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Air India Express 737 Hits ILS, Damages Wall on Departure, Flies for 4 Hours

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Re: Air India Express 737 Hits ILS, Damages Wall on Departure, Flies for 4 Hours

#61

Post by bcOpus »

Scoundreller wrote: post #57
ehnto wrote: post #37

Earlier quoted context omitted.

Pilots would have to blow 0.0 but that doesn't mean zero evidence of alcohol. In 4 hours you can metabolise around 4 standard drinks out of your bloodstream. It's not like drugs where any trace is bad because it's illegal. That said, I'm not sure I am on board with the explanation. It could just be that with everything going on in a cockpit it wasn't noticed.

Does reduced air pressure speed up the removal of alcohol via breathing? If a fever can, wouldn’t alcohol do the same?

A fever is, at it’s core, an increase in metabolic rate. Your hypothalamus is telling your body that it’s temperature set point is higher than usual, and it takes energy to raise your temperature. I don’t see how a difference in air pressure would have a similar effect.

Re: Air India Express 737 Hits ILS, Damages Wall on Departure, Flies for 4 Hours

#62

Post by Johnny555 »

sandworm101 wrote: post #59
Johnny555 wrote: post #49

Earlier quoted context omitted.

I'd rather not trust my life to "probably". If there was some damage to the hull or a cargo door that could lead to failure, it's under more stress and is more of a hazard as the altitude increases.

Less stress imho. At altitude the forces on wings/structure are far less than during takeoff.

The takeoff has already happened, and a landing (of some sort) will have to happen (which also means flying near ground level).

The thing that doesn't need to happen is flying at full flight altitude when the pressure differential between the inside and outside is greatest.

Re: Air India Express 737 Hits ILS, Damages Wall on Departure, Flies for 4 Hours

#64

Post by darren_ »

basicplus2 wrote: post #50

Lets hope they scrap that aircraft.. i could not find a reference but i remember an incident where an aircraft only scraped its backend on take off and repairs were made, but years later the aircraft was lost with everyone on board after cracks propagated up and around and the aircraft lost its whole tale section

https://en.wikipedia.org/wiki/China_Airlines_Flight_611

22 years later!

Re: Air India Express 737 Hits ILS, Damages Wall on Departure, Flies for 4 Hours

#65

Post by [deleted] »

lavrov wrote: post #33
captain_perl wrote: post #31

Earlier quoted context omitted.

After V1, the accelerate-stop distance, the pilot is committed to continue flying. The cargo area of most airliners is not pressurized, so the gash is not an immediate problem. In a case like this, the pilots would want to climb to several thousand feet and evaluate the situation before landing. Looks like the pilot did a great job once it was realized the airplane was damaged of remaining calm and flying the airplan…

Not a pilot, and not trying to be an armchair pilot, but why would he have ascended all the way to 36000 feet? Isn't there a real risk of depressurization with hull damage?

[deleted]

Re: Air India Express 737 Hits ILS, Damages Wall on Departure, Flies for 4 Hours

#66

Post by nmstoker »

Question for professional pilots here: does this feel like normal behaviour for a pilot?

From my limited experience of pilots, this seems entirely unlike the kind of behaviour you'd expect - they're usually conservative when it comes to safety or is that just the projected image to reassure the public?!

Re: Air India Express 737 Hits ILS, Damages Wall on Departure, Flies for 4 Hours

#67

Post by raverbashing »

nmstoker wrote: post #66

Question for professional pilots here: does this feel like normal behaviour for a pilot? From my limited experience of pilots, this seems entirely unlike the kind of behaviour you'd expect - they're usually conservative when it comes to safety or is that just the projected image to reassure the public?!

No, it isn't normal behavior. And it is not unknown that some airlines are more lax than others.

Re: Air India Express 737 Hits ILS, Damages Wall on Departure, Flies for 4 Hours

#68

Post by mmcconnell1618 »

14 wrote: post #25

I have been trying to go over how this could happen. The damage to the wall seems so severe that I would image even over the sound of the engine the pilot would hear and notice that they had hit a wall. Flying the plane at this point would be risking their life. The first thing that came to my mind was the only reason a pilot would risk his life is if his life was already at risk and if he had been drinking when he h…

Over at http://pprune.org the suggestion is that the pilot's seat was not locked into position correctly and slid back during takeoff. This caused the pilot to pull back on the stick too early and his instinct was the push forward to keep the plane on the correct trajectory. He likely over-corrected and ended up flying 6ft off the ground at the end of the runway where the landing gear caught an antenna and the chainlink fence on top of the brick wall.

It's all speculation at this point.

Re: Air India Express 737 Hits ILS, Damages Wall on Departure, Flies for 4 Hours

#69

Post by [deleted] »

nmstoker wrote: post #66

Question for professional pilots here: does this feel like normal behaviour for a pilot? From my limited experience of pilots, this seems entirely unlike the kind of behaviour you'd expect - they're usually conservative when it comes to safety or is that just the projected image to reassure the public?!

[deleted]

Re: Air India Express 737 Hits ILS, Damages Wall on Departure, Flies for 4 Hours

#70

Post by mediawatcher234 »

Scoundreller wrote: post #57
ehnto wrote: post #37

Earlier quoted context omitted.

Pilots would have to blow 0.0 but that doesn't mean zero evidence of alcohol. In 4 hours you can metabolise around 4 standard drinks out of your bloodstream. It's not like drugs where any trace is bad because it's illegal. That said, I'm not sure I am on board with the explanation. It could just be that with everything going on in a cockpit it wasn't noticed.

Does reduced air pressure speed up the removal of alcohol via breathing? If a fever can, wouldn’t alcohol do the same?

other way around - reduced air pressure is reduced oxygen, which is lower metabolism. Higher metabolism causes EtOH degradation to go more quickly. Fever is higher metabolism.
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