Halifax International Airport is the busiest airport in the Moncton FIR. It is located approximately 17NM northeast of the city for which it is named, a place with a population of about 300,000, making it the biggest city in the region, too. Built on the crest of a low hill, just east of Grand Lake, the airport has a tendency to attract a lot of fog. Thick fog. Hence, the Category II ILS approach system installed on the longest runway, 05/23. The runways are aligned at 90 degrees to each other and there are plenty of taxiways, giving ATC great flexibility and pilots a good choice of runways to use to get them on course faster. And both groups use this to their advantage. Halifax is well known on the eastern seaboard as the "Beehive", routinely using their airspace and pavement to maximum benefit. Simultaneous Intersecting Runway Operations(AKA Land And Hold Short) are in effect here whenever conditions permit. Take note of the distance table near the bottom of the airport diagram below -- you may be asked if you can do it sometime. Halifax is also known as a good IFR training airport. Lots of aircraft do practice approaches here, including Canadian Armed Forces CP-140 Auroras and CT-133 Silver Stars(as long as they last) from Greenwood, and CH-124 Sea Kings from Shearwater as they do "round robin" flights to many of the maritime airports.

The airspace around the airport consists of a Class D control zone (7NM radius, capped at 3,500 ASL), and outside of that is also Class D airspace. This means that you require a transponder to operate in it, even if you're VFR, but VFR aircraft need to establish communication prior to entering.
 

Airport Frequencies: ATIS  121.0 Halifax Clearance Delivery (CYHZ_DEL) 123.95 Halifax Ground (CYHZ_GND) 121.9 Halifax Tower (CYHZ_TWR) 118.4 Halifax Terminal (CYHZ_APP) 119.2 Moncton Center (CZQM_CTR) 132.2 RNAV STARs: FUNDY6 MAHONE5 LISCOMB6 Approaches available: Localizer Back-Course or NDB RWY 05 (GPS) Localizer Back-Course RWY 32 ILS RWY 14 ILS or NDB RWY 23(GPS) ILS Category II RWY 23 Copter VOR/DME 305° Standard Instrument Departure: Halifax Three Departure CYHZ3 Miscellaneous: Parking Area Chart Navaids: YHZ Halifax VOR 115.1 DME ch 98 ZNS Bluenose NDB (FAF 5.7 NM RWY24) 385 ZHZ Split Crow NDB (FAF 4.8 NM RWY06) 364 IJG ILS RWY 23 109.9 IHZ ILS RWY 14 109.1 DME ch 28 *Note: Idents of the NDBs will show old names in Flight Sim, and there is a real world localizer front course (no glidepath) on 05, but this is not yet reflected in Flight Sim. The ident is IGX and frequency 109.9, the same as on Runway 23.