Each piece of glass installed in the nose had to be pulled out and replaced with new distortion free panes: after that the pressurization had to be rechecked: 75 B-29s in total needed new glass.
Each piece of glass installed in the nose had to be pulled out and replaced with new distortion free panes. After that the pressurization had to be rechecked: 75 B-29s in total needed new glass.