Analysis of information sources in references of the Wikipedia article "List of Boeing B-17 Flying Fortress variants" in English language version.
"...a more effective solution to the B-17's lack of forward firepower. The solution was the Bendex Chin Turret, originally used on the YB-40 "gunship" project. While the project proved unsuccessful, the chin turret was found to be a major improvement to the B-17's forward firepower. It was fitted to the last eighty-six B-17Fs to come off the Douglas assembly line...
last revised April 2004
"...a more effective solution to the B-17's lack of forward firepower. The solution was the Bendex Chin Turret, originally used on the YB-40 "gunship" project. While the project proved unsuccessful, the chin turret was found to be a major improvement to the B-17's forward firepower. It was fitted to the last eighty-six B-17Fs to come off the Douglas assembly line...
