DCA Rwy 1-19
 

The 10-9 lists the length as 7169'.

10-9A lists 6869' in the takeoff distance box. I distinctly remember the 6869' being previously listed on 10-9.

So, an extra 300'. 150' on each end. EMAS add? I don't recall any runway extension programs at the airport. So, any insight why the length value is different between the two pages?

Some airports publish takeoff distance available, accelerate/stop distance available and LDA shorter than the actual pavement length to provide a runway safety area. You have to calculate your performance numbers based on the published numbers so it provides a safety margin when there’s not much overrun. No EMAS shown for 1-19.

Thank you for the EMAS correction.

Asking another way; why does the 10-9 show 7169' when it previously listed 6869' and there has been no extension of usable runway (to the extent of my knowledge.)?

It there was construction in 2012 that added 300 feet to the south end of 1/19. Looks like they keep the old TORA, TODA, ASDA and LDA to provide a safety margin.

https://web.archive.org/web/20120712...eagan/3925.htm

Google could've been my friend, had I let it.

Thank you for the reference.