Dcboy From United States of America, joined Aug 2007, 16 posts, RR: 0 Posted (4 years 7 months 1 week 4 days 17 hours ago) and read 2596 times:
Will the 300 yd runway extension of runway 1 at DCA effect the location of the start of the takeoff roll or the touchdown point of planes landing and taking off? Or is the extra space only going to be used for emergencies? I assume the extension will be made at the south end of the runway since there is no room to extend at the north end of the airpot.
Dcboy From United States of America, joined Aug 2007, 16 posts, RR: 0 Reply 1, posted (4 years 7 months 1 week 4 days 14 hours ago) and read 2487 times:
N62NA From United States of America, joined Aug 2003, 3683 posts, RR: 4 Reply 2, posted (4 years 7 months 1 week 4 days 14 hours ago) and read 2483 times:
That's interesting news, I had no idea they were extending the runway at DCA.
Dcboy From United States of America, joined Aug 2007, 16 posts, RR: 0 Reply 3, posted (4 years 7 months 1 week 4 days 14 hours ago) and read 2466 times:
Yep...they are extending it for the new FAA rules for emergency overrun....I just wonder if airplanes will use the new extension or just use it for emergencies and still take off from the regular touchdown/takeoff point they use now.
Jetmatt777 From United States of America, joined Jun 2005, 2663 posts, RR: 36 Reply 4, posted (4 years 7 months 1 week 4 days 14 hours ago) and read 2458 times:
Well, 900 feet won't make a very considerable difference, but your question is will they make the threshold 900 feet down (to the edge of the new pavement) or make a displaced threshold, or am I missing something?
DiscoverCSG From United States of America, joined Jan 2007, 783 posts, RR: 0 Reply 5, posted (4 years 7 months 1 week 4 days 13 hours ago) and read 2442 times:
Quoting Jetmatt777 (Reply 4): 900 feet won't make a very considerable difference
Not huge, but real. It might mean the difference between weight restrictions and not, for example.
Dcboy From United States of America, joined Aug 2007, 16 posts, RR: 0 Reply 6, posted (4 years 7 months 1 week 4 days 13 hours ago) and read 2403 times:
The extension will be 300 yards...will the thresh hold be moved or will the planes still take off from the same starting point as they do now, and land over the same part of the runway?
Jetmatt777 From United States of America, joined Jun 2005, 2663 posts, RR: 36 Reply 7, posted (4 years 7 months 1 week 4 days 13 hours ago) and read 2393 times:
Quoting Dcboy (Reply 6): The extension will be 300 yards
300 yards = 900 feet
1 yard = 3 feet
Quoting DiscoverCSG (Reply 5): Not huge, but real. It might mean the difference between weight restrictions and not, for example.
In the case of DCA, it looks like any extra room will help.
Quoting Dcboy (Reply 6): will the thresh hold be moved or will the planes still take off from the same starting point as they do now, and land over the same part of the runway?
That's something that I do not know. But, the planes will probably use that extra 900 feet, and go ahead and takeoff from it. Unless this is a runoff zone (the large surface that extends past the runway that is usually black with yellow wide arrows), which I don't think will be, like I said above, in DCA's case, any extra room is good.
IADCA From United Kingdom, joined Feb 2007, 972 posts, RR: 7 Reply 8, posted (4 years 7 months 1 week 4 days 12 hours ago) and read 2355 times:
Quoting Dcboy (Reply 6): The extension will be 300 yards...will the thresh hold be moved or will the planes still take off from the same starting point as they do now, and land over the same part of the runway?
First, it's 300 FEET, not 300 yards. Second, it's moving the runway, not extending it. As far as I understand, the reason is that the threshold on the north end of the runway is within 1000 feet of Gravelly, and as per the new FAA rule, the runway needs to end more than 1,000 feet from there. Therefore, the usable runway length is not going to change, as all of the shift is needed to make the north end of the runway legal. The practical effect is planes taking off upriver will be slightly higher as they go over Gravelly and towards Rosslyn (and consequently, downriver takeoffs will be lower over the Wilson Bridge and Alexandria).
So, to answer your question, the threshold, rotation and landing points will all move 300 feet south, and the runway length will be unaffected.
RFields5421 From United States of America, joined Jul 2007, 6150 posts, RR: 25 Reply 10, posted (4 years 7 months 6 days 14 hours ago) and read 1943 times:
Quoting Dcboy (Reply 9): I wonder if the extension will take place soon or nearer to 2015 when the FAA rules go into effect.
Since they have only just finished receiving public comment before the Environmental Impact Assessment - I'll bet it's at least 3 to 5 years from start of construction.
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