colour vision - safety facts requiring unaffected colour ... · easa technical information...

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EASA technical information 31.01.2011 Safety elements requiring normal colour vision of cabin crew Cabin Crew vs. colour vision – safety aspects 1/18 INTRODUCTION The enclosed technical information is provided on request of the EC in order to describe the elements that require a normal colour vision to allow cabin crew to appropriately perform the required safety checks as well as any required action during normal, abnormal and/or emergency circumstances. This shows that in case a cabin crew member has a colour vision abnormality, there may be a risk that the situation is not correctly assessed and, consequently, the required safety actions/procedures cannot be adequately completed/implemented, which may effect the safety of the flight and/or passenger safety depending on the type of circumstances encountered. 1. FIRE EXTINGUISHER (Halon 1211) Operational status of the device (liquefied gas under pressure) is indicated in pressure gauge – by position of the needle in relevant coloured zone. 2. FIRE / SMOKE In case of fire / smoke crew members must – amongst providing other vital information – specify COLOUR of smoke/flames, which could indicate the source of fire.

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Page 1: Colour vision - safety facts requiring unaffected colour ... · EASA technical information 31.01.2011 Safety elements requiring normal colour vision of cabin crew Cabin Crew vs. colour

EASA technical information 31.01.2011 Safety elements requiring normal colour vision of cabin crew

Cabin Crew vs. colour vision – safety aspects 1/18

INTRODUCTION The enclosed technical information is provided on request of the EC in order to describe the elements that require a normal colour vision to allow cabin crew to appropriately perform the required safety checks as well as any required action during normal, abnormal and/or emergency circumstances. This shows that in case a cabin crew member has a colour vision abnormality, there may be a risk that the situation is not correctly assessed and, consequently, the required safety actions/procedures cannot be adequately completed/implemented, which may effect the safety of the flight and/or passenger safety depending on the type of circumstances encountered.

1. FIRE EXTINGUISHER (Halon 1211)

Operational status of the device (liquefied gas under pressure) is indicated in pressure gauge – by position of the needle in relevant coloured zone.

2. FIRE / SMOKE

In case of fire / smoke crew members must – amongst providing other vital information – specify COLOUR of smoke/flames, which could indicate the source of fire.

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3. PORTABLE BREATHING EQUIPMENT – Scott Smoke Hood

Operational status of the device is checked by visual inspection of ‘Humidity Indicator’ (in picture below marked with arrow - “window”). Humidity Indicator is BLUE in colour. Device cannot be used if Humidity Indicator changes colour from BLUE to PINK – this indicates non-operational/functional status of the device.

4. LAVATORY AUTOMATIC FIRE EXTINGUISHING SYSTEM

A) A300 / A310 is equipped with “temperature plate” which enables cabin crew to check the status of the device. The colour of temperature plate dot is white. Change of colour indicates that fire extinguisher operated after an unusual increase of temperature and the device is empty.

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B) A318/A319/A320/A321/A330/A340 is equipped with an installed

device, content of which is indicated by a position of needle in a coloured area of the pressure gauge.

C) B777 is equipped with “temperature indicator” containing several GREY dots. Dots turn BLACK when exposed to high temperatures. If any of the dots changed colour and the nozzle tip of the extinguishing device changed colour, the device has discharged.

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5. LAVATORY SMOKE DETECTION SYSTEM

A centralised smoke detection system consists of aural and coloured visual warning system (light indications on the panel inside / outside the affected toilet; on Cabin Management System panel (FAP / CMS) / Cabin crew panels (Additional Attendant Panel - AAP); Area Call Panel (ACP); Interphone handset station). The system is energised when smoke is detected in lavatory and respectively according to aircraft type during mandatory pre-flight check of the system.

A) A300 / A310 – outer lavatory wall panel

B) A300 / A310 – coloured SMOKE LAV indication on FAP and AAP and non-coloured SMOKE LAV TEST push-button on FAP for conduct of pre-flight smoke detection system check.

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C) A318/A319/A320/A321 – lavatory smoke detection system; apart from aural indications, the following visual indications will be observed once smoke is detected: - flashing amber light on ACP (Area Call Panel) - flashing red light on AIP (Area Indication Panel) - flashing amber light outside the affected lavatory - integral lights (small dots) coloured in red on SMOKE LAV button on

FAP (Forward Attendant Panel)

D) A330/A340 – lavatory smoke detection system indications (include SMOKE LAV button on FAP / AAP and the relevant indication page on FAP)

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E) B777 – smoke detector inside lavatory

1. indicates operational status of smoke detector 2. selt-test switch to activate aural/visual indications 3. illuminates when presence of smoke has been detected 4. suppresses all alarm indications once pushed

