earning their pay

[Sean88gt]

I would've shit my pants at the 10:20 mark...

I bet it felt like space travel for about 5-10 seconds in there.

[Ratt]

http://www.b737.org.uk/vspeeds.htm#Take-Off_Speeds_


Those charts are in KIAS. A Knot (nautical mile per hour)is 1.15 or .15% greater of MPH. Most all aircraft use KIAS as a standard.





Errrrr, GS is king in landing and take off. Most transport category aircraft have around a 10knot max limit on tail wind for take off and landing. We can not exceed the max demonstrated crosswind limit or tailwind limit. Ground speed is the reason we takeoff and land INTO the wind, in order to slow our groundspeed down. Slower = safer, more control, less runway needed.


Example, the 777 has a GS indicator on the #1PFD. I have seen 100mph gs on the PFD and 150KIAS on the AS indicator. That is a 50 knot headwind. At AA we suspend all ops at a max of 50 knots wind period.

Man, I seriously got my information from the wrong person...

[orphan Shelby]

Lotta puke bags getting filled in there. Thats gotta feel pretty crazy in there

[likeitfast55]

In the video, one of the planes got both rear wheels down, said "NOPE", and took off again. What factor(s) are involved to make a pilot make that decision? How much of a window do you really have to make that call?

In the 80' and most transport aircraft, we have auto brakes. Logic tree will trigger them, WOW(weight on wheels), Thrust lever idle, Radar altimeter below 7'. Then we have 3 settings, low,medium, max. I have landed in Monterrey Mex. ... as I was rolling out, still above 100kias, I saw people on the runway...Call "go around" go to TOGA power, depress the GA buttons......we are gone....Power above idle....disengages brakes and ground spoilers, just for this reason.

So the window for GA is huge, I would say it depends on runway remaining. Also not to get too technical, all runways are legal for SE GA(single engine go around) These runways have to meet criteria for runway limited landing weight. Once the jet meets this criteria, even single engine we can go around.
All 121 aircraft are certified for this, guaranteed performance.

[helosailor]

Yeah, fuck BHX. I'd rather land at MAN, LGW, or LHR and drive to Birmingham. Or just not go to Birmingham at all.

[Tyrone Biggums]

In the 80' and most transport aircraft, we have auto brakes. Logic tree will trigger them, WOW(weight on wheels), Thrust lever idle, Radar altimeter below 7'. Then we have 3 settings, low,medium, max. I have landed in Monterrey Mex. ... as I was rolling out, still above 100kias, I saw people on the runway...Call "go around" go to TOGA power, depress the GA buttons......we are gone....Power above idle....disengages brakes and ground spoilers, just for this reason.

So the window for GA is huge, I would say it depends on runway remaining. Also not to get too technical, all runways are legal for SE GA(single engine go around) These runways have to meet criteria for runway limited landing weight. Once the jet meets this criteria, even single engine we can go around.
All 121 aircraft are certified for this, guaranteed performance.

That's awesome input. Can you now ELI5? (Explain like I'm five.)

[likeitfast55]

That's awesome input. Can you now ELI5? (Explain like I'm five.)

Do you have a few years........

[68RR]

do you have a few years........

lol!!!!

[SS Junk]

Sorry, I wasn't quite clear. Ground speed makes no difference, it's all about airspeed and how quickly the air is moving over the wings.

Which is why I am saying they looked to be going painfully slow when landing.

[Sleeper]

Its a big object

[orphan Shelby]

Who is controlling steering when nose comes down (direction of ft wheels)? Is there a bunch of negative caster to help center plane up on landing? Inquiring minds want to know.

[likeitfast55]

Who is controlling steering when nose comes down (direction of ft wheels)? Is there a bunch of negative caster to help center plane up on landing? Inquiring minds want to know.

Steering is disabled while in the air, for obvious reasons. On the Capt(left) side there is a "tiller" for steering. Once the nose gear squat switch (AC on the ground)is depressed, the steering becomes active. Until then it "free casters" There are steering centering devices to not allow the the nose gear to wander. Most pilots do not jump on the tiller immediately after touch-down. The rudder is much more effective in controlling the direction of the 100,000 lb aircraft than a few pieces of small rubber.

So to answer your question......no one. It free casters until the tiller is depressed and active. That comes at different speeds from different pilots(technique), but usually somewhere around the 100kias mark.