Course 4 - Section 9 - From Minor Airport to Minor Airport

Question 1

“working single stand”

Answer 1

When ATS staff fulfill more than one role at a time

Question 2

When ATS services part time by ATC and part time by FSS at the same site

Answer 2

The same radio frequency is used, but the tower frequency is called the mandatory frequency (MF) when the tower is closed

Question 3

Frequencies used by flight service specialists (list)

Answer 3

Emergency frequencies (121.5 and 243.0 MHz)
Mandatory
Flight Information Service Enroute
General Broadcast
Ground

Aerodrome Traffic frequency is used by pilots, not FSS

Question 4

Mandatory Frequency

Answer 4

An FSS frequency

Mandatory frequency (MF) is a very high frequency (VHF) used by radio equipped aircraft operating within the a mandatory frequency area

When within the MF area, the pilot is required to be in radio contact with the appropriate flight service station

All flight service stations have MFs. Airports that have MFs have either an onsite flight service station or an offsite flight service station providing RAAS

MFs are used to provide advisory service including traffic updates and runway surface conditions

Question 5

Flight Information Services Enroute Frequency

Answer 5

An FSS frequency

Flight information services enroute (FISE), or enroute frequencies, are monitored by Flight information centres (FICs) to provide and receive information pertinent to aircraft in the enroute phase of flight

FISE frequencies are used for communicating information such as
- altimeter settings for the nearest station reporting point
-current weather in times of adverse weather conditions
-significant inflight weather
-Accepting IFR position reports
-providing limited airport advisory services
-opening and closing flight plans

Question 6

General Broadcast Frequency

Answer 6

126.7 MHz

The general broadcast frequency, 126.7 MHz, is intended for pilots to broadcast their position intentions in uncontrolled airspace

FICs do not monitor 126.7 MHz, but they do have broadcast capability on the frequency to broadcast urgent information

Radio phraseology for general broadcast: TRAFFIC, eg CHARLOTTETOWN TRAFFIC and position report

Question 7

Ground Frequency (FSS)

Answer 7

Flight service stations provide positive control of all vehicle traffic at their airport. Vehicle control service is provided on the ground frequency assigned to that particular flight service station

Question 8

Aerodrome Traffic Frequency

Answer 8

ATFs are used by pilots only and are not monitored by flight service stations

aerodrome traffic frequencies (ATFs) are normally designated for active uncontrolled aerodromes that do not meet the criteria to have a mandatory frequency assigned

An ATF is established to ensure that all radio-equipped aircraft operating on the ground or withing the area are listening on a common frequency and following common reporting procedures

In Canada, the ATF will normally by the frequency of the universal communications (UNICOM) facility where one exists or 123.2 MHz where a UNICOM does not exist

The designation of an ATF is not limited to aerodromes only. One may be designated for use in certain areas where VFR traffic is high and there is a benefit to safety to ensure that all traffic is monitoring the same frequency

Question 9

List the radio frequencies used by an example flight flying from one non-FSS airport to another non-FSS airport

Answer 9

1. FISE
   Aircraft contacts FIC to file a VFR flight plan. FIC process the flight plan and asks the pilot if they require any weather information
2. Aerodome Traffic Frequency
   Pilot contacts ATF frequency UNICOM upon departure
3. General Broadcast
   Aircraft broadcasts on 126.7MHz their position and intentions
4. Aerodrome Traffic Frequency
   Aircraft contacts ATF frequency UNICOM at arrival aerodrome to advise intention to land
5. FISE
   Aircraft contacts FIC to advise of arrival and to close VFR flight plan. FIC advises that flight plan is closed and that alerting services is terminated

Question 10

List the radio frequencies used by an example flight flying from one FSS airport to another FSS airport

Answer 10

1. FISE
   Aircraft contacts FIC to file a VFR flight plan. FIC process the flight plan and asks the pilot if they require any weather information. If VFR plan was previously filed, the aircraft can contact the FIC to ensure that it was recieved
2. Mandatory Frequency
   Aircraft contacts FSS via MF and requests flight plan be opened
3. FISE
   Aircraft contacts FIC for an update of weather conditions at arrival airport or at a upcoming fix enroute
4. Mandatory Frequency
   Before entering the MF area for arrival airport, aircraft contacts FSS for RAAS or AAS depending on circumstances
5. FISE
   Aircraft contacts FIC to advise of arrival and to close VFR flight plan. FIC advises that flight plan is closed and that alerting services is terminated