Categories Articles Some of the US Air Force’s biggest planes are being grounded over cracks in a part that holds their propellers Post author By crystalg Post date October 6, 2022 Business Insider Business Insider Tags Being, Biggest, cracks, forces, grounded, Holds, Over, Part, Plane's, propellers, Some, Their ← 2 Safe Tech Stocks to Buy and Hold Right Now → Tastier beer? Scientists alter gene responsible for improving alcohol’s flavor