SAMRA 15-5

What happens to indicated airspeed (IAS) and takeoff distance as density altitude increases?

If a NOTAM indicates that a VOR is unusable from 1900Z, can it still be used if departure is at 1800Z?

What is the accuracy of RAIM for enroute/terminal/approach?

Which factor is associated with thunderstorm formation?

In a QS stationary front, what is the direction of the wind?

What does the line of dashes on an upper chart represent?

What does it mean when a line connects all points with the same altitude?

How much of the sky is the cloud in the metar/taf covering?

How does temperature change if flying westbound to cross a trowal?

If the same air pressure gradient exists, will the wind be stronger in high-pressure systems or low pressure systems?

What will be the result when saturated air is cooled and condensation has already happened?

Which of the following will initially change when subsiding air has already saturated?

Cloud and Density Altitude

AC 5 is the answer related to a cloud query.
Airspeed Indicator (IAS) remains constant during takeoff as density altitude increases; however, True Airspeed (TAS) increases and takeoff distance lengthens.

Contour Lines

A line connecting points of equal altitude is known as a contour line.

NOTAM and VOR Usability

A VOR becoming unusable at a specific time does not affect its usability prior. For example, a T/O at 1800Z allows usage until 1900Z.

RAIM Accuracy

Required Receiver Autonomous Integrity Monitoring (RAIM) accuracies for different phases:
- Enroute: 2 miles
- Terminal: 1 mile
- Approach: 0.3 miles

Thunderstorm Formation

Key factors for thunderstorm development include lifting forces, adequate moisture, and a steep lapse rate.

Wind Direction in Stationary Fronts

Wind direction at a quasi-stationary (QS) front runs parallel to the front itself.

Temperature Changes Across Trowal

While flying westbound to cross a trough of low pressure (trowal), temperature initially increases before starting to decrease.

Wind Gradients and Pressure Systems

Under the same air pressure gradient, winds are stronger in high-pressure systems compared to low-pressure systems.

Saturated Air Dynamics

In saturated air, when cooled, condensation occurs; the dew point decreases as a result.

Subiding Air and Condensation

When air that is initially saturated begins to subside, condensation is the primary initial change.

MLAT Definition

MLAT stands for Multilateration, a method involving the use of transponder signals for aircraft location determination.

Isotach Functionality

The line of dashes that appears on upper weather charts represents isotachs, indicating areas of equal wind speed.

Test your knowledge on key aviation concepts including cloud formations and navigation parameters. This quiz covers topics such as density altitude, IAS, T/O distances, and NOTAM regulations. Perfect for aspiring pilots and aviation enthusiasts!