-36 dive bombers with the phaseout of the A-24.

When AAFSAT closed, was re-assigned as a B-25 medium training squadron and supported Army maneuvers. Inactivated in April 1944 with re-organization of training command designations.

• Constituted 667th Bombardment Squadron (Dive) on 12 Feb 1943.

Activated on 15 Feb 1943.

Re-designated 521st Fighter-Bomber Squadron 10 Aug 1943.

Disbanded on 5 Apr 1944.

• 415th Bombardment Group, 15 Feb 1943 – 5 Apr 1944.

• Alachua Army Airfield, Florida, 15 Feb 1943
• Orlando Army Airbase, Florida, 2 Mar 1944;
• Dalhart Army Airfield, Texas, 19 Mar-5 Apr 1944

• A-24 Banshee (1943)
• P-39 Airacobra (1943)
• A-36 Apache (1943)
• B-25 Mitchell (1943-1944)

 This article incorporates public domain material from the Air Force Historical Research Agency

• Maurer, Maurer, ed. (1982) [1969]. Combat Squadrons of the Air Force, World War II (PDF) (reprint ed.). Washington, DC: Office of Air Force History. ISBN 0-405-12194-6. LCCN 70605402. OCLC 72556.