GPH 204

Question 1

Name the various classes of airspace in Canada and state their requirements.

Answer 1

Class A – Controlled airspace within which only IFR flights are permitted.
Class B – Controlled airspace within which IFR and CVFR flights are permitted.
Class C – Controlled airspace within which IFR and VFR flights are permitted. VFR – flights
require a clearance to enter.
Class D – Controlled airspace within which IFR and VFR flights are permitted. VFR flights – must
establish two way communication before entering.
Class E – Controlled airspace that does not meet the requirements of Class A, B, C or D. – IFR
and VFR are permitted.
Class F – Special Use
Class G – Uncontrolled

Question 2

Low Level Airways: What is the allowable deviation from an airway between VOR to VOR?

Answer 2

The basic VHF/UHF airway width is 4NM on each side of the centreline prescribed for such an airway.
Where applicable, the airway width shall be increased between the points where lines, diverging 4.5°
on each side of the centreline from the designated facility, intersect the basic width boundary; and
where they meet, similar lines projected from the adjacent facility.

Question 3

How to obtain SVFR?

Answer 3

This authorization is normally obtained through the local tower or FSS, and must be obtained before SVFR is attempted within a control zone. ATC will issue an SVFR authorization, traffic and weather conditions permitting, only upon a request for SVFR from a pilot.

Question 4

Within MTCA, are there any exceptions specific to heights above 12,500 ft ASL?

Answer 4

Although the airspace above 12,500 feet ASL within a Military Terminal Control Area consists of both
Class A and B equivalent airspace, military aircraft are normally exempt from the IFR/CVFR only
requirements and 1,000 on top prohibition.