A Ukrainian Boeing-737 crashes killing all onboard

[sasguru]

Uhm, pretty sure the 737NG has a fantastic safety record.

What do you mean "another one"?

It does indeed. Scotty is piss poor at basic statistics though.

[NickFitz]

Footage on Twitter has appeared that show the plane was on fire before it crashed:
خبرگزاری ایسنا on Twitter: "نخستین ویدئو از سقوط هواپیمای اوکراینی اطراف شهریار… "

If the video is confirmed genuine and the plane did catch fire in flight, then it’s possible it was a cargo fire rather than an aircraft fault, along the lines of ValuJet Flight 592 - Wikipedia.

Video footage shows one engine exploding in mid-air just after takeoff. It then plummeted out of control. My bet is on a re-fueling issue at Tehran.

It’s notoriously difficult to interpret video of an aircraft in flight, especially at night, so I’d be cautious about describing video as showing “an engine exploding” rather than “a fire suddenly becoming visible somewhere around what appears to be the centre of the plane”.

[sasguru]

If the video is confirmed genuine and the plane did catch fire in flight, then it’s possible it was a cargo fire rather than an aircraft fault, along the lines of ValuJet Flight 592 - Wikipedia.



It’s notoriously difficult to interpret video of an aircraft in flight, especially at night, so I’d be cautious about describing video as showing “an engine exploding” rather than “a fire suddenly becoming visible somewhere around what appears to be the centre of the plane”.

The "engine failure" hypothesis is also unlikely. Planes don't fall out of the sky due to a single engine failure - they're designed to cope with that.

[wattaj]

The "engine failure" hypothesis is also unlikely. Planes don't fall out of the sky due to a single engine failure - they're designed to cope with that.

"Engine failure" yes; catastrophic "engine failure" no.

Let's wait for the details to emerge before rushing to judgement.

[WTFH]

The "engine failure" hypothesis is also unlikely. Planes don't fall out of the sky due to a single engine failure - they're designed to cope with that.

Untrue at take off. If one engine (or one set of engines) fails at full throttle just after take off, it's very difficult to cope with. e.g. AF4590

[sasguru]

"Engine failure" yes; catastrophic "engine failure" no.

Let's wait for the details to emerge before rushing to judgement.

You mean the engine exploding in such a way that it causes a problem with hull integrity and/or controls. Possible I suppose, but rare, surely?

[sasguru]

Untrue at take off. If one engine (or one set of engines) fails at full throttle just after take off, it's very difficult to cope with. e.g. AF4590

Apparently not according to this (see last para):

"The take-off weight will have been limited to ensure it is safe to continue take-off with one engine inoperative after having accelerated to V1 with all engines operating. "

Engine failure on take-off - Wikipedia

[Unix]

Boeing's safety record is terrible, no wonder their CEO stepped down.

[sasguru]

Boeing's safety record is terrible, no wonder their CEO stepped down.

Nonsense. The MAX shouldn't have been certified, but other than that Boeing's safety record, like Airbus, is excellent.

[WTFH]

Apparently not according to this (see last para):

"The take-off weight will have been limited to ensure it is safe to continue take-off with one engine inoperative after having accelerated to V1 with all engines operating. "

Engine failure on take-off - Wikipedia

As highlighted, that is based on all engines operating normally at V1. If, at V1, one of the engines is not operating normally and the pilot is aware, then they can still stop the plane on the ground. After they rotate, then the only way to stop on the ground is via landing.