All this has happened before
Lockheed L188 Electra - a turbo-prop plane from the 1960s. Three crashed before a major design flaw was found - at the right speed the engines made the wings vibrate at harmonic frequencies and fall off. The problem was fixed but the public wouldn't fly on it so it was dropped for commercial flights (also faster jet planes were being built).
The US military took it on and it's had a long service as the P3 Orion.
Biting the hand that feeds IT
