izsurk
Topic Author
Posts: 1
Joined: Tue Jan 09, 2018 6:42 pm

Annunciator colors / colors in cockpit

Wed Jan 10, 2018 10:34 am

Hi,

I was looking for a list of colors and their "category" / meaning like:

Red lights - Warning - indicate a critical condition and require immediate action.
Amber lights - Caution - require timely corrective action.
Blue lights - Advisory - eg valve positions and unless bright blue, ie a valve/switch disagreement, do not require crew action.
Green lights - Satisfactory - indicate a satisfactory or ON condition.

Is there a better list or a official standard for colors?


Thank you in advance,


Michael
 
26point2
Posts: 977
Joined: Wed Mar 03, 2010 6:01 am

Re: Annunciator colors / colors in cockpit

Wed Jan 10, 2018 2:27 pm

White- Status

On the CAS messages Bombardier calls Blue “Cyan”- Cyan for Loss of Redundancy. Ex: 1 of 4 generators failed would be Cyan.
 
BoeingGuy
Posts: 4820
Joined: Fri Dec 10, 2010 6:01 pm

Re: Annunciator colors / colors in cockpit

Wed Jan 10, 2018 3:55 pm

izsurk wrote:
Hi,

I was looking for a list of colors and their "category" / meaning like:

Red lights - Warning - indicate a critical condition and require immediate action.
Amber lights - Caution - require timely corrective action.
Blue lights - Advisory - eg valve positions and unless bright blue, ie a valve/switch disagreement, do not require crew action.
Green lights - Satisfactory - indicate a satisfactory or ON condition.

Is there a better list or a official standard for colors?


Thank you in advance,


Michael


At the manufacturer I work for, Green does not mean satisfactory or on. We have a "Quiet Dark" philosophy. You do not annunciate that something is okay. You annunciate when it's not. Also, we use Amber for Advisory messages, which is allowed by CFR 25.1322.

I know Douglas used cyan for Advisory messages. Not sure about Airbus. They are Amber on that other company's airplanes.

Here's why I have for color philosophy at my company:

Red - Warnings, warning level limitations
Amber - Cautions, caution level limitations (includes Advisory messages)
White - Current status information (includes Armed Autoflight modes, COMM messages and Memo Messages)
Green - Pilot selected data, mode annunciations (includes VOR indications)
Magenta - Target information
Cyan - Background data (includes ADF indications, and non-selectable fields)


Here is the except from the latest FAR on use of color:

Sec. 25.1322

(e) Visual alert indications must:

(1) Conform to the following color convention:
(i) Red for warning alert indications.
(ii) Amber or yellow for caution alert indications.
(iii) Any color except red or green for advisory alert indications. (2) Use visual coding techniques, together with other alerting function elements on the flight deck, to distinguish between warning, caution, and advisory alert indications, if they are presented on monochromatic displays that are not capable of conforming to the color convention in paragraph (e)(1) of this section.


(f) Use of the colors red, amber, and yellow on the flight deck for functions other than flightcrew alerting must be limited and must not adversely affect flightcrew alerting.]

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