Low fuel emergency in DFW

One guesstimation regarding how quickly a runway can be cleared for a
landing in the opposite direction. It's not uncommon to have three airplanes
on the departure runway - one accelerating, one taxiing into position at the
end and another (the next for take-off) taxiing into position at an
intersection. Allow 1 minute for the take-off run and another for initial
climbout. As for the other two airplanes, behind them is typically the
departure queue blocking the quickest exit, so they will need to taxi on the
runway to the next free exit before vacating the runway. That probably takes
the same 2 minutes. So 2 minutes minimum. Then consider the wake turbulence,
if it was a heavy taking off - do you really want to land into the wake?
That might cause an emergency all by itself. Just my $0.02.

Nils Rostedt writes:

One guesstimation regarding how quickly a runway can be cleared for a
landing in the opposite direction. It's not uncommon to have three airplanes
on the departure runway - one accelerating, one taxiing into position at the
end and another (the next for take-off) taxiing into position at an
intersection. Allow 1 minute for the take-off run and another for initial
climbout. As for the other two airplanes, behind them is typically the
departure queue blocking the quickest exit, so they will need to taxi on the
runway to the next free exit before vacating the runway. That probably takes
the same 2 minutes. So 2 minutes minimum. Then consider the wake turbulence,
if it was a heavy taking off - do you really want to land into the wake?

Yes, if the alternative is hitting a hillside at 200 knots.

If, if, if ... there seems to be some grasping at straws here. The reality is
that the PIC decides in an emergency, and ATC obeys.

--
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"Nils Rostedt" wrote in message
...

One guesstimation regarding how quickly a runway can be cleared for a
landing in the opposite direction. It's not uncommon to have three
airplanes on the departure runway - one accelerating, one taxiing into
position at the end and another (the next for take-off) taxiing into
position at an intersection. Allow 1 minute for the take-off run and
another for initial climbout. As for the other two airplanes, behind them
is typically the departure queue blocking the quickest exit, so they will
need to taxi on the runway to the next free exit before vacating the
runway. That probably takes the same 2 minutes. So 2 minutes minimum. Then
consider the wake turbulence, if it was a heavy taking off - do you really
want to land into the wake? That might cause an emergency all by itself.
Just my $0.02.


So there'd be no hurry then.

It isn't just the traffic ON the runway, but the traffic in
the air within many miles that has to go somewhere.



"Steven P. McNicoll" wrote in
message
nk.net...
|
| "Nils Rostedt"
wrote in message
| ...
|
| One guesstimation regarding how quickly a runway can be
cleared for a
| landing in the opposite direction. It's not uncommon to
have three
| airplanes on the departure runway - one accelerating,
one taxiing into
| position at the end and another (the next for take-off)
taxiing into
| position at an intersection. Allow 1 minute for the
take-off run and
| another for initial climbout. As for the other two
airplanes, behind them
| is typically the departure queue blocking the quickest
exit, so they will
| need to taxi on the runway to the next free exit before
vacating the
| runway. That probably takes the same 2 minutes. So 2
minutes minimum. Then
| consider the wake turbulence, if it was a heavy taking
off - do you really
| want to land into the wake? That might cause an
emergency all by itself.
| Just my $0.02.
|
|
| So there'd be no hurry then.
|
|
|

"Jim Macklin" writes:

It isn't just the traffic ON the runway, but the traffic in
the air within many miles that has to go somewhere.

It takes only a few seconds to divert it.

--
Transpose mxsmanic and gmail to reach me by e-mail.

"Jim Macklin" wrote in message
...
It isn't just the traffic ON the runway, but the traffic in
the air within many miles that has to go somewher

They don't have to go far. One minute after a 10 degree heading they would
be out of the way.

Danny Deger

I don't think you understand the complexity of the airspace
around DFW, with arrival gates, departure corridors,
multiple runways.

It is not a 1 minute or a two minute exercise to "clear the
airspace" neither does a 10° heading change create legal
separation in one minute.


"Danny Deger" wrote in message
...
|
| "Jim Macklin" wrote
in message
| ...
| It isn't just the traffic ON the runway, but the traffic
in
| the air within many miles that has to go somewher
|
| They don't have to go far. One minute after a 10 degree
heading they would
| be out of the way.
|
| Danny Deger
|
|
|

neither does a 10° heading change create legal
separation in one minute.

Legal separation is nice, but in an emergency, I'll settle for anything
that doesn't bend metal.

Jose
--
Humans are pack animals. Above all things, they have a deep need to
follow something, be it a leader, a creed, or a mob. Whosoever fully
understands this holds the world in his hands.
for Email, make the obvious change in the address.

That is not an option for all the other airplanes or ATC.



"Jose" wrote in message
...
| neither does a 10° heading change create legal
| separation in one minute.
|
| Legal separation is nice, but in an emergency, I'll settle
for anything
| that doesn't bend metal.
|
| Jose
| --
| Humans are pack animals. Above all things, they have a
deep need to
| follow something, be it a leader, a creed, or a mob.
Whosoever fully
| understands this holds the world in his hands.
| for Email, make the obvious change in the address.

"Jim Macklin" wrote in message
news

I don't think you understand the complexity of the airspace
around DFW, with arrival gates, departure corridors,
multiple runways.

It is not a 1 minute or a two minute exercise to "clear the
airspace" neither does a 10° heading change create legal
separation in one minute.


You don't understand how ATC works.