Warner, because of its seven-cylinder, air-cooled and radial piston engine. That's why it was the most commonly seen of the small radials for US-built pre-WWII era aircraft.
Type: Posts; User: fastaviationdata
Warner, because of its seven-cylinder, air-cooled and radial piston engine. That's why it was the most commonly seen of the small radials for US-built pre-WWII era aircraft.