One of the strangest flight characteristics to the uninitiated non-pilot types, or even fixed wing private pilots, is that jet aircraft have aerodynamic qualities in the upper flight level that are a design limitation: They can both overspeed and fall out of the sky, at pretty much the same speed.
Coffin corner is a great concept to explore since it is both the yin and yang of flight. Or put another way, it is a strange intersection of where too slow meets too fast. The most noteable accident that was a stall that started near coffin corner was Air France 447, which is a good example because after suffering the effects of it, the crew wasn’t able to diagnose that a stall had even happened. Continue reading No Coffin in My Corner – Airplane Talk Demystified
For those pilots out there this post will cause you to wonder “why is he writing that?” followed by: “I know about that.”
I know you do – this isn’t for you. It’s for everyone else. With the high profile accident at Bedford, MA (KBED) this past weekend with a Gulfstream G-IV N121JM running off the departure end of its runway, it at least warranted a post. While the cause of the accident is yet to be determined, a lot of our non-flying followers and members queried us about what happened. While we can’t answer, we thought it at least appropriate to have a balanced field length or BFL explanation since when everything works as advertised, balanced field length is what makes every departure, or aborted take off go smoothly.
The good news is that BFL is all about safety. And while a non-pilot will never have to compute it, knowing what it is will at least make you feel better about those hot and heavy take offs on days when you think that the airplane is working extra hard. Continue reading BFL and why it matters