Questions tagged [feature-identification]

For questions about identifying a feature or design on an aircraft.

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0answers
159 views

What is this door below the lavatory? [duplicate]

What is this door below the lavatory of this airplane? Other aircraft have similar doors near the rear lavatory?
6
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1answer
1k views

What is this button (pressed during approach) on the Airbus A320?

I was watching a YouTube video of a cobalt air a320 landing and I seen as he was about 2000 ft AGL he pressed a button on his right hand side just beside the Navigation display. The button illuminated ...
6
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1answer
283 views

What does the letter D on the underside of the wing stand for?

Below is a picture of the Junkers F.13. What does the letter D on the underside of the wing stand for? (Image Source)
15
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1answer
2k views

What is this pipe on the tail of this helicopter?

In this picture of a CH-53 you can see a pipe or rail on the tail section of the aircraft. What is that?
35
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1answer
8k views

What is the strange object on 737-800 exterior, on the aft right side?

I was unable to locate this on a "real life" picture of the aircraft, so have attached an image from my simulator. What is the function/purpose of this object on the exterior of the 738? It seems like ...
4
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1answer
627 views

What are these parts on Super Etendard?

I'm currently working on modelling a Super Etendard and just have a few questions on what are some small parts. First of all, any ideas what this tube thing is on the right side of the exhaust? My ...
6
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1answer
344 views

What is this odd large sign near Aalborg airport/millitary airport?

I have recently moved to Aalborg in denmark and while riding my bike each morning I cycle past these large signs pointing out into the water. I assume they are for aircraft at the nearby millitary/...
13
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2answers
2k views

What engine are these fan blades from?

I bought these from a metal scrapper and paid about $30.00 total figuring they're worth more than that in cool factor. Problem is they aren't nearly as cool if I can't figure out what engine (and ...
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0answers
206 views

Can you identify this (electrical) part?

I've been given an assignment regarding this very small piece, but my professor says he has no information about it other than: It's an electrical insulator of sorts Is used in an aeronautical ...
45
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1answer
7k views

What does this plus (cross) sign on this electrical panel mean?

I'm looking at a picture of the electrical panel of a Phenom 100 and on it I see a + sign, does anyone have any ideas as to what it's supposed to mean?
12
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1answer
730 views

What is this “Micro T-tail” on the F-102?

I just noticed this unusual thing on the F-102 Delta Dagger. It looks like a micro T-tail. What is it actually, and what is its purpose?
21
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1answer
1k views

Why did some Caravelles have a very long dorsal fin?

(Source) Why did some Sud Aviation Caravelles have a very long dorsal fin stretching half the fuselage? Initially I thought it's to keep the fin low to fit in existing hangars as a selling point, ...
6
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1answer
477 views

KC-130: What are the four tanks/tube on the wings in between the engines used for?

On the KC-130, what are the 4 tanks/tube on the wings in between the engines used for? I've seen them in photos but without explanation. I cannot find any mention of them whatsoever. If not storage ...
2
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1answer
1k views

What is the purpose of a small wing near the cockpit on the front of some planes?

I saw a plane leaving Luton Airport that I have never seen before. It seemed to have an extra small rectangular wing near the front of the plane. What is it?
30
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1answer
4k views

What does this black triangle placard on board an A320 denote?

Just out of interest whilst travelling aboard a British Airways A320-232 G-MIDT on the 9.45 BA shuttle service (LGW-GLA) in seat 10F I noticed a placard above the window of seat 9F. Given this seat ...
41
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1answer
2k views

Can experts identify the model using this part (FOD prevention purposes)?

We found this part of an aircraft recently and, in order to improve the safety levels at our airport, we would like to know what possible aircraft model (or models) are compatible with this cover so ...
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0answers
120 views

What are these holes at the right front of the ATR72? [duplicate]

The ATR-72 has these 3 holes at the right front of the fuselage. They are marked as Captain, F/O and StandBy. It says do not obstruct, and the area inside the red lines must be smooth and clean. What ...
5
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1answer
835 views

What are these teardrop shaped thingamabobs on the bottom of the Panavia Tornado?

What are these two teardrop shaped thingamabobs on the bottom of the Panavia tornado? They could be hardpoints but I haven't found any photos where anything would have been mounted there. They don't ...
3
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1answer
890 views

What are the “panels” on the wingtips of the Panavia Tornado?

I am wondering about the purpose of the panel marked with the number 156 in this picture: The same black panel can be seen on the wingtips here: And also here: What purpose does this panel serve? ...
6
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2answers
680 views

What is the round thing on the tip of an MD-90 wing?

I like to pretend I know about airplanes, but have always wondered what the round things on the tip of MD-90 wings are. Here is an image of what I am talking about: To be clear, my question is what ...
41
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2answers
8k views

What are these five indicators at the front of the 737 passenger cabin?

As a passenger I noticed set of five indicators on ceiling at the front of the 737 passenger cabin. They are: red, yellow (or white), blue, white, red. Red ones seem to be coupled together (what ...
15
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2answers
1k views

What is this nose cowl mounted display?

(YouTube) A crop duster's nose mounted display. It looks like a poor man's HUD to keep the display and the outside view at roughly the same focus distance, but what is its function?
9
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1answer
668 views

What are the evenly-spaced “bumps” on Bell X-1 tailplane?

