Icing Page: 6 of 22
The following text was automatically extracted from the image on this page using optical character recognition software:
FRAME 5 (Continued)
- - - - - - - - - _ }a F l
-- Diagram- - -
In Diagram A, the helicopter is in IFR conditions. Low visibility on the surface prohibits a
landing. If he continues flight at this present altitude there will be excessive ice buildup on his
If he knows where the freezing level is, the aviator could ascend into the warm air mass above
freezing temperatures. If the flight were under VFR conditions at a lower altitude than shown
above with surface temperature below 0 degrees C, he should descend and land, or reverse course.
.- - . FLIG HT PATH
\\- XA - -o~c
In Diagram B the flight is VFR, low altitude over flat terrain with surface temperatures above
freezing. In this case the aviator descends to an altitude that is above freezing and continues
Here’s what’s next.
This pamphlet can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Pamphlet.
Snyder, Henry W. Icing, pamphlet, February 1971; Texas. (texashistory.unt.edu/ark:/67531/metapth46570/m1/6/: accessed October 18, 2017), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting Boyce Ditto Public Library.