Sectional use

Kev writes:

No. There's low visibility every day.

But there's reliable IFR navigation every day, too. What if that goes
away?

It's not the airliners that would suffer from a GPS spoof. They don't
use it, and there's lots of other coverage. (And the close terrain
calls that you do get, have nothing to do with GPS either.)

That's today. What about tomorrow?

it's the GA pilot, out of ATC contact, totally trusting his handheld
or panel device, who'd be at risk.

Alas! GA pilots are often at risk, although it's usually their own
fault.

I did some flying last night with just a chart and VORs. It has been
a long time and it made me a bit nervous. But nothing compared to not
having navaids at all.

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

Mxsmanic wrote:
Newps writes:

What the hell are you talking about? Fuzzing up the GPS signal doesn't
affect anything else.

If the aircraft are being guided by GPS, it messes up everything.



No aircraft are in that respect.

ATC did notice. Immediately.




Mxsmanic wrote:
BDS writes:

This whole scenario is a stretch. It's not gonna happen and even if it did,
I doubt that it would be much more than a temporary inconvenience.

Nobody could ever slam an airliner into a building. Non-pilots
wouldn't have the skills, ATC would notice, they'd be intercepted in
no time, and just the whole pattern of them getting ready for such a
ridiculous attempt would be spotted by the FBI and the CIA. The whole
scenario is a stretch.

The 496 displays terrain quite nicely. I haven't upgraded the
software in our 2000c to do so, but it has the same capability. (Of
course, most of our "terrain" worries are towers, here in the
Midwest...)I thought it was bad form to look at the little GPS screen when you're
supposed to be looking out the window.

My type of flying (VFR, mostly in the Midwest) means that I only use
the "terrain" feature of my GPS to "see" radio towers before they come
into visual range.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

Mxsmanic wrote:
Newps writes:

That's a no brainer. "Attention all aircraft using GPS, fly your
present heading."

Then what?

See the very next line, you putz.




Then you can explain to everybody what the problem is
and that you'll be assigning the ones that need it alternate instructions.

They all need alternate instructions immediately.


Which is what I just got done saying. Do you even read what you respond to?




Nope, weather is irrelevant. Aircraft wouldn't be wandering around.

They will be once their navaids become unreliable in low visibility.


One navaid, of which very few aircraft are even using in the system.
Visibility is not relavant.




We did on 9/11. We emptied the skies of every aircraft in short order
and never had so much as an operational error.

We did that because we were hysterical and had no idea of what was
happening (I still think it was a stupid move).



Nice try at a deflection. Got anything relavant to say?

Mxsmanic wrote:
Kev writes:

No. There's low visibility every day.

But there's reliable IFR navigation every day, too. What if that goes
away?


You don't remove reliable IFR navigation by screwing with the GPS system.

On Jan 29, 8:47 pm, "BDS" wrote:
Do you typically fly around on moonless nights below the surrounding terrain
using your gps to guide you through the valleys? Didn't think so.

Through valleys? No, not me. Others have. And yes, pilots in this
area (NW NJ) have slammed into the surrounding mountains on dark
nights. The terrain isn't far away from the airports. And sure,
those with GPS use it to help stay away from them. Don't you? Or
are you in the flatlands?

Interestingly, the second case in the following near-CFIT compilation
occurred in the NW NJ area... no, it wasn't GPS-related, but the point
is that it's not hard to hit terrain around here, even under ATC
control:

http://asrs.arc.nasa.gov/report_sets/cftt.pdf

This whole scenario is a stretch. It's not gonna happen and even if it did,
I doubt that it would be much more than a temporary inconvenience.

Well, first you claimed GPS couldn't be spoofed, so you were wrong
there. Now you claim CFIT's couldn't happen if it was spoofed. I
politely disagree. Heck, even without GPS being screwed up, near
CFITs are damned common. In my neck of the woods, I think that
spoofing GPS could easily cause accidents.

Cheers, Kev

Newps writes:

You don't remove reliable IFR navigation by screwing with the GPS system.

You do if it depends on GPS.

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

Mxsmanic,

Anyway, it's not a good idea to rely too much on GPS, or on any other
one navigation method.

And you would know to make a judgement like that how?

I just finished flying from the Grand Canyon to Phoenix by VORs

No, you didn't.


--
Thomas Borchert (EDDH)

Mxsmanic,

How many commercial flights currently use GPS?

Essentially all of them.


BRUHAHA!

--
Thomas Borchert (EDDH)