What is Raw Data?

[Clocks]

I see, so it's basically like flying instruments on gauges alone, say in a 172M model?

The flight director just tells you what it thinks you should be doing (based on what you've programed). It's also what the autopilot would do if it was on (since the AP follows the flight director). When you are flying on "raw data" you are using your own skills to determine where to point the airplane (just like in a 172) instead of relying on or referencing what the computer thinks you should be doing.

Attached pic...raw data on the left...FD is on in the right picture.

 

[fish314]

Wouldn't "raw data" be the -135 pre-CRAG?

ha, I actually go back that far (just barely-- I have 8 flights on the steam gauges). That's RAW, brotha! As a co, I never knew where the crap we were!

(Of course, that was before 800ish hours in the tweet. That'll make an instrument god out of anybody.)

 

[Duck_Twacy]

My entry for the Expressway Visual:

DIALS
DIALS085/RW31134
RW31

Put 2500 on DIALS and you are good to go.

That said, I DO fly the River Visual for 19 with out any snowflake.

Our "entry" for the Expressway Visual:

After being cleared direct DIALS...

PNF: "You see the tanks?"
PF" "I got 'em"

I'm not even sure if DIALS is in our database...we're so far behind the technology power curve I think our updates come on punchcards :laff:

 

[Polar742]

Our "entry" for the Expressway Visual:

After being cleared direct DIALS...

PNF: "You see the tanks?"
PF" "I got 'em"

I'm not even sure if DIALS is in our database...we're so far behind the technology power curve I think our updates come on punchcards :laff:

I remember when the tanks were big, BIG concrete tanks you could see from Jersey. Not the sissy-sized ones they were replaced with.

First trip out there after the tanks changed: "Chautauqua, you got the tanks in sight"

Us "Yeah, in sight"

"OK, cleared the Expressway 31 visual"

Us (internal) "WTF happened to the tanks?"anic:
"dunno"
"You good?"
"yeah, just fly down the expressway"

 

[BobDDuck]

It does suck that they took down the big tanks. That and the NDB is gone. RNAV fix only now.

 

[germb747]

navigation went to DF (Direction finding - where you had to crank the antenna) to ADF (the antenna moved itself).

Awesome post Polar742 . You know, I always wondered where the "automatic" came into play in ADF. Funny, in the C-5 (legacy, not AMP) we're still required to log NDB approaches every half, yet we're not allowed to do GPS approaches even though it was the gubmint who put those satellites up there for military use to begin with!

 

[derg]

That old Cessna 172N that everyone was too cool to fly in because you'll always have a magenta line? Yeah, that!

 

[jtrain609]

Raw data is actually Latin and is directly translated into English as "certain death."

 

[derg]

Raw data is actually Latin and is directly translated into English as "certain death."

When we eventually share a cockpit, you're hand-flying raw data.

And I'm going to talk crap to get into your head.

 

[jtrain609]

When we eventually share a cockpit, you're hand-flying raw data.

And I'm going to talk crap to get into your head.

Ahhh....check your text messages, I can't type what I need to say here!

 

[derg]

To answer:

 

[CaptBill]

I've heard a few people throw that term around when discussing navigation. What exactly does it mean?

Very good question. Raw data is navigational data derived from a source outside the aircraft. VOR, ADF, ILS and DME are all examples of raw data. Many modern aircraft have the ability to compute navigational data by sampling sources such as GPS, VOR and DME. It then computes all this information and arrives at a solution where the computer thinks it is at any given point in time. Most of the time it is very accurate; however, this is not considered raw data since it is internally processed information. Remember, the Flight Directors simply display what you ask them to so they could be displaying raw data or data the FMC (Flight Management Computer) generates which is not raw data. It is typical, when flying into airports where terrain could be an issue, for the pilot flying to be flying on FMC computed data. The non flying pilot makes sure the FMC is behaving itself by tuning a VOR or other NavAid to make sure that raw data and FMC data are saying the same thing.

 

[MikeD]

When we eventually share a cockpit, you're hand-flying raw data.

And I'm going to talk crap to get into your head.

That'd be fun to watch from the bax seat.