Aircraft Emergencies Flashcards
What is the definition of an emergency?
Any unusual occurrence that precludes a controller from handling the aircraft in the anticipated/normal manner.
What are ways that an ATCO can recognise an emergency situation?
Radio contact is not established at time expected
Radio contact is lost
Report from pilot or other pilots
Erratic behaviour observed
A/C overdue at destination aerodrome
Pilot reports short of fuel
Reports from unofficial third parties
Emergency Squawk
What are the Main Categories of ABES?
Radio Failure
Unlawful interference / Hijack
Bomb Threat
Strayed / Unidentified Aircraft
Aircraft unable to maintain height
Control difficulty which affects handling
Pilot unsure of position
Diversion
Non-specific
What are the general principles of emergencies?
Acknowledge the Mayday or Pan call
Ascertain type of emergency, intention of crew, position and level
Crash Alarm
Ask for Help
Alert Local Emergency Services
Get help of other ATSUs or D&D
Provide crew with any information ie. suitable aerodromes, minimum safe altitudes, weather etc
Avoid changes of frequency
Limit manoeuvres
Advise other aircraft in vicinity
Plot the emergency aircraft position
Ensure an uninterrupted approach
Try not to route emergency aircraft over densely populated areas
Consider all means at your disposal
Beware complacency in a familiar situation
Teamwork - don’t keep it to yourself
Once on the ground
Pass surface wind if aircraft on fire
Find out the reduced RFFS Category
Inform AAIB once initial actions are concluded
What are the 3 questions an ATCO should ask to determine how severe the emergency is?
- Are you able to maintain height?
- Can you affect a safe landing?
- Persons on board
What are factors to consider for an emergency straight after Take Off?
Crash alarm
Ask for Help
Category of Emergency
Runway inspection
Land ASAP or burn off fuel
Overweight landing?
Visual return or needs IAP?
Allow pilot to dictate runway and circuit direction
Deal with traffic accordingly (inform/separate)
Time available
Coordinate with other ATSUs
What factors are to be considered for an emergency overweight landing?
Aircraft should intercept final at or below the glide path
Likely that full runway will be utilised
Additional braking may be required, raising risk of wheel fires
What are factors to consider for an emergency on landing?
Crash alarm
Category of emergency
Ability to steer and stop - brakes, tyre burst, flaps hydraulics?
Evacuation of aircraft
Runway inspection
Removal of wreckage
What are factors to consider for an aircraft conducting a forced landing?
Persons on board
Advice on the local area
Inform local police and local fire service
Fix the position
Attempt to maintain two way contact - use relay if required
Advise Wind at airport
Notify SAR
Reassure
What are factors to consider for an emergency with handling difficulties?
What speed do they need?
What is their rate of Climb/Descent?
What is their ability to turn - preferred direction?
Can they steer and stop on landing?
What should you do if an aircraft is unable to maintain height and aircaft is beyond range?
Alert emergency services and use local knowledge of terrain to assist in selection of most suitable area for forced landing
What should you do if an aircraft is unable to maintain height but the aircaft is within range?
Advise shortest route to the aerodrome
If too high, advise to remain close to airfield and hold across final approach track
Monitor rate of descent by frequent checks from crew
What is an emergency descent and what are ATCOs to consider?
A manoeuvre initiated by flight crew to bring an aircraft to a safe level, in the minimum time, with the least possible passenger discomfort. Most frequently conducted by aircraft suffering loss of cabin pressure.
ATCOs must consider that the first indication may be an unexpected change in level. A single prompt to squawk 7700 is acceptable. ATCOs should state the minimum altitude to maintain terrain clearance and provide QNH.
What can potential emergencies be caused by?
Adverse weather
Crew inexperience
Crew Incapacitation
Medicals
Insecure cargo - affects centre of gravity
Technical Malfunction
Maintenance Errors
Foreign Object Debris
Terrorism
After an inspection flyby, what should the information passed to pilots be?
Advisory and not specific. “It appears that…”
What are a pilot’s order of priorities in an emergency?
Aviate
Navigate
Communicate
What is the NITS briefing?
Nature of Emergency
Intentions of Crew
Time Available
Special Instructions
What is TDODAR?
Time
Diagnose
Options
Decide
Allocate Tasks
Review
What is ASSISTS?
An ATCO “Asissts” a pilot during an emergency
Acknowledge
Separate
Silence
Inform
Support
Time
Squawk
What is STORCALE and when is it used?
Used for RT Fail
Separate
Transmit
Others (inform other a/c)
Request Assistance
Continue to Transmit
Alternates
Liaise
Emergency
How are distress messages prefixed?
MAYDAY MAYDAY MAYDAY
Describe the condition of distress
A condition of being threatened by serious and/or imminent danger and of requiring immediate assistance
How are urgency messages prefixed?
