Flight Training - July 2013 - 44
WEATHER»
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44 /
0.002112 slugs per cubic foot. This is the
standard density for an altitude of 4,000
feet.
We say that the density altitude at that
time and place is 4,000 feet. In simple
terms, the density altitude tells you
that an aircraft will perform as though
it were at that altitude in the standard
atmosphere.
There is neither a simple way nor an
instrument you can use to measure the
air’s density. This isn’t a problem for
pilots, however. In fact, performance
charts such those as in the Cessna 172
POH use temperature and atmospheric
pressure to give performance figures,
such as takeoff distance and rate of climb.
Some, but not all, will give you the density
altitude to use with other charts or performance calculators.
If you need the density altitude, such
as to use in a ground school presentation, go to the Weather Calculator on
the El Paso, Texas, National Weather
Service website (www.srh.noaa.gov/
epz/?n=wxcalc). Scroll down to “Pressure Conversions,” where you’ll find
a link at the bottom of the left-hand
column to “Density Altitude.” Click
on “Formulas” at the bottom of the
right-hand column. This will help you
appreciate all of the work performance
charts or calculators do for you.
latest book is The AMS Weather Book: The Ultimate Guide
to America’s Weather.
Watch Video
FLIGHTTRAINING.AOPA.ORG
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FLIGHTTRAINING.AOPA.ORG
http://www.AOPA.org/PPSstudent
http://www.srh.noaa.gov/epz/?n=wxcalc
http://www.srh.noaa.gov/epz/?n=wxcalc
http://FLIGHTTRAINING.AOPA.ORG
Flight Training - July 2013
Table of Contents for the Digital Edition of Flight Training - July 2013
Flight Training - July 2013
Contents
Member Benefits
Right Seat
Centerline
Letters
Spin Doctor
Success Story News
How It Works
News
After the Checkride
Asi News
Training Products
Final Exam
Flight Lesson
Checkride
Flying Carpet
Weigh In
Just Like the Real Thing
Glider Pilot for a Day
Technique
Weather
Go or No/go?
Career Advisor
Tech Talk
Two Touchdown Techniques
Keep Your Distance
Talk to Yourself
Advertiser Index
Debrief
Flight Training - July 2013 - Flight Training - July 2013
Flight Training - July 2013 - Cover2
Flight Training - July 2013 - Contents
Flight Training - July 2013 - 2
Flight Training - July 2013 - 3
Flight Training - July 2013 - Member Benefits
Flight Training - July 2013 - 5
Flight Training - July 2013 - Right Seat
Flight Training - July 2013 - 7
Flight Training - July 2013 - Centerline
Flight Training - July 2013 - 9
Flight Training - July 2013 - Letters
Flight Training - July 2013 - 11
Flight Training - July 2013 - Spin Doctor
Flight Training - July 2013 - 13
Flight Training - July 2013 - Success Story News
Flight Training - July 2013 - How It Works
Flight Training - July 2013 - News
Flight Training - July 2013 - After the Checkride
Flight Training - July 2013 - Asi News
Flight Training - July 2013 - 19
Flight Training - July 2013 - Training Products
Flight Training - July 2013 - 21
Flight Training - July 2013 - Final Exam
Flight Training - July 2013 - Flight Lesson
Flight Training - July 2013 - 24
Flight Training - July 2013 - Checkride
Flight Training - July 2013 - Flying Carpet
Flight Training - July 2013 - 27
Flight Training - July 2013 - Weigh In
Flight Training - July 2013 - 29
Flight Training - July 2013 - 30
Flight Training - July 2013 - 31
Flight Training - July 2013 - Just Like the Real Thing
Flight Training - July 2013 - 33
Flight Training - July 2013 - 34
Flight Training - July 2013 - 35
Flight Training - July 2013 - Glider Pilot for a Day
Flight Training - July 2013 - 37
Flight Training - July 2013 - 38
Flight Training - July 2013 - 39
Flight Training - July 2013 - Technique
Flight Training - July 2013 - 41
Flight Training - July 2013 - Weather
Flight Training - July 2013 - 43
Flight Training - July 2013 - 44
Flight Training - July 2013 - Go or No/go?
Flight Training - July 2013 - Career Advisor
Flight Training - July 2013 - 47
Flight Training - July 2013 - Tech Talk
Flight Training - July 2013 - Two Touchdown Techniques
Flight Training - July 2013 - Keep Your Distance
Flight Training - July 2013 - Talk to Yourself
Flight Training - July 2013 - 52
Flight Training - July 2013 - Advertiser Index
Flight Training - July 2013 - 54
Flight Training - July 2013 - 55
Flight Training - July 2013 - Debrief
Flight Training - July 2013 - Cover3
Flight Training - July 2013 - Cover4
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