Instrument Approach Procedures and Navigation Systems Quiz

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Questions and Answers

Which term refers to the elevation of the highest point of the landing area?

Alternate aerodrome

Airborne collision avoidance system (ACAS)

Altitude

Aerodrome elevation (correct)

What is the purpose of an Airborne collision avoidance system (ACAS)?

To serve as an alternate aerodrome

To measure the vertical distance from mean sea level

To provide advice to the pilot on potential conflicting aircraft (correct)

To operate independently of ground-based equipment

What is an alternate aerodrome?

An aerodrome at which an aircraft would be able to land should it become impossible to land at the aerodrome of intended landing

An aerodrome at which an aircraft would be able to land in the event of a diversion while en route

An aerodrome at which an aircraft would be able to land shortly after take-off

An aerodrome to which an aircraft may proceed when it becomes either impossible or inadvisable to proceed to or to land at the aerodrome of intended landing (correct)

Which one of these is a defined instrument flight rule (IFR) departure route?

Standard instrument departure (SID) Signup and view all the answers

Which one of these is the lowest altitude that will provide a minimum clearance of 300 m (1 000 ft) above all objects located in an arc of a circle defined by a 46 km (25 NM) radius?

Terminal arrival altitude (TAA) Signup and view all the answers

Which one of these is the beginning of that portion of the runway usable for landing?

Threshold (THR) Signup and view all the answers

Which one of these is a specified geographical location used to define an area navigation route or the flight path of an aircraft employing area navigation?

Waypoint Signup and view all the answers

Which term refers to a technique for flying the final approach segment of a non-precision instrument approach procedure as a continuous descent, without level-off, from an altitude/height at or above the final approach fix altitude/height to a point approximately 15 m (50 ft) above the landing runway threshold or the point where the flare manoeuvre should begin for the type of aircraft flown?

Continuous descent final approach (CDFA) Signup and view all the answers

What is the term for an airspace of defined dimensions within which air traffic control service is provided in accordance with the airspace classification?

Controlled airspace Signup and view all the answers

What is the term for the estimating or determining of position by advancing an earlier known position by the application of direction, time and speed data?

Dead reckoning (DR) navigation Signup and view all the answers

What is the term for a specified altitude or height in a 3D instrument approach operation at which a missed approach must be initiated if the required visual reference to continue the approach has not been established?

Decision altitude (DA) or decision height (DH) Signup and view all the answers

Which type of approach procedures are designed for 3D instrument approach operations Type A or B?

SBAS CAT I Signup and view all the answers

What is the purpose of an intermediate fix (IF) in RNAV applications?

To define a fly-by waypoint Signup and view all the answers

What is the minimum altitude for a defined segment that provides the required obstacle clearance?

Minimum obstacle clearance altitude (MOCA) Signup and view all the answers

What is the lowest altitude which may be used which will provide a minimum clearance of 300 m (1 000 ft) above all objects located in an area contained within a sector of a circle of 46 km (25 NM) radius?

Minimum sector altitude (MSA) Signup and view all the answers

Which of the following is the definition of obstacle clearance altitude (OCA)?

The lowest altitude above mean sea level used in determining obstacle clearance compliance. Signup and view all the answers

What is the purpose of an obstacle assessment surface (OAS)?

To determine the obstacles to be considered in the calculation of obstacle clearance altitude for an ILS facility. Signup and view all the answers

What is the airspace above the inner approach surface, inner transitional surfaces, and balked landing surface called?

Obstacle free zone (OFZ) Signup and view all the answers

What is a point-in-space (PinS) approach?

An approach procedure designed for helicopters only that includes both a visual and an instrument segment. Signup and view all the answers

Which of the following is the correct definition of height?

The vertical distance of a level, a point or an object considered as a point, measured from a specified datum. Signup and view all the answers

What is the purpose of a holding procedure?

To keep an aircraft within a specified airspace while awaiting further clearance. Signup and view all the answers

What is the difference between a non-precision approach (NPA) procedure and an approach procedure with vertical guidance (APV)?

NPA procedures provide lateral and vertical navigation guidance, while APV procedures provide only lateral navigation guidance. Signup and view all the answers

Study Notes

Aviation Terminology

The term "Threshold Elevation" refers to the elevation of the highest point of the landing area.
The purpose of an Airborne Collision Avoidance System (ACAS) is to provide alerts and instructions to pilots to avoid potential collisions with other aircraft.

Aerodromes

An alternate aerodrome is a designated airport that an aircraft can divert to in case of an emergency or other unforeseen circumstances.

Departure Routes

A Standard Instrument Departure (SID) is a defined instrument flight rule (IFR) departure route.

Altitudes

The Minimum Obstacle Clearance Altitude (MOCA) is the lowest altitude that will provide a minimum clearance of 300 m (1,000 ft) above all objects located in an arc of a circle defined by a 46 km (25 NM) radius.
The Decision Altitude (DA) or Decision Height (DH) is the lowest altitude above which a missed approach must be initiated if the required visual reference to continue the approach has not been established.

Runway Operations

The Threshold is the beginning of that portion of the runway usable for landing.

A Waypoint is a specified geographical location used to define an area navigation route or the flight path of an aircraft employing area navigation.
Dead Reckoning is a technique for estimating or determining position by advancing an earlier known position by the application of direction, time, and speed data.

Airspace

An Air Traffic Control Zone is an airspace of defined dimensions within which air traffic control service is provided in accordance with the airspace classification.

Approach Procedures

Continuous Descent Final Approach (CDFA) is a technique for flying the final approach segment of a non-precision instrument approach procedure as a continuous descent, without level-off, from an altitude/height at or above the final approach fix altitude/height to a point approximately 15 m (50 ft) above the landing runway threshold or the point where the flare maneuver should begin for the type of aircraft flown.
Type A instrument approach procedures are designed for 3D instrument approach operations.
The purpose of an intermediate fix (IF) in RNAV applications is to provide a checkpoint for ensuring the aircraft is on the correct course.

Obstacles

Obstacle Clearance Altitude (OCA) is the minimum altitude for a defined segment that provides the required obstacle clearance.
The purpose of an obstacle assessment surface (OAS) is to evaluate the terrain and obstacles in the vicinity of an aerodrome to ensure safe aircraft operations.

Holding Procedures

The purpose of a holding procedure is to delay an aircraft in flight, typically in a designated holding area, to ensure safe separation from other aircraft.

Approach Types

A Non-Precision Approach (NPA) procedure is an approach that does not provide vertical guidance to the pilot, whereas an Approach Procedure with Vertical Guidance (APV) provides both lateral and vertical guidance to the pilot.

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Description

Test your knowledge on instrument approach procedures and navigation systems with this quiz. Learn about ILS, MLS, GLS, and SBAS CAT I and their use in 3D instrument approach operations. Explore the intermediate approach segment and enhance your understanding of instrument approach procedures.