Designated Airspace Handbook - Nav Canada

© 2013 Her Majesty the Queen in Right of Canada Source of Canadian Airspace Data © 2013 Transport Canada
GLOSSARY OF AERONAUTICAL TERMS AND
DESIGNATIONS OF MISCELLANEOUS AIRSPACE
1. The primary route width is 10 miles on each side of the centre line prescribed for such a route.
2. The primary route boundary lines do not splay.
MILITARY OPERATIONS AREA:
Airspace of defined dimensions established to segregate certain military activities from IFR traffic and to identify for
VFR traffic where these activities are conducted.
MILITARY TERMINAL CONTROL AREA:
Controlled airspace of defined dimensions normally established in the vicinity of a military aerodrome and within
which special procedures and exemptions exist for military aircraft. The terminology "Class B, C, D or E equivalent"
used for the designations of MTCAs describes the equivalent level of service and operating rules for civilian aircraft
operating within the MTCA and under military control.
MINIMUM ENROUTE ALTITUDE:
The published altitude above sea level between specified fixes on airways or air routes which assures acceptable
navigational signal coverage, and which meets the IFR obstruction clearance requirements.
MINIMUM OBSTRUCTION CLEARANCE ALTITUDE:
The published altitude above sea level between specified fixes on airways or air routes which meets the IFR
obstruction clearance requirements for the route segment.
MINIMUM RECEPTION ALTITUDE:
Minimum reception altitude when applied to a specific VHF/UHF intersection, is the lowest altitude above sea level
at which acceptable navigational signal coverage is received to determine the intersection.
MOUNTAINOUS REGIONS (See map page M4):
An area of defined lateral dimensions above which special rules concerning minimum enroute altitudes apply.
NORTHERN CONTROL AREA (See map page M2):
Controlled airspace within the NDA from FL230 south of a line beginning at:
N72°00'00.00" W129°00'00.00" thence easterly along latitude N72°00'00.00" \ to
N72°00'00.00" W092°05'00.00" to
N73°56'39.00" W070°24'58.00"
NORTHERN DOMESTIC AIRSPACE (See map page M1):
All airspace within the CDA north of a line beginning at:
N69°00'00.00" W141°00'00.00" to
N72°00'00.00" W129°00'00.00" to
N67°40'22.00" W129°29'34.00" to
N63°11'21.00" W115°19'22.00" thence clockwise along the arc of a circle of
50 miles radius centred on
N62°27'52.00" W114°26'12.00" (Yellowknife, NT - VOR) \ to
N62°10'55.00" W112°45'20.00" to
N59°00'30.00" W095 29'15.00" thence clockwise along the arc of a circle of
50 miles radius centred on
N58°45'45.00" W093°57'14.00" (Churchill, MB - NDB) \ to
N58°46'00.00" W092°21'00.00" to
N62°06'47.00" W079°11'59.00" thence clockwise along the arc of a circle of
40 miles radius centred on
N62°24'49.00" W077°55'38.00" (Ivujivik, QC - NDB) \ to
N62°34'13.00" W076°31'52.00" to
N63°26'30.00" W069°53'30.00" thence clockwise along the arc of a circle of
40 miles radius centred on
N63°44'00.00" W068°32'53.00" (Frobay, NU - NDB) \ to
N64°14'23.00" W067°34'28.00" to
N67°31'57.00" W060°18'13.00"
12
DAH December 5, 2012 10:55 am
DESIGNATED AIRSPACE HANDBOOK
Effective 0901Z 10 JANUARY 2013 to 0901Z 7 MARCH 2013