Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Emergency Exit Path Lighting  
User currently offlineBigphilnyc From United States of America, joined Jan 2002, 4077 posts, RR: 51
Posted (12 years 8 months 3 weeks 4 hours ago) and read 7033 times:

I check maintenence records of aircraft a lot, and it seems, without exagerration that about 75% of maintenance entries pertain to "emergency exit path lights inoperative".

What is up with that? It doesn't matter what the aircraft.

Why do they never work?


Phil Derner Jr.
7 replies: All unread, jump to last
User currently offline744rules From Belgium, joined Mar 2002, 408 posts, RR: 0
Reply 1, posted (12 years 8 months 3 weeks 1 hour ago) and read 7008 times:

Isn't this a safety item ?? I've known a flight being cancelled as the aft cabin p/a system was not working.

User currently offlineVC-10 From United Kingdom, joined Oct 1999, 3727 posts, RR: 32
Reply 2, posted (12 years 8 months 3 weeks 1 hour ago) and read 7004 times:
Support Airliners.net - become a First Class Member!

On most a/c the floorpath lighting is on the floor (as against built into the seats). Being on the floor it naturally get troddon on, but in addition it is also attacked by vacuum cleaners every t/round and it is not unknown for the wiring to be cut when new carpet is fitted

User currently offlineOPNLguy From , joined Dec 1969, posts, RR:
Reply 3, posted (12 years 8 months 2 weeks 6 days 14 hours ago) and read 6937 times:

Some of the emergency floor path lights can be inop, but with limitations. The airline's minimum equipment list (MEL) will specify acceptable configurations.

There are several different vendors of these systems, but in the simplest of terms (using a 737 as an example) they have single white lights (20-24 inches apart) in the aisle, and 4-6 (depending upon the vendor) red lights wherever there is an exit. The MEL says at least 1/2 of all the white lights must be operative, and no two adjacent white lights may be inop. The MEL also says no more than 2-3 of the red lights at the exits can be inop. Anything other than that, you must fix it before it flies.

User currently offline242 From United States of America, joined Oct 2000, 498 posts, RR: 0
Reply 4, posted (12 years 8 months 2 weeks 6 days 13 hours ago) and read 6921 times:

The exit path lighting sees a very abusive life. Lights mounted on tracks in the floor usually have wires running under the carpet, where they get run over, wet with coffee, cola etc....

The seat mounted lights get smashed by careless passengers with heavy bags and cabin attendants with galley carts. The wiring usually is ty-rapped under the seat and is frequently damaged by passengers trying to stuff huge peices of luggage under the seat.

User currently offlineCrosswind From United Kingdom, joined Nov 2000, 2650 posts, RR: 56
Reply 5, posted (12 years 8 months 2 weeks 6 days 12 hours ago) and read 6926 times:
Support Airliners.net - become a First Class Member!

My airline is removing the exit path lighting from our fleet, as it is prone to damage and can delay flights while it is fixed, and repairs can be complex when dealing with wiring under the cabin floor.

The exit path lighting is being replaced with photoluminescent strips on the floor of the aircraft along the aisle. Any gap in the strip down the aisle indicates an exit at that point - the system is that simple. The initial investment is high, the photoluminescent strips cost approx £300 per metre, but they are totally self contained, require no power source and very little maintenace, and most importantly are totally reliable!

Hopefully, over the lifetime of the aircraft the investment will be more than repaid in reduced maintenance costs, and improved reliability.

The photo below shows a Finnair 757 with the same photoluminescent strips - you'll have to look at the large version to really see them.

View Large View Medium
Click here for bigger photo!

Photo © Pekka Lehtinen

Not the best photo, but the only one I could find in the database. While still quite rare, I think this type of exit path marking will become very common over the next couple of years as airlines get over the initial costs and realise the long term cost and reliability benefits...


User currently offlineWilcharl From United States of America, joined Jun 2000, 1183 posts, RR: 3
Reply 6, posted (12 years 8 months 2 weeks 6 days 8 hours ago) and read 6878 times:

So once installed does the safety speach change from "whtie lights lead to red lights indicating that you have reached or are near an exit to" "low level photoluminescent strips are installed along the aisles an absence of such strip indicates that you have reached or are near an exit" ???

User currently offlinePilottim747 From United States of America, joined Jul 2001, 1607 posts, RR: 4
Reply 7, posted (12 years 8 months 2 weeks 6 hours ago) and read 6755 times:

Good reminder Crosswind,

I've seen this before on aircraft (although I can't remember where now). But I was wondering about the difference. It does make a lot of sense and I'm sure it will pay off in the long run.


Aviation Photographers & Enthusiasts--Coordinate your life.
Top Of Page
Forum Index

Reply To This Topic Emergency Exit Path Lighting
No username? Sign up now!

Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)

Similar topics:More similar topics...
Water Coming Out The Emergency Exit? posted Wed Oct 25 2006 01:39:29 by Mohavewolfpup
Emergency Exit Slide Videos posted Mon Oct 2 2006 06:52:56 by UAL757
Weight Of B737 Emergency Exit... posted Tue Sep 26 2006 01:33:44 by Kaddyuk
Can Emergency Exit Doors Be Opened posted Fri May 24 2002 13:24:34 by Jwoods1963
Opening The Emergency Exit During Flight? posted Tue Jul 4 2000 23:54:33 by Lantern88
Question About Emergency Lighting posted Mon Aug 23 2004 08:05:14 by FlyingNanook
Anti-Skit Fundamentals/ Emergency Situations posted Tue Oct 3 2006 08:18:18 by Speedracer1407
GE 90 Emergency AD posted Mon Oct 2 2006 08:40:01 by Zeke
BAC111 Emergency Access Openings posted Wed Sep 27 2006 17:48:11 by Vzlet
B737 NG Overwing Exit Lock posted Sun Sep 17 2006 00:44:25 by MarkHKG

Sponsor Message:
Printer friendly format