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-   -   A couple of questions for the more experienced. (https://www.pprune.org/tech-log/471419-couple-questions-more-experienced.html)

LikeABoss 10th Dec 2011 18:14

A couple of questions for the more experienced.
 
So please bare with me guys as I have a couple of questions to ask, and they are very irrelevant to each other.

1) When flying an approach, I notice on the FMA it says Cat3 single, and sometimes Cat3 Dual.
We were NOT doing a cat 3 approach though.
Is this just the limit of what kind of landing you can do?

2) When landing, should we be looking at barometric altimeter or radio altimeter?
Once the QNH is set, the baro could read 2000 feet (or whatever it is), whereas the radio altimeter will always read height directly above threshold.

3) When flying a precision approach we call the minimum DH, when non precision we call it MDA.
Height is right above ground level, altitude is corrected for MSL.
Whey don't we stick to either height or altitude?

Thanks guys :)
Sorry for what some may find silly questions.

frontlefthamster 10th Dec 2011 18:19

Much as I like the dialogue here (though I'm one who prefers flight simmers to post in the relevant forums and not to say 'we' when they mean 'you')...

There is no way I'm taking my clothes off! ;)

Dream Land 10th Dec 2011 18:53

1. The aircraft is monitoring it's current capability based on different system status.

2. Depends on the type of approach, cat 1 being based on baro, cat 2 radio.

3. Both are in reference to baro in MSL, Russia used to reference above ground (QFE) but has since changed, at DH you must make a decision, if visual references are not there, you make a missed approach. MDA means minimum decent altitude, in the old days, you never were allowed to decend below this height (baro reff MSL), nowadays they allow you to decend below this height when making a Constant Rate of Decent approach during the missed approach.

Torque2 10th Dec 2011 19:12

With the best will in the world this whole site has degenerated into teaching either flight simmers how to fly an airbus or supposed pilots the absolute basics of flying.

Now that the US is hot on refusing training visas to all and sundry it seems that the next best thing is to learn how to fly airbuses particularly by pprune.

:ugh::ugh::ugh:

kip 11th Dec 2011 21:40

Boss!! I hope you fly behind your pc, if not pls let us know which airline not to fly with!

And yes silly q. Next time try if left seat have an answer, if not get back to the pc!

galaxy flyer 11th Dec 2011 23:36

Dreamland

Please, do you have a reference that the RF has changed to QNH altimetry below transition?

GF

DBate 11th Dec 2011 23:41


Please, do you have a reference that the RF has changed to QNH altimetry below transition?

GF
Russia is still using Meters QFE below transition level. The only thing that changed is that they switched their flight levels above transition level to feet instead of the flight levels in meters they used before. That changed mid November if I am not mistaken ;).

Cheers,
DBate

Slasher 12th Dec 2011 01:37


So please bare with me guys...
Why is it a lot of these Y genners are always telling us
to get naked with 'em whenever they ask us anything?

Its like me asking "Gentlemen, could you please take
off all your clothes while I ask you some questions on
induced sonic pressures within the RR Olympus engine
as fitted on Concorde..."

Not that I ever would!


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