Rules of Thumb
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Joined: Oct 2009
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From: Pinchbeck
Rule of Thumb
Hi all
Thanks for all your responses,
I have one for you, if its any use.
To quickly determine NM per minute, round your airspeed to the nearest 10, drop the zero and divide by 6.
Example TAS =178KTS = 180knots
Drop the zero and divide by 6:
18 divided by 6 = 3NM per minute
Thanks for all your responses,
I have one for you, if its any use.
To quickly determine NM per minute, round your airspeed to the nearest 10, drop the zero and divide by 6.
Example TAS =178KTS = 180knots
Drop the zero and divide by 6:
18 divided by 6 = 3NM per minute
Joined: Jun 2003
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From: EuroGA.org
OK, I get that.
I just wondered how many NP approaches have their continuous descent alternative at exactly 3 degrees, while not having the pre-calculated FPM figures (for various GS values) shown on the chart.
I just wondered how many NP approaches have their continuous descent alternative at exactly 3 degrees, while not having the pre-calculated FPM figures (for various GS values) shown on the chart.
Joined: Feb 2007
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From: Amsterdam
To quickly determine NM per minute, round your airspeed to the nearest 10, drop the zero and divide by 6.
Joined: May 2001
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Why not track the glideslope as indicated by the glideslope indicator?
Edit.. all so much easier on autopilot of course..
Joined: Jun 2003
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From: EuroGA.org
Maybe it is just me, but surely you find it easier to "nominate" an initial rate of descent once the glideslope has been intercepted and thereafter to make adjustments to descent rate in order to maintain the slope , rather than simply charging up and down the sky hoping to recapture it?
At the GS intercept, I drop the gear and select 1st stage flap. This gives me very close to the required -VS. And the aircraft remains trimmed as it was before. This is IMHO better than trimming in a hurry at the GS intercept.
I am sure others have different methods.
Joined: May 2008
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From: Somewhere
Have heard that
"halve your groundspeed, multiply that by 10" will keep you pretty close to a 3deg slope.
also
5x your groundspeed = required ROD for a 3 degree approach.
the above are the same, just depends on how good you are at maths!!!
sorry if someone has mentioned it and i've missed it and am repeating!
DAR, you said "you only have too much fuel when you are on fire"...
.....or if you have a boss like mine that books too many people on a flight in the heaviest aircraft and you are already on min fuel and get an earbashing from them because you 'have too much and we havn't had this problem before'.....
"halve your groundspeed, multiply that by 10" will keep you pretty close to a 3deg slope.
also
5x your groundspeed = required ROD for a 3 degree approach.
the above are the same, just depends on how good you are at maths!!!
sorry if someone has mentioned it and i've missed it and am repeating!
DAR, you said "you only have too much fuel when you are on fire"...
.....or if you have a boss like mine that books too many people on a flight in the heaviest aircraft and you are already on min fuel and get an earbashing from them because you 'have too much and we havn't had this problem before'.....
Joined: Sep 2009
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From: Arizona Bay
300' above field elevation per ever mile on final will keep you outta trouble
@1 mile...300 AGL, 2 miles 600 AGL...so on and so forth
basic pilot stuff, works every time, no matter what airplane you're in, big or small...
@1 mile...300 AGL, 2 miles 600 AGL...so on and so forth
basic pilot stuff, works every time, no matter what airplane you're in, big or small...
Joined: Sep 2009
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From: Arizona Bay
this has been totally abused on an earlier thread, for sure, but here we go...
can't use the runway behind you
can't use the altitude above you
the only time that you'll ever have too much fuel on board is when you're on fire...
git sum!
never jim-jam the flim-flam...
can't use the runway behind you
can't use the altitude above you
the only time that you'll ever have too much fuel on board is when you're on fire...
git sum!
never jim-jam the flim-flam...
Joined: May 2001
Posts: 2,118
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300' above field elevation per ever mile on final will keep you outta trouble
@1 mile...300 AGL, 2 miles 600 AGL...so on and so forth
basic pilot stuff, works every time, no matter what airplane you're in, big or small...
@1 mile...300 AGL, 2 miles 600 AGL...so on and so forth
basic pilot stuff, works every time, no matter what airplane you're in, big or small...
Joined: Jan 2008
Aviation Qualifications: ATPL
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From: The Smaller Antipode
Is anyone actually looking out of the window ?
My first Nav. instructor told me to stop doing a maths exam in a rattling steel cabinet. Same goes for flying the beast. KISS
My first Nav. instructor told me to stop doing a maths exam in a rattling steel cabinet. Same goes for flying the beast. KISS