PAN PAN, PAN PAN, PAN PAN
Describe the condition of urgency
A condition concerning the safety of an aircraft or of some person on board or within sight, but which does not require immediate assistance
What will a distress/urgency message contain?
(1) MAYDAY, MAYDAY, MAYDAY or PAN PAN, PAN PAN, PAN PAN
(2) Name of the station addressed
(3) Identification of the aircraft
(4) Nature of the emergency
(5) Intention of the person in command
(6) Present position, level and heading
(7) Qualification of the pilot (urgency)
(8) As much other information as time permits
What should the ATCO do if the pilot gives information normally associated with an emergency message without prefixing either ‘MAYDAY’ or ‘PAN’?
ATCO will ask the pilot if they wish to declare an emergency. If the pilot declines to do so, the controller may carry out the necessary emergency actions anyway.
What are some visual signals to notify distress?
SOS with signalling apparatus
Firing red flares in short intervals
Red parachute flare
What are some visual signals notifying urgency?
Landing lights on/off repeatedly
Navigation lights on/off repeatedly
Succession of white pyrotechnic lights
Signal XXX with signalling apparatus
What are the emergency squawk codes?
7500 - Hijack/Unlawful Interference
7600 - Radio Tricks
7700 - Emergency
What is the phraseology to acknowledge an emergency call?
(Callsign), (ATSU Callsign), roger Mayday/Pan
What is the phraseology to impose silence during a Mayday?
All stations, (ATSU callsign), stop transmitting, Mayday
What is the phraseology to cancel a distress call/silence on the frequency?
All stations, (ATSU callsign), Distress traffic ended
What is the phraseology to transfer all aircraft except the emergency aircraft to another frequency?
Mayday (Callsign), all other aircraft contact (station) on (frequency) - out
What is the emergency triangle procedure?
Right Turns - Transmitter failure only (Hear Alright)
Left Turns - Complete Failure (Nothing Left)
2 minute legs for 300knts or less
1 minute legs for 300knts or more
What are the D&D Frequencies?
121.5MHz and 243MHz
What must ATCOs consider regarding D&D?
If an aircraft calls on 121.5, D&D has both executive and operational control. If D&D transfer the aircraft to another unit they pass-over Operational Control but retain Executive Control.
Surveillance Cover - D&D only have access to Area Control ATS, which may have poor low-level coverage, and so D&D may seek early handover to diversion aerodrome.
MSA - D&D do not have detailed knowledge of local airspaces, terrain or obstacles. Therefore, D&D may require guidance on local Minimum Sector Altitudes.
RTF Coverage - D&D’s low-level radio coverage (below 3,000 ft amsl) is poor and so an early handover to the diversion aerodrome may be sought by D&D.
D&D can provide an instant VHF auto-triangulation fixing service on 121.5 MHz.
When are Aerodrome Control Towers responsible for alerting RFFS?
An aircraft accident has occurred on or in the vicinity of the aerodrome
Info has been received that the safety of an aircraft has been impaired
Requested by the flight crew
When deemed necessary or desirable
How is a message from the operator to be passed?
To the commander immediately using the operator’s own words.
When an aircraft in CAS needs to dump fuel, what should ATC coordinate with the flight crew?
Route to be flown
Level to be used
Estimated duration of fuel dump
Frequency to be monitored whilst dumping fuel
What are the levels for jettisoning fuel?
At least 10,000ft above ground level
If not practical or unsafe, aircraft may dump fuel at
7000ft agl in winter
4000ft agl in summer
Only in extreme emergency scenarios can it be lower
Avoid Thunderstorms
What is the definition of a strayed aircraft?
An aircraft which has deviated significantly from its intended track, or which reports it is lost
What is the definition of an unidentified aircraft?
An aircraft which has been observed or reported to be operating in a given area but whose identity has not been established
What are the actions for a strayed aircraft?
Attempt to establish comms and inform pilot of their position
Inform other ATSUs into whose area the aircraft has strayed or may stray
Request assistance from D&D, other units and other aircraft in establishing comms
Notify ACC Sup if unlawful interference is suspected
What are the actions for a Lost aircraft?
Endeavour to provide every possible assistance
Treat estimated positions given by pilots with caution
Use ATS systems and VDF to help locate the aircraft
If RT is poor, suggest pilot climbs if able to get better coverage
Be aware of local terrain and obstructions and advise pilot to climb if there is any doubt that adequate terrain clearance exists
Request assistance from other ATSUs
Inform D&D
Notify ACC Sup
What should be done for a lost aircraft once its position has been established?
Advise aircraft of its position and issue any corrective action
Coordinate with other ATSUs when providing corrective action
Notify units that were consulted
What should be done about an unidentified aircraft?
Attempt to establish the identity of the aircraft
Attempt to establish two-way comms
Inform D&D and request assistance
Attempt to obtain info from other aircraft
Notify those units consulted when the aircraft’s identification has been established
Notify ACC Sup if unlawful interference is suspected
Complete MOR