The tailplane of the Bell X-1 had four evenly-spaced "bumps" on each side--what was their purpose? (Screen shot from The Right Stuff.) Another image If they're hinges for the elevators, then how ...
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0answers
197 views

What is this “hole” in the A350 fuselage? [duplicate]

As usual, I was looking at pictures of planes flying around me. And then I noticed a weird hole in this Singapore Airlines A350 fuselage: Source Registration number of this plane is 9V-SMD. ...
11
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2answers
3k views

What is this on the starboard engine of the Dash 8?

On the inside of the starboard engine of the Bombardier Dash 8 Q400 there is a small aerofoil shaped object* protruding from the casing. There also appears to be pipes protruding from the end of it. ...
13
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5answers
5k views

What is this ring-shaped device behind this DC-8's jet engine?

What is this ring-shaped device behind this Douglas DC-8's jet engine? (YouTube)
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2answers
252 views

What are these vertical slats under the wings of the Be-200? [duplicate]

This is a photo of the Be-200, an amphibious aircraft, taking from a youtube video. I would like to know what are all those vertical slats underneath the wings? What is their purpose? To me they seem ...
3
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1answer
445 views

What is this in the window? [duplicate]

Every time I have flown and sat in a window seat, I have noticed this small tube at the base of the window. It looks like it might be either metal or a small air pocket, but I'm not sure. I've been ...
9
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1answer
4k views

What is the function of the protruding outlet on the Trent XWB?

Original by Bernd Sieker from Germany (Trent XWB) [CC BY-SA 2.0], via Wikimedia Commons Above is a photo of the Rolls-Royce Trent XWB highlighting the aft facing outlet in question. In a video for ...
7
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2answers
4k views

What is the crank on the ceiling of this aircraft?

What is the crank the pilot is operating above his head? Also what type of aircraft is this? image source
18
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1answer
4k views

What is this device on the nose of a Bombardier Global 6000?

What is the circled object? (jetphotos.net)
21
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2answers
6k views

What is this 'ball' in front of the cockpit of some fighters, e.g., an Su-57?

What is the lump/ball thing visible below and to the left of the canopy in this image of a PAK FA (which became the Sukhoi Su-57), and what is it for? It's also seen on other fighters. Image source
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2answers
2k views

What are these two tail elements of the Avro RJ100?

What are these two tail-side elements of British Aerospace Avro RJ100 and what is their function: Photo source: Eric Verplanken, jetphotos.net.
12
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1answer
3k views

What are these spinning discs next to the throttle of the Boeing P-8 Poseidon?

The source video can be found here and the GIF is from 0:21 onwards. What are those 2 spinning things next to the throttle ?
3
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1answer
758 views

What are these diagonal devices above the leading edge of the V-22 Osprey's wing?

The Osprey has some kind of aerodynamic devices sticking up along the top of the leading edge. This picture from the Wikipedia page of the wings rotated shows them against its silhouette:- Public ...
8
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1answer
1k views

What is this display on the 737 Classic?

Source: YouTube I noticed that display (yellow circle) between the two CDUs. What is it for? It is not a default installation on the 737-3/4/500. It looks like a Navigation Display/MFD, but why have ...
6
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2answers
2k views

What is this tube-like thing protruding from under an A330's wing?

I took a flight for a business travel and I saw something new for me on the wing. I highlighted that part in a red circle in the picture below. The aircraft is an Airbus A330-200. What is it and its ...
14
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1answer
1k views

What are those things on the B747 engine pylons?

I noticed some dots and lines on the Boeing 747 engine pylons. What are they? The above image is as seen in this video at 2:18.
12
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4answers
4k views

What are these grilles in the passenger cabin of this 787?

Below the windows, ahead of the seat, there are small grilles. Look: Source: Airliners.net What are those for?
47
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1answer
13k views

What is this hatch above the cockpit of a 747?

There is a little door on the upper deck above the cockpit: Source: Airliners.net, (modified to indicate location of hatch). What is that door? What is its purpose?
15
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1answer
1k views

What is this object on an MD-11?

There is something above the engine on the tail of this MD-11: What is that? Source
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1answer
2k views

What is this protrusion on the door?

There's something below the door on almost every commercial aircraft. What is inside that box? The protrusion can be seen from the interior of the aircraft. Source
5
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1answer
2k views

What is this metal plate below the door?

What is this metal plate for? (source) You can also see it here: (source) Is found on many aircraft so what is that piece of metal right there?
7
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3answers
1k views

What is this device below the door of a 737 (and other aircraft)?

The other day I made a question about the External Power Hatch. Now I would want to know what's that hole below the door.
18
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2answers
6k views

What's this hole on the ATR-72?

There is a hole on the belly fairing circled in yellow. I guess is an air intake but I tried searching some info and couldn't find anything. Source
14
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1answer
2k views

What are the tube shaped structures on the back of the fuselage of this 737?

A previous question asked what the little metal plates between the horizontal and vertical stabilizer were (they are vortex generators), however I am much more interested in what the gray tube shaped ...
31
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2answers
18k views

What is this on top of the Air Force One?

Clarification: It wasn't Air Force One that visited Switzerland, it was the 747-200 E4 carrying Ashton Carter. Source What is this thing on top of the plane (In red circle): On other "Air Force One" ...
13
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1answer
1k views

What are the circles/holes ahead of the wing of an MD-82?

In the picture below I noticed there are three circles or holes of some kind ahead of the wing, what are those? (airliners.net)
15
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1answer
3k views

What is this device protruding from the rear of this 787?

While looking at the photos from this question I noticed a small protrusion from the side of the plane. You can see it in the photo: and in the diagram from l@aeroalias answer: In the diagram it ...
8
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3answers
2k views

What are these holes in the engine inlet?

In the next picture can be seen within the housing, near the inlet: