ABES Flashcards
What are symptoms of an emergency situation or unlawful interference?
- Radio contact not established at the time it is expected to be established
- Radio contact lost
- Pilot reports a malfunction of aircraft or unusual behavior of person on board
- Erratic behaviour of an aircraft or position symbol
- Aircraft Overdue at aerodrome
- Pilot reports the aircraft is short of fuel
If a pilot indicates an emergency situation, what should a controller do?
Ask if the pilot wishes to declare an emergency, and if not specified, the class of emergency being declared
What is ‘Distress’?
The condition of being threatened by serious and/or imminent danger and requiring immediate assistance
What is ‘Urgency’?
A condition concerning the safety of an aircraft or other vehicle, or of some person on board or within sight, but does not require immediate assistance
What should a Distress message start with?
Mayday, Mayday, Mayday
What should an urgency message start with?
Pan pan, Pan pan, Pan pan
What information should be contained with an emergency message?
- Class of emergency (Distress or Urgency)
- Identification of the aircraft
- Nature of the emergency
- Intentions - position, level, heading
- Qualifications of the pilot (Student, IMC, IR etc)
- As much information as time permits
If a pilot does not wish to declare an emergency, what may a controller do anyway?
Carry out the necessary actions as if a pilot had declared an emergency, if appropriate
What meaning does ‘Fuel emergency’ have?
None in the UK. No priority is required to be given unless an emergency is declared
What are the three main emergency transponder codes?
7700 - Aircraft emergency
7600 - Radio failure
7500 - Hijack or other act of violence
When should a controller retain control of an aircraft in an emergency?
If the controller can offer immediate assistance.
Other aircraft should be transferred to another frequency, or radio silence imposed, or the emergency aircraft may be transferred to another frequency
If a controller believes that another unit may be able to offer more assistance, what should they do?
- Consult the ACC supervisor and transfer according to their instructions
- Alert the nearest suitable unit and transfer the aircraft to a common frequency, giving assistance as required
What are the terms ‘Executive Control’ and ‘Operational Control’?
Terms used by D&D wrt aircraft in an emergency. D&D may delegate operational control, but will retain executive control
What limitations to D&D have?
- May have poor low level coverage, may require to initiate early/high handovers
- Little or no local knowledge, including of MSA
- Poor low level RTF coverage. Relays may be required
What should a controller do if they intercept a message from an aircraft that indicates that it is in an emergency?
- If possible, obtain a VDF bearing and pass it to the station being called.
- Continue to listen out until the aircraft is in 2-way comms with intended unit
- If it appears that the message isn’t being responded to, forward the message to the unit or the ACC supervisor, attempting to establish 2-way comms with the aircraft, give any assistance possible to the aircraft
In the event of a forced landing, who should a controller contact?
- ACC supervisor to notify local emergency services, even if the aircraft is within the radius of responsibility of Aerodrome Fire Service.
What are the actions a controller should take to assist a pilot in an emergency? (not exhaustive, nor in priority order)
- Inform emergency services
- Advise of nearest suitable aerodrome (ACC supervisor can assist). Notify that aerodrome and others on track.
- Plot position and subsequent track
- Ensure an uninterrupted approach
- Consider an emergency descent. Prompt to squawk 7700 if not doing so already. Aircraft may change heading without notice to enable. Controller should ensure separation where able and issue traffic information as appropriate. Emergency broadcast message: “ Attention all aircraft in the vicinity of (airfield), emergency descent in progress from FLXX to FL XX, standby for instructions”.
- Inform ACC supervisor
- Separate/ inform other aircraft
- Inform aircraft operator. The operator may request the aircraft divert to another aerodrome.
- Be aware of the boundaries of major towns and cities, associated handling difficulties and maneuvering limitations
- Be aware of possible dangerous goods. Inform ATSU of intended landing immediately, AFS and Aerodrome operator. If military, call D&D.
What are the rules regarding fuel jettisoning?
- Decision rests solely with pilot
- Recommended above 10,000ft AGL.
- If not possible above 10,000ft or over water, 7000ft in winter or 4000ft in summer.
- Maintain at least 1000ft vertical separation between aircraft
- Adjacent ATSUs informed.
What considerations should there be for an emergency overweight landing?
- May affect rate of descent on approach.
- Additional braking may be required (possible risk of hot brakes/wheel fire)
- Likely full length of rwy required
What phrase would be used by a pilot deplying a Ballistic recovery system?
“Ballistic recovery system deployed”
To be treated similar to engine failure/forced landing. If a recovery system has activated but failed to operate, RFFS/emergency services to be informed.
What is a strayed aircraft?
An aircraft which has deviated significantly from its intended track or which reports that it is lost
What is an unidentified aircraft?
