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MD-80 Landing Lights  
User currently offlineRydawg82 From United States of America, joined Sep 2001, 868 posts, RR: 8
Posted (13 years 1 week 4 days 7 hours ago) and read 3952 times:

Hello....

I have noticed while flying on Alaska Airlines MD-80 aircraft that immediatly before the wing landing lamps *that fold down* are deploy'd the overhead flight attendant chime sounds twice then the lamps fold out, I noticed this on all Alaska Airlines MD-80 flights....Any particualar reason? Ry


You can take the pup out of Alaska, but you can't take the Alaska out of the pup.
10 replies: All unread, jump to last
 
User currently offlineSxmarbury33 From United States of America, joined Oct 2000, 445 posts, RR: 0
Reply 1, posted (13 years 1 week 4 days 7 hours ago) and read 3837 times:

Well below 10k ft you need landing lights on and below 10k most things need to be near ready for landing in the cabin and the chimes are the pilot telling the FA's they are below 10000 ft and that their is a sterile cockpit and that they need to have cabin secured soon.

User currently offlineRydawg82 From United States of America, joined Sep 2001, 868 posts, RR: 8
Reply 2, posted (13 years 1 week 4 days 7 hours ago) and read 3809 times:

But this happend's despite the altitude, and is always at the exact moment the landing lights are brought down on approach........


You can take the pup out of Alaska, but you can't take the Alaska out of the pup.
User currently offlineMcomess From United States of America, joined Jun 2000, 66 posts, RR: 0
Reply 3, posted (13 years 1 week 4 days 6 hours ago) and read 3784 times:

Its probably part of their descent or prelanding checklist. For example, "altimeters reset, cabin crew notified (chimes), landing light on, approach briefing complete, etc," so that as long as the crew is following the checklist, the sequence will always be the same.

User currently offlineSxmarbury33 From United States of America, joined Oct 2000, 445 posts, RR: 0
Reply 4, posted (13 years 1 week 4 days 4 hours ago) and read 3750 times:

Ok well the landing lights are FAA required to be on below ten thousand feet. Also it is Faa regulation that their is a sterile cockpit and all electronic devises have to be off below ten thousand. So the dings assosiated with the lights are to signal that the fa;s cant come in the cockpit and that they need to make sure all pax have stowed electronics. Mcomess is right too because on most planes the ten thousand checks are like that.

User currently offlineCdfmxtech From United States of America, joined Jul 2000, 1341 posts, RR: 26
Reply 5, posted (13 years 1 week 3 days 18 hours ago) and read 3715 times:

PART OF THE CHECKLIST

User currently offlineTWAalltheway From United States of America, joined Jul 2001, 144 posts, RR: 0
Reply 6, posted (13 years 3 days 8 hours ago) and read 3610 times:

Hey,
For some reason, in the past, when I have flown on TWA MD-80's, when the fuel is turned on during the engine start sequence, the chime sounds, and the lights flicker for a second. So i sorta have to agree with Rydawg82.

TWA all the way!


User currently offlineFBU 4EVER! From Norway, joined Jan 2001, 998 posts, RR: 7
Reply 7, posted (12 years 12 months 4 days 21 hours ago) and read 3546 times:

The chime sounding during engine start on an MD-80 happens when the engine reaches idle speed and electrical power changes automatically from the relevant APU BUS to the AC BUS.This is represents a huge transfer of electrical power,and the cabin lights tend to flicker as it happens,indeed,on some of our planes (SAS),even the EFIS screens might go blank for a brief moment!
McD standard is for the wing and nose landing lights to be manually controlled by the pilots according to their Company's Operating Procedures.These may vary from company to company.We in SAS extend the wing lights (but do not turn them on) when we are given the "thumb up" (Clear Signal) by the mechanic or person in charge for the ground equipment and push-back procedure.The nose Taxi Light,adjacent to the Nose Landing Light,is lit at this time,so are the Ground Flood Lights located on either side of the fuselage,forward of the wing.
All three Landing Lights are lit just before Take-off roll is started and turned off and retracted when the gears have been retracted.The GND. FLD. LTS remain on until passing FL100 (10,000 feet approx.) and are turned on again when passing this altitude during approach.Landing Lights are usually extended when slats and flaps are extended,and switched on when passing 1000 feet descending on the approach or when landing clearance has been received.
I haven't heard of any modification on the MD-80 series where the landing lights operate automatically at any phase of flight,except during an engine failure during take-off,when the lights turn off and retract when the gear handle is raised to the UP position.



"Luck and superstition wins all the time"!
User currently offlineAA737-823 From United States of America, joined Mar 2000, 5943 posts, RR: 11
Reply 8, posted (12 years 12 months 3 days 3 hours ago) and read 3474 times:

Where are these landing lights that extend and retract? I have never seen them. I know that on classic 732s and 733-4-5s they are in one of the flap canoes, but have never seen them on an MD-80 type...

So where are they?

Randy


User currently offlineM80 From Finland, joined Mar 2001, 36 posts, RR: 0
Reply 9, posted (12 years 12 months 2 days 23 hours ago) and read 3462 times:

Hi Randy

The wing landing lights are located at the wingtips.
Check out the two photos:


Click for large version
Click here for full size photo!

Photo © Ryan Pastorino



Click for large version
Click here for full size photo!

Photo © Jorgos Tsambikakis



In these pics the lights are folded in the up position (inside the wing itself) but you can see the circle shaped light facing towards ground.

Kalle


User currently offlineFBU 4EVER! From Norway, joined Jan 2001, 998 posts, RR: 7
Reply 10, posted (12 years 12 months 2 days 17 hours ago) and read 3445 times:

Exactly,Kalle!
There should be several other MD-80/90 and DC-9 photos in the photo sections.At least some of the SAS machines will have their lights extended if they are taxying.



"Luck and superstition wins all the time"!
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