6. LAVATORY WATER HEATER Indication of unit in ON position

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7. DOORS / EXITS

A) A318/A319/A320/A321/A330/A340 - safety pin preventing arming/disarming lever from accidental

movement (when door/exit is disarmed) is equipped with a coloured flag indicating an alert to cabin crew of the disarmed mode of the door/exit

- double coloured slide control lever window indicating the status of the slide – armed/disarmed

- double coloured door visual indicators indicating the status of the door – locked/unlocked

- door electrical warning system consisting of differently coloured warning lights – SLIDE ARMED / CABIN PRESSURE

- escape slide/slide raft – contains three devices for different purposes therefore each coloured differently - manual inflation handle / detach handle / mooring line

- slide raft contains various coloured survival equipment - survival equipment – day/night flares - each side of the device

producing differently coloured smoke or flame to be used during day or night; sea dye marker – significantly fluorescent coloured chemical

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Day and Night flare:

B) B777 - Armed / Disarmed function and operation

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- Readiness of overwing ramp slide indicated by “BARBER POLE”; visibility

of the “barber pole” is indication that the overwing ramp slide is ready for evacuation. Passengers must not be allowed onto the wing until slide is fully inflated – indicated by barber pole.

-

C) A340 – readiness of overwing ramp slide indicated by fluorescent STOP flag

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8. OXYGEN SYSTEM

a)Flight crew oxygen system Cabin crew are required to know the function/operation of flight crew oxygen system in case of pilot incapacitation. The difference between the pictures below and the real devices is the colour of the hose which is grey (green here).

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b)Cabin drop-down oxygen system

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9. CABIN CREW ASSISTING OPERATING PILOT IN CASE OF PILOT

INCAPACITATION In case of pilot incapacitation, cabin crew may be required to assist the operating pilot in preparation for / during landing. Cockpit instruments/panels consist of differently coloured warning lights/indications; aerodrome landing navigation facilities consist of differently coloured navigation elements. Unaffected colour vision is vital.

10. COMMUNICATION SYSTEM

Communication system consists of aural and coloured visual alerting indications. Differently coloured lights indicate who/where initiated a call and in which mode – normal/emergency; signal an alert in case of smoke detection in lavatory; signal emergency call from flight crew compartment. Example of communication indications on A318/A319/A320/A321/A330/ A340

Flight Crew Calls FWD/AFT Cabin crew station – normal call: i) Chime - 1 Hi-Lo chime (via respective loudspeakers). ii) ACP - Steady Pink light at respective ACP. iii) AIP - Steady green light at respective AIP and “CAPTAIN CALL”

text message. Flight Crew Emergency Call to Cabin Crew): i) Chime - 3 Hi-Lo chime (via all cabin loudspeakers). ii) ACP - Flashing Pink light at all ACP. iii) AIP- Flashing Red light at all AIP and text message “EMERGENCY

CALL”. a) Different versions of Area Call Panel (ACP)

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b) Passenger call from lavatory – indication light

11. LIFE JACKETS

Differently coloured: INFANT – dark orange in colour CHILD / ADULT –orange-yellow in colour CREW – red-orange in colour

12. CABIN CREW PANELS

a) Cabin Management System / FAP (Forward Attendant Panel)

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b) Area Indication Panel (AIP) – indicates system information (lavatory

smoke location; hijack alarm; interphone system - normal/emergency calls; public announcement; passenger calls)

13. SECURITY In case of suspicious item being discovered and/or upon receipt of a bomb threat a thorough search is to be conducted. Crew members must provide detailed description of the device. Below is an example of action after transferring suspicious device to the least risk bomb location in aircraft cabin. Layers of various materials (of numerous colours) will be created, colours may represent indications.

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14. FLIGHT CREW COMPARTMENT SECURITY DOOR Flight crew compartment security door access panel consists of differently coloured indication lights each specifying a different status of the door.

15. MEDICAL EMERGENCIES

- Heart attack – skin colour may turn blue/grey; finger tips/lips may turn blue;

- External bleeding – colour of blood indicates rapture of vein or artery;

- Internal bleeding – colour of exposed blood indicates area of medical problem (e.g. bright red blood coming out from mouth indicates lungs problem; brown vomited blood indicates stomach problem; blood in urine indicates problem with bladder, etc.)

- Stroke – caused by Cerebral haemorrhage or Cerebral Thrombosis – will be indicated by flushed (red) face;

- Epilepsy – stage 2 – person may become blue; - Automated External Defibrillator (AED)

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Miscellaneous: Airline may have a policy to use differently coloured seals indicating the status of particular equipment (e.g. red seals on Emergency Medical Kit (EMK) containing life saving equipment / Aeromedic First Aid Kit (FA) indicate that EMK/FA was used and device needs to be changed / replenished by Maintenance; yellow/green seals on the above mentioned equipment indicate that device is new / unused, etc.)

16. DANGEROUS GOODS Coloured labelling of packages / items

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