All Things Aviation
Re: All Things Aviation
A CAT 3 landing. You just hope that the runway appears and not the tower.
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Re: All Things Aviation
That must be very unsettling for a pilot.
Layman’s (possibly dumb) question here, what if you emerge through the fog to see runway already under you, how can you tell if there’s still enough runway left for stopping the aircraft?
Re: All Things Aviation
The ILS glidescope shouldset you down at the threshold of the runway. If you do find yourself halfway down and don't have enough runway or are unsure, you better get out of there pdq. I don't know of any crash that involved a mis-calibrated glidescope except on the film Die Hard 2Chad Sexington wrote: ↑Sun Apr 10, 2022 9:01 amThat must be very unsettling for a pilot.
Layman’s (possibly dumb) question here, what if you emerge through the fog to see runway already under you, how can you tell if there’s still enough runway left for stopping the aircraft?
Big aircraft can't stop their decent instantly, even when full power is applied, and as this aircraft broke through the crowds at 100ft I reckon only a touch and go would be possible, i.e. the plane lands but powers up and takes off again. This is fine in a light aircraft, but I imagine this is not much fun in a big jet.
@Freightdog Touch and goes in a 757 - are they a bit sporty?
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Re: All Things Aviation
Doc67
This was our circuits day on G-LSAD, January 2011. Sporty, and fun. 4 of us doing circuits for licence issue when we completed type rating course.
ps. The video isn’t of all 4 of us doing 4 circuits each….
This was our circuits day on G-LSAD, January 2011. Sporty, and fun. 4 of us doing circuits for licence issue when we completed type rating course.
ps. The video isn’t of all 4 of us doing 4 circuits each….
Last edited by Freightdog on Sun Apr 10, 2022 11:51 am, edited 1 time in total.
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All Things Aviation
Chad. Not a dumb question at all.Chad Sexington wrote: ↑Sun Apr 10, 2022 9:01 am That must be very unsettling for a pilot.
Layman’s (possibly dumb) question here, what if you emerge through the fog to see runway already under you, how can you tell if there’s still enough runway left for stopping the aircraft?
We have 3 types of precision approach
ILS Cat 1, 2, and oddly 3
Cat 3 has 2 types- 3A and 3B
ILS Cat 1 is a decision height at around 200 feet above the runway elevation, which equates to just over 0.5 miles from the runway. But it’s based on barometric altimeter, and we usually reference to QNH which is sea level pressure, which makes it a decision altitude.
Cat 2 is at based on Radio Altimeter. Decision at 100’. And that’s measured on a surface that is at the same level as the runway. A decision at 100’ height above the runway
Cat3 A is 50’.
Cat3 B is on the runway.
Sorry Doc. The actual glideslope leads to a touchdown which is some 300m/1000’ from the threshold. Roughly the same as the PAPIs
A couple of pics coming up if you’ll bear with me…
This is Lucknow, in India. On a good day.
This is how runway approach lights appear, depending on airport facilities.
So to answer Chads question. In the low visibility approach Cat 3, we actually become visual with the runway under us. In the B737 and 757, and most aircraft for many decades, the landing is automatic. The autopilots land the aircraft, to put it simply. In fact, if the runway isn’t under us, that’s the problem.
Re: All Things Aviation
Two Super Stallion helicopters refueling from a KC-130 Hercules while transporting Humvees
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Re: All Things Aviation
One more video for fans of the wooden wonder
Some interesting postwar history, and a poignant tale towards the end.
Some interesting postwar history, and a poignant tale towards the end.
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