> 'Close call' without 'accident' still means there wasn't an accident. Close calls are a very important signal for how safe the system is. Good safety system

> 'Close call' without 'accident' still means there wasn't an accident. Close calls are a very important signal for how safe the system is. Good safety systems are redundant and require many failures to result in a crash. Here, we got down to the last link in the chain: weather was clear and the departing pilots could see there was an obvious problem while there was time to stop. > since the one in place is incredibly safe with many years of statistics to prove it. We've gotten to this safe system by chipping away at problems we see-- both from actual accidents and close calls. The only way we reach and keep (and perhaps surpass) this level of safety is to keep (carefully) correcting problems. (And yes, there is risk of changes making things worse. We need to do our best to avoid that and detect it quickly if it happens).