Section X
Safety Information
~ft
Single Engine (Piston)
5. Do avoid by at least 20 miles any thunderstorm identi-
fied as severe or giving an intense radar echo. This is
especially true under the anvil of a large cumulonimbus.
6. Do circumnavigate the entire area if the area has 6/10
or greater thunderstorm coverage.
7. Do remember that vivid and frequent lightning indicates
the probability of a severe thunderstorm.
8. Do regard as extremely hazardous any thunderstorm
with tops 35,000 feet or higher, whether the top is visu-
ally sighted or determined by radar.
If you cannot avoid penetrating a thunderstorm, the follow-
ing are some do's BEFORE entering the storm:
9. Tighten your safety belt, put on your shoulder harness,
and secure all loose objects.
1 o. Plan and hold your course to take you through the
storm in minimum time.
11. To avoid the most critical icing, establish a penetration
altitude below the freezing level or above the level of
-15°C.
12. Verify that pitot heat is on and turn on carburetor heat
or engine anti-ice. Icing can be rapid at any altitude and
cause almost instantaneous power failure and/or loss of
airspeed indication.
MOUNTAIN FL YING
Pilots flying in mountainous areas should inform themselves
of all aspects of mountain flying, including the effects of top-
ographic features on weather conditions. Many good articles
have been published, and a synopsis of mountain flying
operations is included in the FM Airman's Information Man-
ual, Part 1.
Avoid flight at low altitudes over mountainous terrain, par-
ticularly near the lee slopes. If the wind velocity near the
10-32 May, 1994
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