Questions tagged [feature-identification]

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

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1answer
27 views

What is the indicated device under the tail of this B-29?

Was lucky enough to have the B-29 "Doc" flying over the house this weekend. What's the mechanism under the tail indicated by the red arrow? Tail-strike preventer? I did some searching and ...
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0answers
100 views

What are these things on the horizontal stabilizer on a Diamond DA40?

What are these things encircled on the horizontal stabilizer on the Diamond DA40? And why are they used from an aerodynamic point of view? Source: grupooneair.com
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1answer
1k views

What are the black boots on this Extra 300's prop?

I normally think of black boots on a prop as being for de-icing. However, the Extra 300 is not suitable for known-icing conditions, or even IMC flight. (It's AFM says "Only VFR flights at day are ...
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49 views

Identification of control column spade

I have a control column head similar to that used on the Spitfire and Hurricane but with two levers for cables coming up from the stick. I would like to find out what aircraft used this type. Markings ...
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2answers
1k views

What is that round antenna(?) on the bottom of a Piper Comanche?

Does anyone recognize this round object under the belly of a PA-24?
7
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1answer
179 views

What is that wing device that looks like a mini-spoiler on the CJ3?

The Cessna Citation CJ3 (model 525B) has that device circled below, what is it? Source: airplane-pictures.net I initially saw it as a mid-chord fixed spoiler-like device. As @programagor commented, ...
2
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1answer
183 views

What's this stick-like thing on the glass of C-130J? [duplicate]

Just was watching this video: C-130J Shadow Formation Landing You can see this stick-like thing on the glass of the aircraft. What's it? a sensor?
14
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1answer
2k views

What is that instrument with two knobs and what looks like range rings?

I just flew a Piper Warrior today and I got confused with the instrument shown below, it's the one above the CDI and to the right of the altimeter.
9
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1answer
450 views

What are these four tubes for in the intake for an Extra 300?

The fuel-injected engine has six cylinders, so it's not a "per-cylinder" thing nor is it related to a carburetor. P.S. That screen is the entirety of the air filter. Apparently it's meant ...
16
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1answer
3k views

What is this cylinder covered in threaded studs and what is it for?

I can't figure out what this is. It looks like each post is threaded, but why is a mystery to me. My guesses include a grounding post, a bolt/nut testing stand that's not actually in an aircraft, or ...
2
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1answer
294 views

Does F-35 flight stick have a trackball?

There is a trackball-looking thing on the side of F-35's side stick. What is this? Is this actually a trackball? There is also another round looking "button", although a bit different from ...
21
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1answer
2k views

What is the shiny stripe around the aft wing–body fairing on an A380?

Source: planespotters.net: 1, 2 Regardless of the airline, that part is always unpainted, and in the right conditions, it looks shiny. From below the plane, it wraps around the wing–body fairing. Is ...
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1answer
186 views

What is this stripe on the windshield of the Embraer E-Jet?

I noticed that there is a stripe along the upper edge of both forward windshields in the Embraer E-Jets: (cropped from Wikimedia) I tried to find a better picture, but couldn't find anything closer. ...
10
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1answer
4k views

What are the random, differently-coloured rectangular patches on the top of this Boeing 737's fuselage?

The top section of this green-painted Boeing 737's fuselage was slightly faded and I noticed a few dark-green, rectangular patches on its top. They look like patch kits on a bicycle tyre's inner tube. ...
11
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1answer
3k views

What is that yellow square to the right of the main entry door of this Lufthansa A350?

My question is: is it just part of the paint job, or does this yellow square serve a purpose? I haven't seen this square on any other airlines.
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2answers
4k views

What are these bars on an F-16's nose?

I've always wondered what the purpose of these "bars" on the nose of the F-16 (and some other military aircraft) are. Are they sensors (if so, what kind)? Are they lightning strips? I can't ...
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1answer
248 views

What is this strange thing under Tu-95 which looks like a horse-fly's eye?

I was seeing this photo and saw an strange thing under the bomber. Too much looks like a compound eye. What could be it?
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1answer
187 views

What's the name of this part of combustion chamber and what is it for?

There are two "excrescences" Near the end of diffuser of some combustion chambers. e.g. CFM56 and F101 What's the name of this part of combustion chamber and what is it for?
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88 views

What's this outlet of IAE V2500 for? [duplicate]

Anybody knows what is this outlet for and why it is designed in such way? Edit: On MD-90 didn't see such thingy
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1answer
656 views

What's this part on the wing of BAE Systems Avro 146-RJ100?

It was always a question that what's this part on the wing of BAE Systems Avro 146-RJ100: Is it kinda aerodynamic component?
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2answers
146 views

Is this new intake of Airbus and Boeing aircraft's NACA inlet?

Anybody knows the name of this intake? look at the bellow images: Why don't Airbus and Boeing use the conventional NACA inlet? Why did they invent this kind of intake? I can see some parts of these ...
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0answers
48 views

What are these two circular areas on the fuslage of Fokker 100? [duplicate]

There are two circular areas on the fuslage of Fokker 100 which are shown in the bellow image. What are those? Why are the above these two areas written "do not paint"?
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1answer
298 views

Does anyone recognise this jet engine?

sorry for the terrible quality, it's what I've got. I've not been able to find anything looking like it using google image search. It looks too detailed for a random bit of clip art. Possibly around ...
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60 views

Why do some aircraft series have an extra window? [duplicate]

Take a look at these two Boeing 717s, in some cases they have an extra window. why? Another instance. Boeing 737:
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1answer
217 views

What is this intake bottom the wing of C-5 and why is it placed there?

