Aviation Instruments and Altimetry

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Questions and Answers

What is the primary function of an Electronic Flight Display (EFD) in an aircraft?

Compensate for an airman's lack of skill or knowledge

Provide additional navigation systems

Offer new capabilities and simplify basic flying tasks (correct)

Enhance communication between pilots and air traffic control

What does the V-speed VFE represent?

Maximum flap retraction speed

Stall speed or minimum steady flight speed in the landing configuration

Minimum takeoff safety speed

Maximum flap extended speed (correct)

Why does a magnetic compass initially turn towards the east in the Northern Hemisphere?

When an aircraft is decelerated while on a north heading

When an aircraft is accelerated while on a south heading (correct)

During a left turn from a north heading (correct)

When an aircraft is on a west heading

What airspeed should a pilot use to gain the most altitude in a given period of time?

Vy Signup and view all the answers

What causes deviation in a magnetic compass?

Magnetic fields within the aircraft distorting the lines of magnetic force Signup and view all the answers

How do variations in temperature affect the altimeter?

Pressure levels are raised on warm days and the indicated altitude is lower than true altitude Signup and view all the answers

When are the indications of a magnetic compass accurate?

Only in straight-and-level unaccelerated flight Signup and view all the answers

What is Vso defined as?

Stalling speed or minimum steady flight speed in the landing configuration Signup and view all the answers

What instrument provides impact pressure sometimes called RAM pressure?

Airspeed Indicator Signup and view all the answers

What is the approximate change in indication on the altimeter if the pressure changes from 29.15 to 29.85?

700 FT Signup and view all the answers

If the pitot tube and outside air static vents become clogged, which instruments would be affected?

The altimeter, airspeed indicator, and vertical speed indicator Signup and view all the answers

In the Northern Hemisphere, if an aircraft is accelerated or decelerated, the magnetic compass will normally indicate

A TURN MOMENTARILY Signup and view all the answers

What is a benefit of flying with a glass flight deck?

SITUATIONAL AWARENESS IS INCREASED Signup and view all the answers

What should be the indication on the magnetic compass as you roll into a standard rate turn to the right from a south heading in the Northern Hemisphere?

THE COMPASS WILL REMAIN ON SOUTH FOR A SHORT TIME, THEN GRADUALLY CATCH UP TO THE MAGNETIC HEADING OF THE AIRPLANE Signup and view all the answers

The angular difference between true north and magnetic north is

MAGNETIC VARIATION Signup and view all the answers

What would happen to the altimeter if we don't reset it after a pressure change?

The altimeter would show an incorrect reading Signup and view all the answers

Study Notes

Altimeter Changes

A 0.7 inch change in pressure is equivalent to a 700 FT change in altitude
If the altimeter setting is changed from 29.15 to 29.85, the indication would increase by 700 FT
If the altimeter setting is changed from 30.11 to 29.96, the indication would decrease by 150 FT

Pitot System

Provides impact pressure, also known as RAM pressure
The airspeed indicator is the instrument that uses this pressure

Instrument Effects

If the pitot tube and outside air static vents become clogged, the following instruments would be affected:
- Altimeter
- Airspeed indicator
- Vertical speed indicator

Magnetic Compass

In the Northern Hemisphere, the magnetic compass will normally indicate a turn toward the south when:
- Accelerated or decelerated
- Entering a left turn from an east heading
- Decelerated while on a west heading
In the Northern Hemisphere, when rolling into a standard rate turn to the right from a south heading, the magnetic compass will initially indicate a turn to the left
Deviation in a magnetic compass is caused by the difference in location between true north and magnetic north, and magnetic fields within the aircraft distorting the lines of magnetic force

Flight Deck and Instruments

A benefit of flying with a glass flight deck is that situational awareness is increased
An aircraft equipped with an Electronic Flight Display (EFD) can offer new capabilities and simplify basic flying tasks
VFE represents maximum flap extended speed
VY is the airspeed at which the pilot can gain the most altitude in a given period of time

Aircraft Performance

Vso is defined as the stalling speed or minimum steady flight speed in a specified configuration

Temperature Effects

Variations in temperature affect the altimeter, with higher temperatures expanding pressure levels and the indicated altitude being higher than true altitude, and lower temperatures lowering pressure levels and the indicated altitude being lower than true altitude

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Description

Quiz about aviation instruments, altimeter settings and their effects on flight readings. Covers calculations and identification of instruments.