An aircraft which has been observed or reported to be operating in a given area but whose identity has not bee established.
What actions should a controller take in the event of becoming aware of a strayed aircraft?
- Attempt to establish 2-way communications, and inform the pilot of his position
- Inform other ATS units into whose area the aircraft has strayed or may stray
- Request assistance from D&D, other ATS units or other aircraft in establishing communication
- Notify the ACC supervisor in the event of unlawful interference
What should a controller do if a pilot reports they are lost?
- Treat estimated position reports with caution
Use ATS surveillance equipment and VDF to attempt to locate the aircraft - Advise to climb if comms are poor or aircraft flying at low level and aircraft suspected below surveillance coverage. Take into account flight conditions, terrain, airspace. If unable to climb, warn of potential hazards in area
- request assistance from other ATS units in determining the aircraft position, inc VDF bearings
- Inform D&D
- Notify ACC supervisor
What should a controller do if becoming aware of an unidentified aircraft in the airspace which they are responsible for?
- Attempt to establish the identity of the aircraft
- Attempt to establish 2-way communication
- Inform D&D and any other affected ATS units/neighbouring FIRs. Get their assistance in identity and 2-way communication
- Notify the ACC supervisor in the event of unlawful interference
- If possible, obtain information from other aircraft in the area
- If identity ascertained, inform units consulted in the tracing
- Complete MOR
What should be taken into account when deciding whether to take overdue action?
- Type of aircraft
- Route - mountainous country, water etc
- Weather
Overdue Action - Non radio Aircraft
Preliminary Action
NLT 30 MINUTES AFTER ETA
- Check flight plan for obvious errors
- Check operating company/representative
- Confirm ATD
- Inform ACC supervisor
- Check with alternates
- Send RQS message
- Check with likely aerodromes on or adjacent to proposed route
Overdue Action - Non radio Aircraft
Full Overdue Action
NLT 60 MINUTES AFTER ETA
- Notify ACC that aircraft is fully overdue
- Continue endeavours to trace aircraft. Notify local police if assumed to have made a forced landing
Overdue Action - Radio-equipped Aircraft
Preliminary Action
NLT 30 minutes after estimated time for reporting point
- Advise ACC supervisor
- Confirm ATD
- Ensure RQS message sent
Overdue Action - Radio-equipped Aircraft
Full Overdue Action
If no news is received, or 1 hour has passed after reporting point, or fuel is considered to be exhausted, inform ACC supervisor that the aircraft is fully overdue
State controllers actions if an aircraft, which has been cleared to commence approach, fails to land within 5 minutes of the estimated time of landing and communication cannot be established
- ADI alert Approach radar
- Request aircraft flying in the vicinity to keep a look out
- Exercise caution when authorising movement of aerodrome traffic
- Alert emergency services
- Check with other aerodromes in the vicinity
- Send RQS message
- ADvise the ACC supervisor
Occasions to adopt radio failure procedures
- Aircraft observed to have selected 7600 and does not respond to ATC communication
- Communication cannot be maintained with aircraft being provided with ATC service
- Communication can’t be established with aircraft operating, or intending to operate, on an IFR flight plan within controlled airspace
Actions to take in event of radio failure:
- Maintain separation between radio failure aircraft and other known traffic
- Give pertinent information about the radio failure aircraft to other aircraft in the vicinity
- Ask aircraft in the vicinity to establish communication and relay messages
- Use all means possible to monitor aircraft progress
- Attempt to relay information using ACARS/datalink
- Transmit:
a. Level, route and EAT or ETA to which the radio failure aircraft is assumed to be adhering
b. Weather conditions at the destination aerodrome, a suitable alternate. - Transmit any instructions from the operator to divert, inform the alternate aerodrome
- Commence overdue action if necessary
How many a surveillance unit establish that a radio failure aircraft is able to receive instructions?
PSR - instructing aircraft to make a turn. A positive movement indicates the aircraft receiver is working.
SSR - Ident or SPI feature
What should a pilot of a VFR flight experiencing communication failure do?
- Select 7600
- Land at the nearest suitable aerdrome
- Take account of visual landing aids, keep watching for any instructions issued by signals from the ground
- Report arrival to the ATC unit as soon as possible
- If unable to follow this procedure, adopt the IMC procedure
- Pilots in receipt of an ATC clearance may enter controlled airspace in accordance with instructions. If no clearance received, aircraft should not enter controlled airspace unless there is an overriding safety reason
What should a pilot of an IMC flight experiencing communication failure do initially, if not being vectored?