There are two intakes bottom the wings of C-5. What are those and why are they placed there?
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1answer
1k views

What is this hole above the intake of engines of Mil helicopters?

Almost all the helicopters designed and manufactured by Mil have a hole above the intake. e.g. What is it for? APU? Other helicopters made by this company:
4
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1answer
351 views

What are these crevices below the wing of B-52 bomber?

What are these crevices below the wing of B-52 bomber?
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3answers
3k views

What is this part which is mounted on the wing of Embraer ERJ-145?

Take a look at the yellow parts which are mounted on the wing of an Embraer ERJ-145. What is it? Two closer images: From bottom:
10
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1answer
2k views

What is this part of an aircraft (looks like a long thick pole sticking out of the back)?

On the website of Kenn Borek Air (an airline specializing in Arctic / Antarctic operations), on this page at the bottom, you can see the following picture: It looks like a long thick pole sticking ...
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2answers
3k views

What is this turbine engine panel that opens on landing?

Tonight I flew from Munich to Dortmund on an A319 and I happened to sit just above the wings and turbine on the right side. Upon landing, the turbine opened a window or panel which exposed some grid ...
17
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2answers
5k views

Are these two objects in cockpit of Antonov - AN 225 Mriya fans for air? What is their purpose?

In the above image, we can see two black objects that look like ceiling fans. This is just a reference image, but I am pretty sure that I have also seen small table fans mounted in cockpits of large ...
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1answer
4k views

What is this strut in biplane rigging, attached only to wires, not bearing any load?

A few biplanes like the Stearman have a strut parallel to the fuselage, halfway along the rigging's landing wires and flying wires, not fastened to the airframe, not bearing any obvious load. One on ...
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2answers
232 views

What is that wire connecting [duplicate]

What is that wire connecting the tail fin to the fuselage in beechcraft 1900 and so many other airplanes
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1answer
4k views

What are these Lights on the Center Column between Cockpit Windows on the A320?

I have always noticed there is what appears to be three lights on the center column, which separates the pilot and copilot window of the Airbus A320 family. From the looks, the center light is red and ...
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1answer
265 views

What is this part on the Me 262?

I have seen this part on a me 262 model kit but I don't know what it is... I've make some research on it but I find nothing! Maybe it can be radar, or a weapon? Do you know what is this? And also its ...
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6answers
8k views

What's this black rectangle painted on the side of a V-1 flying bomb?

A friend sent me a photo of the V-1 flying bomb on display at the Air Zoo in Kalamazoo. What's the black painted rectangle on the side of the fuselage? The writing isn't much help... Nicht auftreten ...
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2answers
3k views

What are these “winglets” on the roof of the 737?

I circled the parts on the fuselage in red.
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2answers
12k views

What are the bumps in the F-22 Raptor wing for?

As you can see in the picture there are several bulges or bumps in the wing that are located in the aileron and flaps. Somebody told me these are to hide the linear actuator, pushrod, and control horn....
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1answer
282 views

What are the names of the antennas which I have marked in this picture of a Boeing 737?

I have taken the picture from PMDG 737NGX Microsoft flight simulator X. I am really curious to know what this antennas are. These antennas are behind the nose gear.
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1answer
1k views

What is this thing on a FDX MD11 (MD10?)?

I assume something forward looking; not sure why there and how they got this to play nicely with radar
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1answer
150 views

What is this sheet on a Super Étendard?

What is this sheet on a Super Étendard ? As seen on
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2answers
610 views

Why does the IL-76 have a lump at the bottom of its nose?

Why does the IL-76 have this lump at the bottom of its nose? Why can't it be gotten rid of?
7
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1answer
588 views

What is this metal piece sticking up on the roof of a 182?

My CFI and I were stumped as to what the purpose of this metal piece is on the roof of a 182. I couldn't find anything from searching Cessna POHs/docs online... Any ideas? Here is a close-up:
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1answer
385 views

What is this part on a Cessna 172 engine?

Can any one tell me what this tube with the red is? This is a photo of a 1977 Cessna 172 engine. Looks like the tube is directly connected to the top of the crankshaft.
10
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1answer
389 views

What is this extension at the tip of the Supermarine Southampton's wing?

Looking at this Wikipedia image of the Supermarine Southampton flying boat, I noticed what at first looked like a small wheel. But then I thought it couldn't be, as a wheel would be pointless in a ...
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1answer
201 views

What is that sensor on the Airbus A220?

What is the that sensor in the picture?
2
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1answer
247 views

What is this long Bar/Rod on the Boeing MH-47G? [duplicate]

This MH-47G has a thick, long rod at the bottom left front. What's the purpose of this thing?
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1answer
1k views

What is this mysterious thing on the vertical stabilizer of the Boeing 707?

Have you ever seen this mysterious line-shaped thing on the vertical stabilizer of a Boeing 707 or 720? What purpose does this thing do?
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1answer
335 views

What is this little strake on Cessna 182 vertical tail?

can somebody explain what is the reason of mounting this little horizontal strake on a Cessna 182 vertical tail?
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1answer
2k views

What is the asymmetric feature on the rear of a Sukhoi Su-47?

I saw this part on the rear of the Sukhoi Su-47 Berkut, and I can see that it is asymmetric. Is it maybe for interference, or is it a take-off aid because the Su-47 is a STOL plane? What is it and ...

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