EXIT signs on aircraft

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Sai
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Joined: 31 Mar 2012, 22:35

EXIT signs on aircraft

Post by Sai » 18 Jun 2017, 17:29

Are there any kind of regulations on the type of EXIT signs that have to be used on (new) aircraft?

It is considered one of the most important items as passengers are briefed on this before every flight.
We used to see the classic red EXIT - lettered sign, sometimes accompanied by another language.
Since Boeing 787 (I think) they started to use the green ‘Running Man’ exit sign which is considered the standard emergency exit sign by the International Standard Organisation (ISO) in everyday life worldwide.

The ‘running man’ is argued, amongst other advantages, to be understood amongst different cultures, languages, etc.…which imo seems a ‘plus’ in aviation.

However it seems now a mix of both signs is used and it doesn’t seem to be an ‘old vs new aircraft’-issue. My observations:

Boeing 737 NG: classic EXIT sign
Boeing 737 MAX: :?:
Boeing 787: Green Running Man, however I saw a pic of a UA B787 with the classic EXIT sign
Airbus A 350: Green Running Man
Airbus A 320: classic EXIT sign
Bombardier CS 100: Green Running Man
Sukhoi SSJ: classic EXIT sign
Other: :?:


So it doesn’t seem to be a case of ‘old vs new’ or ‘Boeing vs Airbus’ or ‘US vs Europe following ISO’

Furthermore it seems on Airbus exit signs are lit during the entire flight
as on Boeing they are only lit during an emergency or power loss…

Can airlines or aircraft manufacturers choose and wouldn’t it be better to use the same sign or are there maybe regulations in place already?
Google isn’t of much help, so thought maybe some people on the forum have an idea… :mrgreen:

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sn26567
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Re: EXIT signs on aircraft

Post by sn26567 » 18 Jun 2017, 18:13

Interesting (and important) question. I never paid too much attention to those signs, but I should, as it relates to safety.

I think that both signs are clearly understood all over the world. The word EXIT itself is not only English, but also Latin and thus quite universal. The green running man also has a meaning that nobody can ignore.

To me, both signs can coexist: both are clear enough to the common people.
André
ex Sabena #26567

feniks
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Joined: 19 Jun 2017, 13:15

Re: EXIT signs on aircraft

Post by feniks » 19 Jun 2017, 14:12

Hello

This is something which is defined in the Certification specifications of the aircraft.
For these ones, it's the CS-25 in EASA environment or the PART 25 in FAA environment.
Paragraph 25.811 clearly defines what you should use as an emergency exit marking.

In the EASA CS-25 it leaves the door open for either the word 'EXIT' or a universal symbolic exit sign.
In the FAR PART 25, it only states you can use the word "exit". Which means there is a difference between US and EU regulations and probably also Airbus and Boeing.

Now, I do remark there is a 'CRI' on the emergency exit marking (not on detail, just mentioned) in the EASA Type certificate of the 787... Might be kind of a deviation on the marking maybe?

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sn26567
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Re: EXIT signs on aircraft

Post by sn26567 » 19 Jun 2017, 14:14

Thanks for your explanations, feniks, and welcome to Luchtzak!
André
ex Sabena #26567

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quixoticguide
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Re: EXIT signs on aircraft

Post by quixoticguide » 19 Jun 2017, 14:35

Image

interesting topic: the Air Koryo IL-18 has a Red Exit sign.
Visit my flights on: http://www.quixoticguide.com

convair
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Re: EXIT signs on aircraft

Post by convair » 19 Jun 2017, 15:57

Always a good idea to take a picture of the Exit sign! ;)

Sai
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Re: EXIT signs on aircraft

Post by Sai » 19 Jun 2017, 21:23

Thanks feniks,
You provided a good starting point to investigate.
According to the docs I found on EASA's website my understanding is that both (EXIT vs. symbolic sign) are accepted by EASA, as long as it is consistently used and fulfills all sorts of other requirements, etc.

So until now I would say it appears a choice of the Boeing designers/engineers of the B787 to start using the green running man.
Didn't have the time to check FAA's docs but can only assume it's the same as AA also uses the symbolic sign on B787 (opposed to UA B787 as an exception)

However the first B737MAX (Malindo Air) seems to use the classic EXIT sign again...Opposed to what I would expect on a 'new' aircraft.

So it remains a mystery after all :lol:

Curious what (European) Airbus will do with their neo's.

feniks
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Re: EXIT signs on aircraft

Post by feniks » 20 Jun 2017, 22:45

Hi

I assume the Boeing 737 has started of with a type design based on the FAR (US) regulations.

Which means they could only have the "EXIT" marking certified as this is what FAR 25.811 obliges to.
FAR 25 does not have the possibility to use the green man so far...

I see in the type certificate a EASA CRI mentioned again for the 737-8 "MAX" on the FAR 25.811 certification base.
Maybe they do leave the door open to have them installed on the "European" 737, just a guess. ;)

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