AIC 41.5/41.6/41.8

Question 1

Frequency Allocation Within the VHF Band

To ensure a safe, orderly and expeditious flow of air traffic there appears to be no alternative to making it mandatory for all aircraft operating in a given controlled or advisory airspace to be equipped with radio communication equipment capable of transmitting and receiving on all of the -

In view of the above aircraft operating in South African airspace must be equipped with VHF radio communication equipment capable of operating on any __ kHz channel in the band ___,000 MHz to ___,975 MHz as from 01 January 2005.

Answer 1

VHF channels allocated to such airspace.

In view of the above aircraft operating in South African airspace must be equipped with VHF radio communication equipment capable of operating on any 25 kHz channel in the band 118,000 MHz to 136,975 MHz as from 01 January 2005.

Question 2

AIC 41.8

SEARCH AN RESCUE: SPACE SYSTEM FOR SEARCH OF VESSELS IN DISTRESS (COSPAS) SEARCH AND RESCUE SATELLITE AIDED TRACKING (SARSAT0:

1. The COSPAS-SARSAT system is a satellite aided Search and Rescue system designated to locate distress beacons transmitting on the frequencies -
2. There are at present three (3) types of satellite beacons, namely Emergency Locator Transmitter, ELT’s (airborne), Emergency Position Indicating Radio Beacon, EPIRB’s (maritime) and Personal Locator Beacon, PLB’s (land). These beacons transmit signals that are detected by the COSPAS-SARSAT polar- orbiting ________ equipped with suitable receivers/processors. The signals are then relayed to a ground receiving station, called a Local User Terminal (LUT), which processes the signals to determine the beacon location. An ____ is relayed, together with location data and other information, via a Mission Control Centre (MCC), either to a national Rescue Co-ordination Centre (RCC), or to the appropriate Search and Rescue Authority to initiate Search and Rescue activities.

Answer 2

121,5 or 406

2. There are at present three (3) types of satellite beacons, namely Emergency Locator Transmitter, ELT’s (airborne), Emergency Position Indicating Radio Beacon, EPIRB’s (maritime) and Personal Locator Beacon, PLB’s (land). These beacons transmit signals that are detected by the COSPAS-SARSAT polar- orbiting satellites equipped with suitable receivers/processors. The signals are then relayed to a ground receiving station, called a Local User Terminal (LUT), which processes the signals to determine the beacon location. An alert is relayed, together with location data and other information, via a Mission Control Centre (MCC), either to a national Rescue Co-ordination Centre (RCC), or to the appropriate Search and Rescue Authority to initiate Search and Rescue activities.

Question 3

AIC 41.6

Phraseology for ACAS events:

1. When a flight crew receives an ACAS RA to either ____ or _______ from their assigned altitude, or the RA otherwise affects their ATC clearance or their pending manoeuvre or manoeuvre in progress, the crew should _____ ATC when beginning the excursion from clearance or as soon as workload allows in the following manner:
   “XYX Centre, (Aircraft ID), ACAS ____/_______”
   EXAMPLE:
   “Johannesburg Control, SAA 377, ACAS Climb.” “Cape Town Control, KL 521, ACAS Descend.”
2. When the RA is _____, the flight crew should advise ATC that they are returning to their previously assigned clearance or subsequent amended clearance in the following manner:
   “XYZ Centre, (Aircraft ID), _____ of ______, returning to assigned altitude (FL nn or nn nnn feet).”
   EXAMPLE:
   “Johannesburg Control, SAA 377, Clear of conflict, returning to assigned altitude of FL 310.”

Answer 3

When a flight crew receives an ACAS RA to either climb or descend from their assigned altitude, or the RA otherwise affects their ATC clearance or their pending manoeuvre or manoeuvre in progress, the crew should inform ATC when beginning the excursion from clearance or as soon as workload allows in the following manner:
“XYX Centre, (Aircraft ID), ACAS Climb/Descend”
EXAMPLE:
“Johannesburg Control, SAA 377, ACAS Climb.” “Cape Town Control, KL 521, ACAS Descend.”

2. When the RA is clear, the flight crew should advise ATC that they are returning to their previously assigned clearance or subsequent amended clearance in the following manner:
   “XYZ Centre, (Aircraft ID), clear of conflict, returning to assigned altitude (FL nn or nn nnn feet).”
   EXAMPLE:
   “Johannesburg Control, SAA 377, Clear of conflict, returning to assigned altitude of FL 310.”