goodday
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Cabin Lighting At Take-off And Landing At Night

Mon Dec 18, 2006 11:04 am

safety wise, which is correct, cabin lights on or cabin lights off?
 
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aloha73g
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RE: Cabin Lighting At Take-off And Landing At Night

Mon Dec 18, 2006 11:18 am

At HA, they are supposed to off/dim, so that people's eyesight is adjusted to the conditions outside. I think other airlines are the same.

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suske
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RE: Cabin Lighting At Take-off And Landing At Night

Mon Dec 18, 2006 11:26 am

Could it be that during take-off and landing the engines generate less bleed air and therefore the less important energy consumers (eg cabin lighting) have to do with less?
 
thepilot
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RE: Cabin Lighting At Take-off And Landing At Night

Mon Dec 18, 2006 11:26 am

I have landed many, many times with the lights dimmed. The strobes/nav lights combined with heavy cabin lights make for ocular stress. Whenever I fly, given in a 172, we need 30 minutes to adjust our rods (night vision sensors) in our eyes. This is for civil PIC, of course, but I would think the FARs 121 or 135 would NOT say "cabin light must be on for landing."
From YVR
 
pilotpip
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RE: Cabin Lighting At Take-off And Landing At Night

Mon Dec 18, 2006 12:05 pm

Quoting Suske (Reply 2):
Could it be that during take-off and landing the engines generate less bleed air and therefore the less important energy consumers (eg cabin lighting) have to do with less?

Bleed air has nothing to do with electrical power. Generators are connected to the engine directly via constant speed drives which keep them turning at the proper speed to deliver the correct 115 volts at 400 cycles.
DMI
 
futuresdpdcop
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RE: Cabin Lighting At Take-off And Landing At Night

Mon Dec 18, 2006 12:27 pm

Quoting Aloha73G (Reply 1):
At HA, they are supposed to off/dim, so that people's eyesight is adjusted to the conditions outside. I think other airlines are the same.

That is correct. I learned that on here. There's been a few threads on it.
 
wrighbrothers
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RE: Cabin Lighting At Take-off And Landing At Night

Mon Dec 18, 2006 9:55 pm

The lights are supposed to be dim, as so you can see, however, they must be dim so that in the event of an emergancy, your eyes can adjust quicker to the outside darkness and to reduce the chance or being 'light blind', try entering a pitch black room from a normal light room and you'll be unable to see anything for a while, this is reason they dim the lights, to reduce the time this happpens.

wrighbrothers
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mats
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RE: Cabin Lighting At Take-off And Landing At Night

Mon Dec 18, 2006 10:14 pm

Or as a few more sarcastic flight attendants say, "We will be dimming the lights to enhance the appearance of our cabin crew."
 
Markhkg
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RE: Cabin Lighting At Take-off And Landing At Night

Mon Dec 18, 2006 10:45 pm

Okay...so how bright exactly are the cabin emergency lights when they turn on?

In my experience the cabin emergency lights are bright enough to negate any of the "pre-dimmed" vision. Although dimming the lights do allow for a better view out the window to assess outside conditions (fire, etc.)
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LXA340
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RE: Cabin Lighting At Take-off And Landing At Night

Mon Dec 18, 2006 10:50 pm

On many day flights all the Cabin lights are on no matter if it is for takeoff or landing which is another indicator that switching them off or on has nothing to do with saving energy. Nevertheless every airline has different regulations regarding to dim or switch all lights off during take off and landing during the night. Also it depends on the cabin crew on most of the airlines I have flowin with the procedure is always different once dimmed and once completely off and vice versa
 
goodday
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RE: Cabin Lighting At Take-off And Landing At Night

Tue Dec 19, 2006 6:45 am

Does Australian Aviation Authority have a regulation to put cabin lights on during take-off and landing in the night?
 
Carpethead
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RE: Cabin Lighting At Take-off And Landing At Night

Tue Dec 19, 2006 12:49 pm

Quoting Goodday (Thread starter):

You are probably asking because on a recent flight in Japan, the lights were not dimmed? For anywhere in the world that I have experienced, all night take-offs and landings the cabin lights were turned off (not dimmed). The FA always announce to the pax for readers to turn on the overhead lights.
For flights in Japan about one in 20 flights the lights are turned off. Why not all or none, I have no clue.
 
crownvic
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RE: Cabin Lighting At Take-off And Landing At Night

Tue Dec 19, 2006 2:02 pm

There is nothing more annoying than having a window seat during night flying and the crew leaving the the cabin lights on full blast on landing and take off. I have noticed this becoming more and more common with flying in the past two years.
 
VHXLR8
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RE: Cabin Lighting At Take-off And Landing At Night

Tue Dec 19, 2006 2:05 pm

Quoting Goodday (Reply 10):
Does Australian Aviation Authority have a regulation to put cabin lights on during take-off and landing in the night?

