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John M Tipton
Joined: 07 Aug 2018
Posts: 45
Location: Devon - England
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 Posted: Tue Jun 25, 2019 8:57 am Post subject: Warning light (colours) |
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Hi Guys
What are the accepted colours for warning lights: Starter engaged, Alternator out and Low Oil pressure: OK Red for those, what about Parking Break set, Fuel pump 'on', Low fuel etc
John
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nuckolls.bob(at)aeroelect
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| Posted: Tue Jun 25, 2019 10:32 am Post subject: Warning light (colours) |
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At 11:57 AM 6/25/2019, you wrote:
| Quote: | --> AeroElectric-List message posted by: "John M Tipton" <john(at)tiptonuk.eu>
Hi Guys
What are the accepted colours for warning lights: Starter engaged, Alternator out and Low Oil pressure: OK Red for those, what about Parking Break set, Fuel pump 'on', Low fuel etc |
In the heavy iron world, Warnings (imperatives) are red, cautions are amber, notifications are about any other color . . . green, blue, magenta, etc.
If you're going to flash a light for attention getting operation, 2 to 3 flashes per second are legacy design goals.
Bob . . .
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jim(at)PoogieBearRanch.co
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| Posted: Tue Jun 25, 2019 10:34 am Post subject: Warning light (colours) |
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My preference for light is consistent with Army aviation practice:
Red = Dangerous situation: Basically things that would require me
to land immediately or as soon as practical. (Low oil pressure,
Critical fuel level, etc.)
Amber = Warning or potential danger: Basically things that potentially
impact the operation of the aircraft, and may require intervention.
(Alternator failed, Started engaged, Parking brake on, Low fuel)
Green = Advisory: An indication of a normal condition. (Fuel pump
switch on, Lights/beacons on, etc.)
On the plane I'm building, I plan to use rocker switches that have LED
lights built in to indicate when the switch is on. I'll use green LEDs
for the switches that are "normally on" (master, alternator, magnetos,
beacon, strobes, etc.). I'll use "amber" LEDs in the switches that are
normally off, and that would not be routinely left on (boost pump,
starter – a momentary-on switch, and anything else like that).
I don't think I would use a "red" LED in a switch, although I might
consider it if I had a "normally off" secondary alternator design. That
"red" light would remind me that I'm in an "other-than-normal"
configuration when that switch is on. But as a general rule, I don't
like seeing red lights on the panel...
One advantage of using an EFIS with built-in engine monitoring is that
all this can be handled internally to the EFIS/EMS, and only an external
"master caution lights" are needed on the panel (preferably way up at
the top, where you can't miss them) to remind you to look at the glass
screen to see what's wrong... These lights usually have a "reset"
button somewhere in the glass box to re-arm the master caution system
for the next failure. I kind of like this whole approach. Many of the
EFIS/EMS systems for EAB use also allow you to set the ranges for green,
yellow, and red operations, and trigger the external "red" or "amber"
caution light appropriately.
Jim Parker
------
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trigo(at)mail.telepac.pt
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| Posted: Tue Jun 25, 2019 11:01 am Post subject: Warning light (colours) |
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Jim
Excelent answer & suggestions
Carlos
Enviado do meu iPhone
No dia 25/06/2019, às 19:32, <jim(at)poogiebearranch.com> <jim(at)poogiebearranch.com> escreveu:
[quote]
My preference for light is consistent with Army aviation practice:
Red = Dangerous situation: Basically things that would require me
to land immediately or as soon as practical. (Low oil pressure,
Critical fuel level, etc.)
Amber = Warning or potential danger: Basically things that potentially
impact the operation of the aircraft, and may require intervention.
(Alternator failed, Started engaged, Parking brake on, Low fuel)
Green = Advisory: An indication of a normal condition. (Fuel pump
switch on, Lights/beacons on, etc.)
On the plane I'm building, I plan to use rocker switches that have LED
lights built in to indicate when the switch is on. I'll use green LEDs
for the switches that are "normally on" (master, alternator, magnetos,
beacon, strobes, etc.). I'll use "amber" LEDs in the switches that are
normally off, and that would not be routinely left on (boost pump,
starter – a momentary-on switch, and anything else like that).
I don't think I would use a "red" LED in a switch, although I might
consider it if I had a "normally off" secondary alternator design. That
"red" light would remind me that I'm in an "other-than-normal"
configuration when that switch is on. But as a general rule, I don't
like seeing red lights on the panel...
One advantage of using an EFIS with built-in engine monitoring is that
all this can be handled internally to the EFIS/EMS, and only an external
"master caution lights" are needed on the panel (preferably way up at
the top, where you can't miss them) to remind you to look at the glass
screen to see what's wrong... These lights usually have a "reset"
button somewhere in the glass box to re-arm the master caution system
for the next failure. I kind of like this whole approach. Many of the
EFIS/EMS systems for EAB use also allow you to set the ranges for green,
yellow, and red operations, and trigger the external "red" or "amber"
caution light appropriately.
Jim Parker
------
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bob.verwey(at)gmail.com
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| Posted: Tue Jun 25, 2019 9:51 pm Post subject: Warning light (colours) |
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Jim you don't subscribe to the 'dark cockpit' theory?
On Tue, 25 Jun 2019, 8:38 PM Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
| Quote: | At 11:57 AM 6/25/2019, you wrote:
| Quote: | --> AeroElectric-List message posted by: "John M Tipton" <john(at)tiptonuk.eu (john(at)tiptonuk.eu)>
Hi Guys
What are the accepted colours for warning lights: Starter engaged, Alternator out and Low Oil pressure: OK Red for those, what about Parking Break set, Fuel pump 'on', Low fuel etc |
In the heavy iron world, Warnings (imperatives) are red, cautions are amber, notifications are about any other color . . . green, blue, magenta, etc.
If you're going to flash a light for attention getting operation, 2 to 3 flashes per second are legacy design goals.
Bob . . .
|
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http://www.matronics.com/Navigator?AeroElectric-List |
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