In the event of communication failure:
- maintain terrain clearance throughout all procedures and
- squawk 7600 if in CTA or a restricted area.
Indications by an aircraft ERSA EMERG:
- during the hours of daylight—by rocking the aircraft wings and
This signal should not be expected on the base and final legs of the approach.
- during the hours of darkness—by flashing the aircraft’s landing lights on and off twice or, by switching its navigation lights on and off twice, .
On the ground:
- during the hours of daylight—by moving aircraft’s ailerons or rudder; and
- during the hours of darkness—by flashing the aircraft’s landing lights on and off twice or, by switching its navigation lights on and off twice.
If VFR in Class G airspace ERSA EMERG:
- stay in VMC
- broadcast intentions (assume transmitter is operating and prefix calls with ‘Transmitting blind’);
- remain VFR in Class G and land at the nearest suitable location and
- report arrival to ATS if on SARTIME or reporting schedules (see telephone number below).
t: 1800 815 257
If in controlled/restricted airspace ERSA EMERG
- squawk 7600 if transponder equipped. Listen out on ATIS and/or voice modulated NAVAIDS and
- transmit intentions and make normal position reports (assume transmitter is operating and prefix calls with ‘Transmitting blind’) then
If in VMC and certain of maintaining VMC:
- stay in VMC and land at the most suitable aerodrome (note special procedures if proceeding to a Class D aerodrome) and
- report arrival to ATS.
- Initial and subsequent actions by the pilot at the time of loss of communications will depend largely on the pilot’s knowledge of the destination aids, the air traffic/air space situation and meteorological conditions en route and at the destination. It is not possible to publish procedures that cover all radio failure circumstances. The following procedures ensure that air traffic services and other traffic should be aware of the pilot’s most likely actions. Pilots should follow these procedures unless strong reasons dictate otherwise.
- In determining the final level to which a pilot will climb after radio failure, ATC will use the level provided on the flight notification, or the last level requested by the pilot and acknowledged by ATC.
If no clearance limit received and acknowledged:
- proceed in accordance with the latest ATC route clearance acknowledged and climb to planned level or
If a clearance limit involving an altitude or route restriction has been received and acknowledged:
- maintain last assigned level (or minimum safe altitude if higher), for three minutes and/or
- hold at nominated location for three minutes then
- proceed in accordance with the latest ATC route clearance acknowledged, and climb to planned level.
If being radar vectored:
- climb if necessary to minimum safe altitude, to maintain terrain clearance and
- maintain last assigned vector for two minutes then
- proceed in accordance with the latest ATC route clearance acknowledged.
- fly one more complete holding pattern then
- proceed in accordance with the latest ATC clearance acknowledged.
If no NAVAID:
- track to the destination in accordance with the flight plan (amended by the latest ATC clearance acknowledged, if applicable)
- commence descent in accordance with standard operating procedures or flight plan
- proceed to overhead the aerodrome at that altitude
- ascertain landing direction
- descend to join desired circuit at circuit altitude via the downwind entry point (remain clear of other circuit)
- proceed with normal circuit and landing, maintaining separation from other aircraft
- watch tower for light signals (see page 5.27) (CAAP 166-1(3) para 6.11) or
If your aircraft is fitted with NAVAID:
- if possible, select the appropriate frequency and listen for instructions (generally speaking this is one of the most effective ways of proceeding safely)
- when the control tower is active, follow normal procedure
- watch tower for light signals (see page 5.27).
|On ground||Light mode||In flight|
|Authorised to take-off if pilot is satisfied that no collision risk exists||Green||Authorised to land if pilot is satisfied that no collision risk exists|
|Authorised to taxi if pilot is satisfied the no collision risk exists||Green flashing||Return for landing|
|Stop||Red||Give way to other aircraft Continue circling|
|Taxi clear of landing area In use||Red flashing||Do not land Aerodrome unsafe|
|Return to starting point on aerodrome||White flashing|
Communication and NAVAID failure
In the event of complete failure of communications and navigation aids, maintain terrain clearance throughout all procedures and proceed as follows:
If VFR in Class G airspace:
- stay in VMC
- broadcast intentions (assume transmitter is operating and prefix calls with ‘Transmitting blind’)
- remain VFR in Class G and land at the nearest suitable aerodrome;
- report arrival to ATS if on SARTIME or reporting schedules or
If in controlled/restricted airspace or if IFR in any airspace:
- squawk 7600 if possible
- listen out on ATIS and/ or voice-modulated NAVAIDS
- transmit intentions and normal position reports (assume transmitter is operating and prefix calls with ‘Transmitting blind’
- if practicable leave/avoid controlled/restricted airspace and areas of dense traffic
- as soon as possible establish visual navigation
- land at the nearest suitable aerodrome
- report to ATS on arrival.
Emergency change of level in controlled airspace procedures
When it is necessary for an aircraft in controlled airspace to make a rapid change of flight level or altitude because of technical trouble, severe weather conditions, or other reasons, the change will be made as follows, using urgency message format, stating level changes involved and diversions, if applicable.
Calls/actions when conducting emergency change of level:
- squawk SSR code 7700
‘Pan-Pan, Pan-Pan, Pan-Pan’
[agency being called]
[nature of urgency problem]
[intention of person in command]
[present position flight level or altitude and heading]
[any other useful information]