page_title: Grumman AF Guardian
section_title: Variants
hierarchical_section_title: Grumman AF Guardian / Variants
caption_attribution_description: A Grumman AF-2S Guardian (BuNo 124780) photographed from below with an opened weapons bay.
context_page_description: The Grumman AF Guardian was the first purpose-built anti-submarine warfare carrier-based aircraft to enter service with the United States Navy. It consisted of two airframe variants, one for detection gear, the other for weapons. The Guardian remained in service until August 1955, when it was replaced by the twin-engined Grumman S-2 Tracker. The Guardian was the largest single-engine piston-powered carrier aircraft ever to see service.
context_section_description: XTB3F-1
  Prototypes of two-seat torpedo bomber powered by one 2,300 hp R-2800-46 engine and a Westinghouse turbojet; three built.
  XTB3F-1S & -2S
  Two modified XTB3F-1 prototypes with turbojet removed and ventral radome, later redesignated as XAF-1.
  AF-2S
  Production variant with 2,400 hp R-2800-48 engine, 193 built.
  AF-2W
  Hunter variant with search radar in a ventral radome, 153 built.
  AF-3S
  Hunter/Killer variant similar to AF-2S with retractable MAD boom, 40 built.
  Grumman Model G-90
  Proposed combined AF-2S/-2W version, cancelled.
caption: The underside of an AF-2S showing its opened weapons bay
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