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#1
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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. |
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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. -- Transpose mxsmanic and gmail to reach me by e-mail. |
#3
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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. |
#4
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![]() "Rich Ahrens" wrote in message ... Steven P. McNicoll wrote: The tapes were part of the report. ATC was wrong, no question about it. And for everyone speculating, here's the news report in question: http://tinyurl.com/24jjaz (There's a brief ad in front of the report.) The video includes audio clips of the radio traffic. Interesting coincidence that the station's call sign is WFAA. Only egregious error I see in the reporting is the graphic at the beginning that contains an arrow from Dallas to Tulsa, rather than the reverse. Thanks for the link. The supervisor should be fired in my opinion. Danny Deger |
#5
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Jim Macklin wrote:
It takes less time to fit the Tulsa to DFW flight into the flow of traffic than it does to turn 12-30 airplanes out of the way to turn the airport around. DFW, unlike many smaller airports never has a slack time, there are always long sequenced flights. Departing Tulsa, by jet, to DFW is not a long flight...why did they have a "fuel emergency," did they depart without fuel, did they have a leak? If the flight had insisted on landing 17, then it could easily have taken 30 minutes to get them a clear shot at the runway. They do this all of the time when a thunderstorm passes over the airport. There are procedures to interrupt traffic flow for periods of time such as this. If the flight had insisted on using 17C, the only time it takes is for the airplane to get to the runway. There is no extra 30 minutes. Where do you get that from? Matt |
#6
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"Jim Macklin" wrote in news:
: It takes less time to fit the Tulsa to DFW flight into the flow of traffic than it does to turn 12-30 airplanes out of the way to turn the airport around. DFW, unlike many You're missing the point. This is not a wind change. No one is suggesting turning the other planes around. The appropriate action would be to STOP the flow of traffic until the aircraft with the emergency was safely on the ground. Presumably, depending on separation requirements, they may still be able to continue releasing traffic as long as practical until the emergency aircraft is within some range. And yes, as a result, some delays might be caused in the DFW schedule that day. But guess what? Stuff like that happens... What do they do when there are hurricane-force winds or severe thunderstorms? They deal with the problem, some planes get delayed, and everybody ultimately gets safely to their destination. Same happened here, but had the fuel emergency been more severe the delays caused by a crashed airliner trying to circle to land would have been much more significant... BTW, I have NEVER seen an accurate report on TV or in a newspaper of any airline accident or incident. NEVER! I agree with you 100% here. In fact, I would go as far as to say that most news stories contain significant innacuracies or ommissions in order to sensationalize and emotionalize the reader/viewer/listener. |
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