Flight Training - November 2012 - 38

WEATHER

By Jack Williams
ICE CRYSTALS sometimes fall from clear skies when the temperature is in the single digits or colder.

WHY YOU SHOULD STAY CLEAR OF IT
ce storms are often the most disruptive kinds of winter weather. Plows and shovels can move snow out of the way, and snow rarely breaks bare tree limbs. In contrast, the freezing rain that falls during an ice storm instantly turns to ice when it hits anything that’s cold—such as tree limbs. A weatherwise
pilot looking at the ice-encrusted tree limb that ripped down her home’s power lines could say: “Structural icing brought it down.” This, in effect, is what the National Transportation Safety Board says after investigating many cold-weather aircraft crashes. Unlike with a tree limb, however, the weight of ice on an aircraft isn’t what causes it to crash. In fact, even heavy ice on an airplane often doesn’t make up for the weight of the fuel that’s already been burned. Icing causes crashes by, in effect, redesigning the wings and horizontal stabilizer, which causes them to lose lift. It also increases drag. Think of it this way: Your airplane might have been designed years ago by engineers using slide rules, or more recently with the aid of super computers running computational fluid dynamics programs. No matter what tools they

ICE IS A DRAG

I

ICING RESOURCES
Air Safety Institute Structural Icing Safety Advisor www.aopa.org/asf/publications/sa11.pdf Air Safety Institute Cold Facts: Wing Contamination www.aopa.org/asf/publications/SB02.pdf NASA: Free icing training courses and resources for pilots http://aircrafticing.grc.nasa.gov/courses. html NOAA Aircraft icing http://www.crh.noaa.gov/images/lmk/ Brian%20S/LMK_Icing_Show.pdf

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FLIGHTTRAINING.AOPA.ORG


http://www.aopa.org/asf/publications/sa11.pdf http://aircrafticing.grc.nasa.gov/courses.html http://aircrafticing.grc.nasa.gov/courses.html http://www.crh.noaa.gov/images/lmk/Brian%20S/LMK_Icing_Show.pdf http://www.aopa.org/asf/publications/SB02.pdf http://www.crh.noaa.gov/images/lmk/Brian%20S/LMK_Icing_Show.pdf http://FLIGHTTRAINING.AOPA.ORG

Flight Training - November 2012

Table of Contents for the Digital Edition of Flight Training - November 2012

Flight Training - November 2012
Contents
President’s Perspective
Right seat
Letters
Southern Exposure
How It Works
ASI News
Success Story
News
Since You Asked
News Final Exam
Tech Tip
AOPA Action
Checkride
Flying Carpet
Icy Reception
Beyond All Expectations
Technique
Weather
Flight Lesson
Voices of Reason
Tech Talk
Keep Students Stoked
He Said 'Yes' But Means 'No'
Night Moves
Advertiser Index
Debrief
Flight Training - November 2012 - Flight Training - November 2012
Flight Training - November 2012 - Cover2
Flight Training - November 2012 - Contents
Flight Training - November 2012 - 2
Flight Training - November 2012 - 3
Flight Training - November 2012 - President’s Perspective
Flight Training - November 2012 - 5
Flight Training - November 2012 - Right seat
Flight Training - November 2012 - 7
Flight Training - November 2012 - Letters
Flight Training - November 2012 - 9
Flight Training - November 2012 - Southern Exposure
Flight Training - November 2012 - 11
Flight Training - November 2012 - How It Works
Flight Training - November 2012 - ASI News
Flight Training - November 2012 - Success Story
Flight Training - November 2012 - News
Flight Training - November 2012 - Since You Asked
Flight Training - November 2012 - 17
Flight Training - November 2012 - News Final Exam
Flight Training - November 2012 - Tech Tip
Flight Training - November 2012 - AOPA Action
Flight Training - November 2012 - Checkride
Flight Training - November 2012 - 22
Flight Training - November 2012 - 23
Flight Training - November 2012 - Flying Carpet
Flight Training - November 2012 - 25
Flight Training - November 2012 - Icy Reception
Flight Training - November 2012 - 27
Flight Training - November 2012 - 28
Flight Training - November 2012 - 29
Flight Training - November 2012 - 30
Flight Training - November 2012 - 31
Flight Training - November 2012 - Beyond All Expectations
Flight Training - November 2012 - 33
Flight Training - November 2012 - 34
Flight Training - November 2012 - 35
Flight Training - November 2012 - Technique
Flight Training - November 2012 - 37
Flight Training - November 2012 - Weather
Flight Training - November 2012 - 39
Flight Training - November 2012 - 40
Flight Training - November 2012 - Flight Lesson
Flight Training - November 2012 - 42
Flight Training - November 2012 - 43
Flight Training - November 2012 - 44
Flight Training - November 2012 - Voices of Reason
Flight Training - November 2012 - 46
Flight Training - November 2012 - 47
Flight Training - November 2012 - Tech Talk
Flight Training - November 2012 - Keep Students Stoked
Flight Training - November 2012 - He Said 'Yes' But Means 'No'
Flight Training - November 2012 - Night Moves
Flight Training - November 2012 - Advertiser Index
Flight Training - November 2012 - 53
Flight Training - November 2012 - 54
Flight Training - November 2012 - 55
Flight Training - November 2012 - Debrief
Flight Training - November 2012 - Cover3
Flight Training - November 2012 - Cover4
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