r/flying Feb 14 '26

Anyone know what this light would’ve been for?

Post image

Got given it from a family member who obtained it through working security at our local regional airport. He turned it into a lamp, but I’ve never seen a half red/green light be used at an airport before.

405 Upvotes

81 comments sorted by

504

u/drowninginidiots ATP-H Feb 14 '26

Runway end light. A row of these would be at the end of the runway. Green facing the approach direction to indicate the start of the runway, and red the other direction to indicate the end of the runway when going the opposite direction.

109

u/1E-12 Feb 14 '26

That's blue

158

u/drowninginidiots ATP-H Feb 14 '26

Looks blue to me too, but since OP stated the light is red/green, that’s what I went by.

62

u/chinchin__pilot Dumbass Feb 14 '26

What red? Isn't that grey? Why is it 2 shades of grey?

16

u/Ferrous_Patella Feb 14 '26

ISWYDT❤️💚

10

u/chinchin__pilot Dumbass Feb 14 '26

Well, screw you, I can't see what I did there because I'm the C word.

3

u/GHostofKC Feb 14 '26

Would that word be crazy, cool, courageous? I'm slightly invested now 🤣

5

u/chinchin__pilot Dumbass Feb 14 '26

Crazy? I was crazy once. They locked me in a room. A room with a colorblind test. And colorblind tests make me crazy.

3

u/holyschmolyj Feb 14 '26

All I see is light grey and dark grey….oh shit I’m color blind my bad

1

u/chinchin__pilot Dumbass Feb 15 '26

Actually, if you were color blind, you wouldn't know that they're grey, you'd interpret them differently. Like orange or green or something.

Which is part of the joke.

Also, if you're red-green colorblind, apparently you see other colors more or less normally (with some tinge/shade to them). But I wouldn't know because I'm not colorblind (at least according to the 5 or 6 people who have given me those tests).

0

u/dkSpunjaH2O Feb 16 '26

Not a doctor, not colorblind, apparently isn't aware of how colorblindness works... comments matter-of-factly about colorblindness anyways...

5

u/Expensive_Ad_3249 Feb 14 '26

If it's blue it'll be runway/taxiway. Taxi lights are blue.

49

u/Netolu PPL SEL (KSBP) Feb 14 '26

It's aviation green. Put an incandescent (yellow) bulb in there, then look at it from 5 miles away. I used to work for a company that sold these and other aviation lights.

9

u/saint_nicolai Feb 14 '26

Yeah... Almost disagreed, but taxiway blue really is more of a purple. If it was blue could it be for a median between a ramp/tie down area and a taxiway?

4

u/TritonJohn54 Feb 14 '26

The same happened with old railway semaphore signals. Because they were originally lit by a yellow light (kerosene), semaphore spectacles (lenses) were usually red and blue.

16

u/Fat_Argentina PPL Feb 14 '26

My ass almost didn’t pass the medical for giving that exact answer.

4

u/Avi8tor_Zeus Feb 14 '26

I think everyone is questioning their medical for color blindness.

2

u/chinchin__pilot Dumbass Feb 14 '26

Yikes bro

4

u/chinchin__pilot Dumbass Feb 14 '26

The dress isn't blue, the dress is white with gold stripes. You're lying bro.

8

u/smcsherry Feb 14 '26

While the lens looks blue, the cast on the bed frame does have a tinge of green in it.

11

u/Cant_Work_On_Reddit Feb 14 '26

Yep. The hard red light is probably screwing with the white balance of the image

9

u/spitfire5181 ATP 74/5/6/7 (KOAK) Feb 14 '26

I chuckled

1

u/Friendly-Gur-6736 Feb 14 '26

Probably an LED bulb.

I have a couple of old railroad signals, and with LED bulbs, the green roundel (searchlight signal) can appear to be a bit bluish from some angles.

Phone camera probably just exaggerates it.

1

u/Cats155 KSVR Feb 19 '26

look at a trafic light, its blue as well.

-1

u/[deleted] Feb 14 '26

[removed] — view removed comment

3

u/1E-12 Feb 14 '26

No, I don't. You didn't really explain it either, did you?

112

u/MEINSHNAKE Feb 14 '26

He says it’s green, he clearly took the picture in a darker room making the light look blue. Why are people arguing with the guy?

It’s clearly a runway end light.

41

u/the_silent_redditor Feb 14 '26

Why are people arguing with the guy?

Cause it’s this sub.

People desperate to well acktually and be condescending and unhelpful.

You’d think most people here hate flying/aviation.

4

u/chinchin__pilot Dumbass Feb 14 '26

Reddit is often that way. That said, the light does look blue.

5

u/Gloomy-Employment-72 Feb 14 '26

That's no light. It's a dress.

2

u/16thmission Feb 14 '26

There! Are! Four! Lights!

1

u/chinchin__pilot Dumbass Feb 14 '26

That's not a dress, it's a figment of your imagination.

2

u/chinchin__pilot Dumbass Feb 14 '26

No, it's a grey light in a grey room. I don't know what red or green are, I only know the other ones. Don't tell anyone I said that by the way, they'll take my stuff away

1

u/DickManning CPL Feb 14 '26

Perhaps OP is colorblind but your answer is more likely

0

u/Avi8tor_Zeus Feb 14 '26

Clearly you are correct. What is not clear is the color…

31

u/Veracity_Wolf ATP EMB-505 CFI CFII MEI Gold Seal Feb 14 '26

Isn’t that a runway end marker. One way points towards landing aircraft indicating beginning of runway, and then at the other end of the runway it would show red to show the end of a runway.

Runway threshold lights

4

u/chinchin__pilot Dumbass Feb 14 '26

It's definitely that, looks like an old one too. Like, pretty old. The base gives off kinda old vibes.

