Thanks Jim,
I'll leave a link to a performance-related crash.
Mi-172 Crash
You don't need to lose an engine to have to correctly calculate the available performance for each flight, how many times do we neglect this planning?
Today we have tablet and mobile apps that quickly give us the numbers we need to know. Everything has become much easier, we just need to realize how important this is for our flight and how much it can help us make the right decisions.
fly safe