Riddle me this, pilots

wrote in message ...

How would that provide proof that the collision took place in IMC?


Because the guy at 7000 stated he was in IMC.

Peter Duniho wrote:

wrote in message ...
That is exactly what a TCAS RA does, and it relies on "unverified" Mode C.

As I mentioned, this is not as safe as people (i.e. you) would like to
think.

It has already saved a few friends of mine, in one case IFR vs. IFR in the
flight levels. Perhaps it is not as safe as it could be, but it's a lot safer
than not having it at all. Same goes for GPWS and EGPWS.

"Maule Driver" wrote:
Yep, this kind of Mode C anomoly happens in ZTL airspace too.
That's one
reason we always go with pilot reported altitude over Mode C
readout.

First time I was called on an inaccurate Mode C by ATL, I took it to
the
shop. They said it was OK and serviced it anyway. ATL called me on
it
again but it's fine everywhere else, almost....

I used to have this trouble westbound through Gulfport's airspace all
the time. It never happened anywhere else and two trips to the shop
didn't help.When I replaced the xponder and encoder with more modern
stuff, the problem disappeared.
--
Dan
C172RG at BFM

Newps wrote:

The problem is you spent $200 on an encoder 10 years ago and expect it
to work for a lifetime. You very rarely if ever see a bad mode C on an
airliner.

The implication is that airliners use better transponders and/or associated
equipment. What are they using?

George Patterson
Brute force has an elegance all its own.

Newps wrote:

If the TCAS gives an RA the airliner must take the action
suggested.

Do TCAS RA's take terrain into account?

wrote in message ...
It has already saved a few friends of mine, in one case IFR vs. IFR in the
flight levels. Perhaps it is not as safe as it could be, but it's a lot
safer
than not having it at all.

Again, you are mistaking a technology that helps increase overall safety
statistics with one that can be counted on in every situation to improve
safety.

There's a difference.

In article ,
Roy Smith wrote:

If the TCAS gives an RA the airliner must take the action
suggested.

Do TCAS RA's take terrain into account?

TCAS units do not contain terrain databases.

--
Bob Noel

Roy Smith wrote:
Newps wrote:


If the TCAS gives an RA the airliner must take the action
suggested.


Do TCAS RA's take terrain into account?

Yes, the airplane knows how high it is. It will not drive it self into
the ground.

Newps wrote in message news:dTf1b.167931$cF.58574@rwcrnsc53...
Roy Smith wrote:
Newps wrote:


If the TCAS gives an RA the airliner must take the action
suggested.


Do TCAS RA's take terrain into account?

Yes, the airplane knows how high it is. It will not drive it self into
the ground.

Knowing how high it is, is only part of what's needed -- does it
know where it is, and how high the terrain is nearby?

Cheers,
Sydney

"G.R. Patterson III" wrote in message
...


Newps wrote:

The problem is you spent $200 on an encoder 10 years ago and expect it
to work for a lifetime. You very rarely if ever see a bad mode C on an
airliner.

The implication is that airliners use better transponders and/or
associated
equipment. What are they using?

Better maintenance maybe?

Chip, ZTL