Instrument Flying: Technique in Weather Page: 8
[74] p. ; 28 cm.View a full description of this book.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
RESTRICTED
T. O. No. 30-10OD-14. Time allowance for detouring bad weather.
5. Closed weather at destination requiring use of
alternate flight plan.
Thinking over this list, Scratchy realized that ceil-
ing and visibility were not the whole story. As far
as conditions at your destination went, you either had
enough ceiling and visibility to make a safe landing,
or you hadn't. If you had, you landed; if you hadn't,
you followed your alternate flight plan. On the way to
your destination, low ceiling and visibility along the
route could make you use an instrument flight plan
and might indicate the advisability of certain precau-
tions as to the weather. Beyond that, if you were a
competent instrument pilot flying a good airplane, you
did not have to worry about ceiling and visibility as
such.
WEA OTHER ELEMENTS CLASSIFIED
ACCORD/NG o TMEIR EFFECT
ON NORMAL FLIGHT
1. VARIATION or GROUND SPEED
W/ND VEL OC/T Y
OAT FL/GM7 4EVEL
@ WINP DIRECT/ON
<'AT FLIGHT LEVEL
TIME FOR TRAFFIC CLEARANCE OR TO
M41(E INSTRUMENT APPROACH AT
DESTINATION
, .
TIME REQUIRED TO DETOUR ADVERSE
WEATHER- VERTICAL AND HORIZONTAL
C LOSED N "AT DEST/NA 4TON AIRPORT
NECESS/TAT/NG ALTERNATE FLIGHT PLAN
-----------------
M "
~~MENIn going over the list again, Scratchy saw that all
five of the factors he had listed could usually be
reckoned pretty accurately before take-off. He would
have the probable wind direction and velocity in his
forecast; time likely to be lost in waiting for traffic
or making an instrument approach was already an old
story. His alternate flight plan would be ready. With
sufficient fuel and a reserve for ordinary emergencies,
all the problems posed by variations of ground speed
could be safely solved.
CAN YOU TAKE IT?
The second classification was that of weather ele-
ments reducing the efficiency of an airplane. Scratchy
had more difficulty listing the weather elements in this
category. It was mainly a process of elimination. It
surprised him when he finally realized that only three
factors really reduced an airplane's flyability.
-REDUCTION OF AERODYNAM/C
_' EFFICIENCY OF THE AIRCRAFT
-- ---- - - -
-- - ----- ------- -RESTRICTED
Section 2
a
Eu
T4/R4/L ENCE
/CE .AC RET/ONcy
INTENSE PREC/P/AT/ON
A
C) VA N CERIAI G STRUC T RE OR
PARTS OF THE A/RcRAFT
ExREMEr( Bru.ENCE MA/LIC'y44,
8
Upcoming Pages
Here’s what’s next.
Search Inside
This book 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 Book.
Army Air Forces. Instrument Flying: Technique in Weather, book, January 1, 1944; Ashland, Ohio. (https://texashistory.unt.edu/ark:/67531/metapth873973/m1/14/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting National WASP WWII Museum.