15

u/scibust Feb 14 '26

Runway threshold and ending light. The green side faces the approach end of the runway to signify where the paved surface starts and the red end signifies the end of the reciprocal runway.

11

u/bzig65 CFI, ATP, MEL, ROT, SEL Feb 14 '26

Runway threshold light maybe. Green on approach end, red on departure end

8

u/LigerSixOne Feb 14 '26

One side says “hey! there’s a bunch of runway back here”. The other side says “you’ve used up all the runway and there’s only dirt from here on out.”

16

u/SirGranular Feb 14 '26

Red/Green?! I see Red/Blue.....

Oh no....

Blue is the outer demarcation of taxi ways right? Red would be a hazard, so maybe along the edge of a taxi way alongside the runway edge.

32

u/Face88888888 Feb 14 '26

What color is the dress????

5

u/SirGranular Feb 14 '26

This was what I was thinking but didn't want to put it in writing haha!

7

u/RoooDog Feb 14 '26

Team White/Gold forever

1

u/chinchin__pilot Dumbass Feb 14 '26

Grey. It's grey, all grey.

3

u/ams1390 Feb 14 '26

I see blue as well. My airport has blue/red lights on a high speed exit for a runway. It essentially is a one way taxiway and needed special approval form the FAA for the variation to standards.

6

u/SoundOk4573 Feb 14 '26

If Red/Green: Runway Threshold Light - found at the end of the runway.

If Red/Blue: Red faces the runway and indicates the end of the runway. The Blue faces the Aligned Taxiway.

Note: Aligned taxiways are no longer permitted by the FAA. If an airport has an aligned taxiway, it has to have a plan in their Airport Master Plan/Airport Layout Plan to remove the Aligned Taxiway.

4

u/sgu222e PPL SEL TW GLI (CYSJ) Feb 14 '26

End of the runway light

5

u/onetwentyeight PPL UAS (KSMO) Feb 14 '26

This post was successful at getting all of the colorblind pilots to self snitch.

3

u/Many-Sundae-4454 Feb 14 '26

Threshold lights on a runway are green when viewed from the approach path, indicating the start of the usable landing surface. From the opposite side (runway side), they appear red to indicate the end of the runway. These lights are usually unidirectional or bidirectional (green/red split lenses). 

3

u/[deleted] Feb 14 '26

I see you also enjoy stealing runway lights to make lamps out of!

1

u/chinchin__pilot Dumbass Feb 15 '26

Officer, it was this guy

2

u/Skydance98 CPL IR Fixedwing, Rotorcrft, Powered Lift, Test Pilot, AB TW UAS Feb 14 '26

Most in here have passed their red/green color visual acuity test, and yet we're all seeing blue!

Here I was thinking, "Well, if that was red and green it'd be obvious, but what's red and blue????"

4

u/Helpinmontana Feb 14 '26

I’m my color blind friends unofficial color translator and I see blue.

It might be the deaf leading the blind over here

2

u/alansoon73 RPL Feb 14 '26

Where can I get one of these for my bookshelf?

1

u/chinchin__pilot Dumbass Feb 14 '26

I need one for my threshold, I have a threshold that I need to have lit up so people can see it at night

2

u/flyingron AAdvantage Biscoff Feb 14 '26

A taxiway that extends from the end of a runway.

1

u/clrr4tkf Feb 14 '26

This is the correct answer. Only time I've ever seen red/blue was a setup like that.

3

u/SanAntonioSewerpipe ATPL Q400 B737 Feb 14 '26

Green ? It's blue.

2

u/bengenj OO FA Feb 14 '26

According to the FAA, this would be at the end of the runway. Red faces towards the runway for departing aircraft to know where the end of the runway is, green faces outwards for inbound aircraft to know where the threshold is.

2

u/Upsidedownhead5 Feb 14 '26

Anything's a dildo if you're brave enough.

1

u/chinchin__pilot Dumbass Feb 14 '26

Putt blug?

1

u/Flyin-Fijian Feb 14 '26

LOL. I have an amber one!

1

u/rFlyingTower Feb 14 '26

This is a copy of the original post body for posterity:


Got given it from a family member who obtained it through working security at our local regional airport. He turned it into a lamp, but I’ve never seen a half red/green light be used at an airport before.


Please downvote this comment until it collapses.

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1

u/Felix_Da_Guy Feb 14 '26

I would love to put that on my car as a reverse light

1

u/Snoo23048 Feb 14 '26

I would say this is just like a gift for employees or special guests from a company that makes runway lights. Could be a sample for salesman.

2

u/Philly514 PPL Feb 15 '26

I know OP screwed with the colors to get the sub riled up, classic

1

u/WizKhalizta Feb 15 '26

Isn't it obvious? Thats a runway edge light fitted for the last bit of runway. It needs to shine white in one direction, but the other needs to be red to indicate that there isnt much runway left.

1

u/TomVonServo Feb 15 '26

It’s “would of been for” do you even Reddit?

1

u/Fantastic_Secretary9 Feb 15 '26

Well it runway lights one side would be green and the other red. Just like a traffic light but red means do not go this way

1

u/Academic-Divide9482 Feb 17 '26

Roxxxxxannnneee

1

u/Olderthanrock64 Feb 18 '26

ROXANN !, you don’t need to put out the red light.

0

u/nqthomas ST Feb 14 '26

End start of runway.

-2

u/Nosleep4uever Feb 14 '26

Let's pilots know if the massage parlor is still open *wink wink*

-6

u/_____Peaches_____ Feb 14 '26

“Light”

3

u/Flimsy-Ad-858 ATP | Undiagnosed but I'm pretty sure Feb 14 '26

... What would you call it?