- Squawk 7600
- Starting when 7600 set, maintain the current speed and last assigned level/minimum safe altitude for 7 minutes
- If failure occurs when following a notified departure procedure SID/ clearance to climb, fly procedure iaw published details until last position, fix or waypoint. For any of the 7 minutes that remain, maintain current speed and last assigned level/MSA
- After 7 minutes has finished, adjust the speed and lecel iaw current flight plan and continue the flight until the appropriate designated landing aid at the destination aerodrome.
- Attempt to transmit position reports and altitude /level on appropriate frequency over routine reporting points
What should a pilot of an IMC flight experiencing communication failure do initially, if being vectored?
- Squawk 7600
- Continued iaw last acknowledge instructions for 3 minutes only, then proceed in the most direct manner possible to rejoin current flight planned route.
- Remain at or above MSA
- If being vectored on final approach, comply with local published procedures
What should a pilot of an IMC flight experiencing communication failure do after initial procedures?
- Arrange flight to arrive over appropriate designated landing aid at destination aerodrome as closely as possible to the last ETA acknowledged by ATC, or derived from last position report and flight planned times, at highest notified MSA.
- If following a STAR, after the 7 minutes is completed, follow descent as close as possible to published profile, or at the minimum published level at IAF if no published procedure
What should a pilot of an IMC flight experiencing communication failure do once reaching landing aid at destination aerodrome?
- Begin further descent at last acknowledged EAT or ETA, or as close as possible to this time. If necesary, remain in holding pattern until minimum holding level, descending at not less than 500fpm
- If ‘delay not determined’ given, do not attempt to land and divert to alternate
- Carry out notified instrument approach procedure and land within 30 mins of EAT or calculated ETA
- Take into account visual landing aids and signals
What should a pilot of a Special VFR flight experiencing communication failure do?
- Squawk 7600
If transmitter believed to be functioning, transmit blind position reports and intentions - Remain clear if not entered CTR, even if clearance obtained
- If have already entered CTR, proceed iaw clearance and land asap. Watch for visual signs in circuit.
- If transiting, leave by the most direct route
When shall radio failure procedures cease to be actioned?
If alternative action can be taken or normal operations resumed without impairing safety, or the aircraft has landed.
A controller who re-establishes communication with an aircraft must inform the unit at
which the radio failure procedure was initiated and provide it with information required for
further control of aircraft.
When can levels previously occupied by radio failure aircraft be re-allocated to subsequent aircraft?
15 minutes after the latest time they should have been vacated, except the lowest level at the stack and the level at which the radio failure aircraft is expected to leave the vicinity, which should be kept clear for 30 minutes, plus appropriate time to allow the aircraft to depart the vicinity.
After 30 minutes, pertinent information should be given to the operators of other aircraft who are to determine whether to resume normal operations.
5 examples of unlawful operation of aircraft in UK airspace
1 - Hijacking
2 - Unauthorised removal of aircraft
3 - Flight with intent to defect
4 - Use of an aircraft to effect the escape of prisoners or special hospital patients
5 - Use of an aircraft for the furtherance of crime, including terrorism
What is the policy within UK airspace for hijacked aircraft to do?
Land as soon as possible
Who will act as the ATC co-ordinating authority for hijacked aircraft?
ACC Watch Supervisor, until assumed by UK Air Defence Authority
Who has overall responsibility for hijacking incident?
DfT or MOD and the ATC Co-ordinating authority.
What priority should a controller give to a hijacked aircraft?
High - attend promptly to requests, expedite all phases of flight (especially safe landing).
What should the controller of a hijacked aircraft avoid in air-ground communications?
Referencing to an incident or hijack, unless the aircraft has referred to it first and it can be assumed it will not aggravate the situation
Where should a hijacked aircraft be directed to once landed?
A designated isolated parking position iaw local instructions, or within area selected by the aerodrome operator. The taxi route should be specified, to minimise security risk to the public, other aircraft and other installations.
What phrase should a controller use if an aircraft is seen to be squawking 7500?
“callsign, confirm you are squawking assigned code (code assigned by ATC that it would otherwise be squawking)”
Avoid specific mention of 7500
If the Government decides to withhold an ATC clearance to an aircraft, how should the message be passed to the aircraft?
Verbatim.
Make provision for normal separation should the aircraft ignore lack of clearance.
Other than squwking 7500, how else may a hijacked/renegade aircraft be suspected/identified?
- Unauthorised deviation from flight plan
- Refusal or inability to comply with ATC instructions with no good reason
- Loss of RTF contact
- Unauthorised SSR code changes/extended use of IDENT
- Use of non-standard phraseology by the crew or covert attempt to highlight situation
- Selection of 7600 or 7700 with flight profile deviation
- Notification from other sources e.g. media
- Open RTF transmission from cockpit
- Non-ATC related RTF transmissions
- Non-specific threat passed from third party