No, there is no such regulation in Australia. In fact, QF always dims the cabin lights for takeoff and landing. Not sure about DJ.
 
chrisrad
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RE: Cabin Lighting At Take-off And Landing At Night

Tue Dec 19, 2006 2:07 pm

I know MH switch off the lights completely for takeoff and landing. I think that is the best way fro your eyes to adjust to the night time.
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xv408
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RE: Cabin Lighting At Take-off And Landing At Night

Tue Dec 19, 2006 9:31 pm

Just doing a quick Google search, it seems that dimming the lights is a recommendation, not a regulation (see CHIRP bulletin and NBAA links below)
http://www.chirp.co.uk/main/downloads/docs/CCFB15.doc
http://web.nbaa.org/public/ops/safet...dOperatingProcedures-FixedWing.doc

There is some hint that it used to be a regulation in the early days of passenger-carrying flight, when there was just a curtain (if that) between the crew and the passenger cabin.
 
iairallie
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RE: Cabin Lighting At Take-off And Landing At Night

Wed Dec 20, 2006 4:48 am

It's supposed to aproximate outside conditions. My airline says sidewall lights off overhead dim. With the assumption that ambient light comming throught the windows will equalize the interior exterior lighting.
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HAWK21M
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RE: Cabin Lighting At Take-off And Landing At Night

Wed Dec 20, 2006 6:33 pm

Not all lights off.But Def Dimmed to allow the Eye to adjust to cater to any visable Fire.
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MEL
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Mr.BA
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RE: Cabin Lighting At Take-off And Landing At Night

Mon Dec 25, 2006 12:28 pm

Quoting VHXLR8 (Reply 13):



Quoting VHXLR8 (Reply 13):
In fact, QF always dims the cabin lights for takeoff and landing.

Actually I flew QF quite a few times and they didn't dim the lights at all, not even a bit. Evident when you see them land from the outside.
Boeing747 万岁!
 
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HAWK21M
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RE: Cabin Lighting At Take-off And Landing At Night

Tue Dec 26, 2006 5:59 pm

Quoting Mr.BA (Reply 18):
Actually I flew QF quite a few times and they didn't dim the lights at all, not even a bit. Evident when you see them land from the outside

Is that an SOP or just error.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
nonfirm
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RE: Cabin Lighting At Take-off And Landing At Night

Tue Dec 26, 2006 6:56 pm

I was reading our f/a's manual and in the section covering the announcements section it talks about shutting the cabin lights off and were to locate your reading light.So i would assume they are off for the duration of the flight but the need to be on while on the ground to charge the floor light strips.  airplane 
 
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HAWK21M
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RE: Cabin Lighting At Take-off And Landing At Night

Wed Dec 27, 2006 12:19 pm

Quoting Nonfirm (Reply 20):
So i would assume they are off for the duration of the flight but the need to be on while on the ground to charge the floor light strips

The Emergency path lights along with the Door Exit Lights are charged from Aircraft power supply to Ni-Cad battery packs.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
nonfirm
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RE: Cabin Lighting At Take-off And Landing At Night

Wed Dec 27, 2006 7:44 pm

Quoting HAWK21M (Reply 21):
The Emergency path lights along with the Door Exit Lights are charged from Aircraft power supply to Ni-Cad battery packs.
regds
MEL

Mel our floor path emergency strips are not battery powered the are photoluminescent and require all of the cabin light to be on full bright for charging.All the rest of the light operate off of battery packs but not the floor.We removed all of the battery powered floor strips due to the fact we had to many write-up associated with the system light burned out and wires pulled due to pax luggage and the MEL only allowed a certain amount of light to be inop.As a result of the new system we have no more write up's for the floor lights.
  
http://safety.sv.net/pdf/ccs_jan-feb04.pdf

[Edited 2006-12-27 11:50:16]
 
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HAWK21M
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RE: Cabin Lighting At Take-off And Landing At Night

Thu Dec 28, 2006 3:51 am

Quoting Nonfirm (Reply 22):
floor path emergency strips are not battery powered the are photoluminescent

Very good link.
Thanks for Sharing.
Hows the reliability like practically.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
nonfirm
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RE: Cabin Lighting At Take-off And Landing At Night

Thu Dec 28, 2006 8:07 am

Quoting HAWK21M (Reply 23):
Hows the reliability like practically.

We perform a periodic check for how the intensity of the strip is holding up.They are very easy to change.really the only compliant is some parts of the strips get dirty but the are to be cleaned every night be fleet service.
 airplane 
 
Mr.BA
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RE: Cabin Lighting At Take-off And Landing At Night

Thu Dec 28, 2006 1:41 pm

Quoting HAWK21M (Reply 19):
Is that an SOP or just error

My take on it would be SOP. Some of the members here experienced dimming of cabin lights but as far as it goes for me I haven't seen them doing so. We've got many QF flights into SIN at night and they never do regardless of whether their taking off or landing.
Boeing747 万岁!
 
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HAWK21M
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RE: Cabin Lighting At Take-off And Landing At Night

Thu Dec 28, 2006 10:13 pm

Quoting Mr.BA (Reply 25):
My take on it would be SOP

If its SOP.Whats their reasoning.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
Mr.BA
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RE: Cabin Lighting At Take-off And Landing At Night

Fri Dec 29, 2006 1:29 pm

Quoting HAWK21M (Reply 26):
If its SOP.Whats their reasoning.

I have no idea. During conversations with the flight crew I'll always forget to ask them about this. Maybe in future!
Boeing747 万岁!

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