beeweel15
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Light In The Landing Gear Bay

Mon Sep 13, 2010 4:20 pm

If you look closely inside the landing gear bay there is a red light that is constantly on what is it for.


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atlamt
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RE: Light In The Landing Gear Bay

Mon Sep 13, 2010 6:53 pm

It is a warning light to stay clear of the landing gear doors. Any time the gear doors are opening/closing or if the gear is in transit the light will be on. It's meant to warn people working in the area on the ground but the system still works in the air.
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PGNCS
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RE: Light In The Landing Gear Bay

Mon Sep 13, 2010 7:15 pm

Quoting atlamt (Reply 1):
It is a warning light to stay clear of the landing gear doors. Any time the gear doors are opening/closing or if the gear is in transit the light will be on

Thanks for that info! Is that exclusive to Boeing or common to other manufacturers as well? I am never back there when the doors move, so I have not really thought about it; it certainly seems like a very obvious and good idea.
 
Fly2HMO
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RE: Light In The Landing Gear Bay

Mon Sep 13, 2010 9:32 pm

On a slightly related note, I vaguely remember something about some older jet (707?) having a PA speaker/siren in the gear well. Or maybe it was just a poorly executed "inception" in my mind 
 
tb727
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RE: Light In The Landing Gear Bay

Mon Sep 13, 2010 9:54 pm

Quoting Fly2HMO (Reply 3):
On a slightly related note, I vaguely remember something about some older jet (707?) having a PA speaker/siren in the gear well. Or maybe it was just a poorly executed "inception" in my mind

The 727 has a Ground Crew horn. You press the button on the overhead panel and a loud annoying horn sounds from the nose gear well. I like doing it to make people look around since no one knows what it is coming from. I'd imagine the 707 would have the same thing.

There is also a wheel well light for inspecting the wheel wells. On the walk around the FE will bang on the side of the plane to turn all the landing lights on, a nice FO will flip the wheel well light on and leave it on until the FE is back in the cockpit.
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tdscanuck
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RE: Light In The Landing Gear Bay

Tue Sep 14, 2010 12:12 am

Quoting tb727 (Reply 4):
The 727 has a Ground Crew horn.

As far as I know, all Boeing's have this.

Tom.
 
Goldenshield
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RE: Light In The Landing Gear Bay

Tue Sep 14, 2010 10:10 am

Quoting tdscanuck (Reply 5):
Quoting tb727 (Reply 4):
The 727 has a Ground Crew horn.

As far as I know, all Boeing's have this.

As far as I know, all aircraft with more than 19 seats have them.
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tb727
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RE: Light In The Landing Gear Bay

Tue Sep 14, 2010 7:17 pm

I also read somewhere that on Russian built airplanes, especially the late 1960's/early 70's era TU-154's, the lights in the wheel well are a function of the chemtrail system they had installed. I do not however remember whether it was a tank full or empty light, maybe someone else can elaborate on that. After the cold war they became just that what they are today, wheel well inspection lights.
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474218
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RE: Light In The Landing Gear Bay

Tue Sep 14, 2010 7:32 pm

Quoting Goldenshield (Reply 6):
As far as I know, all aircraft with more than 19 seats have them.


No, horns, bells, whistles, etc in the L-1011 wheel wells, and they have a few more than 19 seats!
 
Goldenshield
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RE: Light In The Landing Gear Bay

Tue Sep 14, 2010 10:29 pm

Quoting 474218 (Reply 8):
No, horns, bells, whistles, etc in the L-1011 wheel wells, and they have a few more than 19 seats!

Then I stand corrected (Of course, I never go to work an L-1011, as my station wasn't big enough to need one.)
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bri2k1
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RE: Light In The Landing Gear Bay

Wed Sep 15, 2010 2:51 pm

And here I thought it was just the reading light in the SSU (Stowaway Service Unit)
Position and hold
 
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HAWK21M
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RE: Light In The Landing Gear Bay

Wed Sep 15, 2010 5:48 pm

Technically referred to as the Wheelwell unsafe light.
regds
MEL.
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Tristarsteve
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RE: Light In The Landing Gear Bay

Wed Sep 15, 2010 5:49 pm

Quoting tb727 (Reply 4):
There is also a wheel well light for inspecting the wheel wells.

On the older B737s that wheel well light was mandatory. i.e. it had to work on departure for a night flight. (Maybe NG as well, don't work them).
If the green undercarriage down indicator failed, the pilot could look through a window in the floor at two red stripes on the gear to see if they were aligned. The nose gear window is in the flight deck floor under a little flap. The main gear one is under the carpet in the cabin. There is a mark on the hatrack to show its position.
But unless the window and the mirrors are crystal clean, its hard to see anything positive.
 
411A
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RE: Light In The Landing Gear Bay

Thu Sep 16, 2010 11:45 am

Quoting Fly2HMO (Reply 3):
On a slightly related note, I vaguely remember something about some older jet (707?) having a PA speaker/siren in the gear well.

You are correct.
A few B707's were equipped with a ground hailer system.
A PA speaker in the nose wheel well, activated from either pilots audio selector panel, could be used for ground crew communication, in the event that the ground crew intercom was unserviceable/not used.
Mostly installed on aircraft destined for VIP service.
 
spchamp1
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RE: Light In The Landing Gear Bay

Thu Sep 16, 2010 5:32 pm

The A320's and E190's also have ground horns. They are typically only used for impatient pilots who want you to get on the headsets literally a second after the L1 door is closed. On a side note, I've also used it to get the rampers on my crew to get ready to go when repositioning A/C.
 
AA737-823
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RE: Light In The Landing Gear Bay

Sat Sep 18, 2010 10:05 pm

Quoting tristarsteve (Reply 12):
Maybe NG as well, don't work them

No, it's not- the NG has a secondary, COMPLETELY 100% REDUNDANT gear indicator system, with green/red indicator lights in the aft overhead panel.
For this reason, at many operators, 737NG wheel well lights are not NOGO items.
 
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HAWK21M
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RE: Light In The Landing Gear Bay

Wed Sep 22, 2010 9:07 am

Quoting tristarsteve (Reply 12):

On the older B737s that wheel well light was mandatory. i.e. it had to work on departure for a night flight. (Maybe NG as well, don't work them).
If the green undercarriage down indicator failed, the pilot could look through a window in the floor at two red stripes on the gear to see if they were aligned. The nose gear window is in the flight deck floor under a little flap. The main gear one is under the carpet in the cabin. There is a mark on the hatrack to show its position.
But unless the window and the mirrors are crystal clean, its hard to see anything positive.

There would be a Dome light & an Incandecent light in each WW.The Dome could be NOGO,but the NWW light could not be deffered as it was your light to indicate the Gear Down & locked marks as viewed from the Aircraft in flight.
With Aircraft that have a secondary L/G Indication,the MWW lights can be deffered.

regds
MEL.
I may not win often, but I damn well never lose!!! ;)

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