SIFT SIFT Aviation Weather and Navigation Questions and Answers

Question 1

Which cloud type is considered most hazardous to Army aviation due to severe turbulence, icing, and lightning?

Accepted Answer

Cumulonimbus

Answer

Cumulonimbus clouds are associated with thunderstorms and produce the most severe aviation hazards: extreme turbulence, hail, icing, windshear, and lightning.

Question 2

What does the aviation acronym VFR stand for?

Accepted Answer

Visual Flight Rules

Answer

VFR stands for Visual Flight Rules, the set of regulations under which a pilot can fly using outside visual references rather than relying solely on instruments.

Question 3

Which atmospheric layer contains virtually all weather phenomena that affect Army aviation operations?

Accepted Answer

Troposphere

Answer

The troposphere, extending from the surface to roughly 36,000 feet, contains almost all of the water vapor and weather that pilots encounter.

Question 4

Wind shear is most dangerous for helicopter operations during which phase of flight?

Accepted Answer

Takeoff and landing

Answer

During takeoff and landing, helicopters operate at low speed and low altitude, leaving little margin to recover from the sudden airspeed or lift changes caused by wind shear.

Question 5

What is the standard temperature lapse rate in the troposphere used for pressure altitude calculations?

Accepted Answer

2°C per 1,000 feet

Answer

The International Standard Atmosphere (ISA) defines a lapse rate of approximately 2°C (3.5°F) per 1,000 feet of altitude gain in the troposphere.

SIFT Exam Practice Test

SIFT Exam Practice Test

SIFT SIFT Aviation Weather and Navigation Questions and Answers