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Pilots, check your bearings: Boeing Field catches up with Earth’s magnetic field

Because the Earth’s magnetic field has shifted over the decades, the runway numbers at Boeing Field have just been changed, requiring pilots to pay attention and change their charts. ( Más...

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KPAE isn't the only airport that got caught on this.

McCarran Int'l at Las Vegas also had changes made. 25L/7R and 25R/7L were just changed to 26L/8R and 26R/8L.

Also with this, all SIDs and STARs to the airports affected were updated.
John Clark 2
KPAE runway headings didn't change. It was KBFI.
Good catch. I confused the airports. Thanks.
alex hidveghy 1
One is well north of Seattle (approx.. 30 miles), near Everett while the other is south of the city........
alex hidveghy 1
Yup, 2 days ago but only the two east-west runways, not the north-south.
Bill Harris 1
How long ago did DCA change from 36/18 to 1/19?
Bill Harris 1
Ahh, Wikipedia says 1999.
Glenn Mottley 1
Did I miss something?...east west runways @ KPAE and KBFI?...
Ed Pue 1
We had ours change at CYYC Calgary about a year ago.

[This comment has been downvoted. Show anyway.]

alex hidveghy 2
Correct. Not new but also doesn't happen that often. Requires quite a bit of mx for the airfield operator in terms of painting and changing out signs on the filed, though!
Sorry, but this is not correct. Pilots should ALWAYS have updated charts, especially if there are for example, at KLAX, 2 sets of parallel runways, and the numbers change causing all of them to be renumbered. instead of the 24s/6s and 25s/7s, you have 25s/7s for the north complex, and 26s/8s for the south complex. If you're told that you're cleared for the ILS 25R approach, and you have old charts, you'd be lining up for 26R, on the SOUTH SIDE, instead of 25R, on the NORTH SIDE.

This is why pilots have to keep their charts updated, because without that, you'd screw up a hell of a lot of traffic flows.

Better yet, if you're flying a chart that gets upnumbered because the runways were renumbered, and you're flying according to an old chart, you're lining up for the wrong approach.

IF anything, the idiot would be the person who believes that pilots don't change their charts. e.g., you.
OK. I don't think the idiot comment was necessary, I was just submitting a squawk that I found that was related to aviation.

[This comment has been downvoted. Show anyway.]

Bob Myers 6
Yes, it is very pleasing to those who don't understand the process and have absolutely no idea what they're talking about in the first place. To everyone else, it's just part of a process that has been going on for literally millions of years, with the poles occasionally reversing completely. Nothing at all unusual about it, and no one is ever "totally confused" about what's going on here unless they were coming into it completely ignorant of the facts.
Will Stubbs 5
Not sure if you're trolling, but the magnetic poles move constantly. Daily, even. What we consider "magnetic north" can move in a loop as wide as 50 miles. In fact, about 800,000 years ago the poles were switched around.
alex hidveghy 2
.........which we why we have the ditty, west is best (+), east is least (-) as every private pilot and student should know. There is more than one North just like there are more than one speed (airspeed, ground speed, IAS etc.)
Wilbur Wright 1
I'm not a flyer, can you elaborate on the "West is best"?
alex hidveghy 1
It's a memory aid for ADDING the variation (if it's so many degrees west, eg. 7*W) to a TRUE heading or track to get the MAGNETIC heading/track. For easterly variation (5*E), you subtract the variation from true to get magnetic.
The point being is that measuring on any map whether aeronautical or marine, the lines of longitude are aligned with TRUE north, but you fly/sail via the magnetic compass or compass system in your aircraft or boat. So, to summarize, you measure true from your chart but use magnetic when you operate.
The rhyme east is least, west is best is just an easy was to recall whether you add or subtract.
paul gilpin 2
i learned this back in 1975, doing a term paper on the natural resources of the great state of alaska. coal, natural gas, oil, etc. and i stumbled on this, little known fact.
Wilbur Wright 1
Didn't realize it was such hidden knowledge! I learned this back when I was a kid and my dad was teaching me orienteering.

By the way, what's "OT"?
James Carlson 3
Thank you for a spectacularly weird comment!

According to radiometric dating and many, many other sources, the Earth is about 4.5 billion years old, not "millions" or "trillions" and certainly not mere thousands. And it's rooted in observable and measurable facts not mere "belief."

And, no, it has nothing in particular to do with the process of evolution, a process that is easily observable in practice going on *right* *now* -- MRSA, anyone? -- so the connection you're drawing is most bizarre.

And how you jump effortlessly from the migration of the location of the magnetic poles versus the planet's rotational axis to the unrelated topic of the origin of species is just creme de la weird.

Love everything about your comment. Thanks!


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