A couple of questions for the more experienced.
Thread Starter
Joined: Oct 2011
Posts: 20
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From: Everywhere
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.
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.
PPRuNe supporter
Joined: Dec 2003
Posts: 1,676
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From: Planet Earth
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.
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.
Joined: Oct 1999
Posts: 302
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From: N.Ireland
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.
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.
Joined: Jan 2003
Aviation Qualifications: ATPL
Posts: 279
Likes: 17
From: Europe
Please, do you have a reference that the RF has changed to QNH altimetry below transition?
GF
GF
.Cheers,
DBate
Joined: Feb 1998
Aviation Qualifications: ATPL
Posts: 1,595
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From: Formerly of Nam
So please bare with me guys...
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!
