TCAS, RVSM and the North Atlantic Route System

derg

derg

Apparently a "terse" writer
Staff member
Self explanatory.

Four different altitudes, the same track, three different "offsets"

Enjoy.

"Do you a belieeeeeeve in RVSM? :) "

The evidence...

IMG_1913.jpg


The ones we could see...

IMG_1904.JPG


We were doing .81 and the 747 passed us and the airbus like we were standing still.

IMG_1906.JPG


The video:

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very nice video. it must be fun the first couple of times to see them just wiz by you. i know i would be somewhat amazed by it. then again i am an impressionable kid.
 
Yo...I thought you were talkin' about doing one of those offset things in the FMC. I kinda forgot how you do that. A good F/O would know, though.

To me, it looks like you had vertical seperation all through the event. Why the need for an offset?

KLM biz class was very nice. Free beer in the lounge at AMS...
 
The Collins FMS has a little option on the main legs page just below the bottom right line select that you can but a RX or LX number in to offset. It makes a pretty pink line on the screen too!

Nice pictures Doug.
 
DE727UPS said:
Yo...I thought you were talkin' about doing one of those offset things in the FMC. I kinda forgot how you do that. A good F/O would know, though.
Click to expand...

Not that I'm a good FO but I think it's on the legs page, and then you type in R3 for a right offset. It's handy for weather avoidance domestically, but I can't say I've used it more than a couple times.

To me, it looks like you had vertical seperation all through the event. Why the need for an offset?
Click to expand...

Wake turbulence. If you've got someone 1000 above a few miles ahead, the wake will rock your world. So if you start picking up a little burble, you can offset up to three miles to stay out of it.

It's the SLOP or "Strategic Lateral Offset Program".

Or Procedure... I'm not really sure. Staplegun oughta know as he's the ER expert on the site. The rest of us Southernjets ER guys are virtual noobies! :)
 
I know we can do it with the Honeywell POS, too. However, I've only had to do it once. We got in BA's wake as we were both climbing out of IAH going through 17,000. Freaky stuff.
 
Doug,

How interesting that you posted this! I am currently working on developing requirements for offset procedures in en route airspace (for ARTCCs). Right now, offset procedures totally throw off automation systems. The computers keep thinking that the aircraft is not conforming to it's cleared trajectory and keeps trying to guess how the plane will turn back to its path. It also screws up posting (sending of the flight plan to the correct sector controller).

I am looking at what oceanic systems do, which isn't a whole lot because there is really not much monitoring over the oceans.

Would it be ok if I showed the video to people here at work? We're trying to get some pilot and controller inputs into how offsets are flown right now.

Mahesh
 
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