Questions tagged [terminology]

For questions about words, phrases and definitions that are specific to aviation or used in a different way in aviation.

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4
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1answer
398 views

What is “Weather and Chaff” information provided to pilots by ATC?

This one appears in an entry under "Additional Services" in the FAA Pilot/Controller Glossary and claims that ATC provides a wide range of additional services to pilots, including "...
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2answers
122 views

What is the full-form of ATA?

I was going through FCOM of A320 and came to know that FCOM chapters are called as ATAs. So first of all what is its full- form and secondly why do we call the chapters ATAs ?
11
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3answers
3k views

Why is it called “base” leg?

When flying a circuit, the leg after downwind and before final is called base. Where does this name come from?
14
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2answers
44k views

What is the origin of the term “pax”?

Pax in commercial transport is used as something like persons or passengers, in the context of counting people, e.g. 150 pax onboard. (Amadeus capture, source) I observed that in German writers tend ...
1
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1answer
509 views

What does pre/post modification mean in Airbus MPD?

What is the difference between POST MOD (with partial mod i.e SXXXX) and PRE MOD (with partial mod) in the applicability column of an Airbus MPD (Maintenance Planning Document)?
7
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1answer
262 views

How are “charter” and “passenger” flights defined in the AIDX standard?

I'd like to know the difference between these flight types in the IATA AIDX standard; specifically, for use in fuel order notifications.
5
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2answers
4k views

What is a “sidestep landing” in an instrument approach?

I have never seen a sidestep landing on an approach plate. What is a sidestep landing and when I can chose this approach?
2
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3answers
329 views

What does “inertial” refer to in “inertial reference”?

An ADIRU makes use of air data reference and inertial reference. Inertial reference calculates the heading, position, ground speed and attitude. I was wondering why is it called inertial. Is it ...
-3
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1answer
145 views

Fly a fixed wing single propeller airplane like a helicopter?

Has anyone tried to "helicopter" an airplane? And succeeded? And posted this video on the internet where I can find it? What I'm talking about with what I would call a "helicopter&...
11
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1answer
510 views

In the United States, are ultralights legally considered aircraft?

I sometimes hear it stated that in the United States, ultralight vehicles are not legally considered to be aircraft. For example, Wikipedia used to state: In the United States ultralights are ...
17
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5answers
43k views

What is the difference between slice, segment and leg?

I have heard of the terms slice, segment and leg. Since I am a newbie in travel industry, I would like to know and understand the basic differences between the three. Could someone please explain ...
0
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1answer
96 views

What is the difference between a service manual and a maintenance manual?

What is the difference between service manual and maintenance manual? Because sometimes I found one, sometimes I found another, the content is similar but not the same. What are the differences and ...
2
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2answers
96 views

What are differences between vortex, swirl, eddies and wake?

These terms seem to have the same meanings. Can anyone differentiate them?
2
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2answers
111 views

What does scheduled departure time exactly mean?

I am trying to understand the (sometimes subtle) differences between various terminologies concerning flight schedules. What I find difficult to understand is how exactly the scheduled departure time ...
2
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2answers
1k views

What is the FAA definition of “takeoff” and “landing”?

This question is in the context of commercial flights with passengers. What is the definition of "takeoff" and "landing" phases? Does it include taxi? Is it from lift-off for takeoff? and touchdown ...
11
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3answers
1k views

How are the wings of a mono- bi- or triplane referred to with regard to position?

Apologies if this is an elementary question. If I look at a diagram for parts of a plane, they don't distinguish verbally between left/right. If I try Googling for, say, "right wing" or &...
2
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2answers
134 views

Why are flight instructors in the US called CFIs?

I live in EASA-land (Europe), here we call our flight instructors simply that, "FIs". That they hold an instructors certificate is simply implied. Why are flight instructors in FAA-land (US) ...
2
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2answers
200 views

Is there a standard term for “3D groundspeed”?

Does the term "groundspeed" always refer only to the magnitude of the horizontal component of an aircraft's velocity vector with respect to the earth, or does it sometimes include the ...
18
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8answers
4k views

What would be a technical or slang term for 'in the air'?

I'm writing a sci-fi story involving aircraft and space craft. I'm struggling to get the terminology right for referring to a pilot being 'in the air' either on a mission or a training exercise. I ...
5
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2answers
368 views

What, if any, would be the most correct term for the aerodynamic flight control surfaces of SpaceX's Starship?

SpaceX's Starship uses a unique flight control scheme during descent that I have not seen anywhere except with skydivers: it falls straight down belly-first using four aerodynamic control surfaces at ...
38
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3answers
81k views

What is the difference between “flight level” and “altitude”?

I have seen references to "FL180" and "FL300", and I know that they stand for Flight Level 180 and Flight Level 300. I've also seen references to "an altitude of 18000ft" or "an altitude of 30000ft". ...
3
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1answer
562 views

What is the origin of the “Pickle” switch for release of ordnance?

I am looking for proper proof of the theory that it is called so due to the Norden sight of the B17, which was said to assist the bomber in putting a bomb into a pickle jar, and hence it stuck.
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3answers
933 views

Why do pilots refer to the Flight Service Stations as “Radio” in the the United States?

When using an aircraft radio to call a Flight Service Station ("FSS"), why do pilots refer to them as "radio?" I understand calling control towers "tower", ground control "ground", Air Route Traffic ...
12
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1answer
3k views

What exactly are “suitcase handles” in a cockpit?

I was watching Seconds From Disaster about Alaska Airlines 261 (the one with the horizontal stabilizer issue) and at one point the copilot tells the pilot to "try the suitcase handles". Is ...
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5answers
8k views

What does it mean when autoland is fail passive / fail operational?

The below explanation is what I've got from the internet about fail passive and fail operational: Fail operational - Where you have 3 autopilots engaged, such that any single failure will result in ...
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2answers
46 views

Degree of motion terminology for special aviation movements

I perfectly understand yaw, pitch and roll. I'm wondering what a few special terms are for other unusual movements, such as those executed by a helicopter, drone or even perhaps something like a ...
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1answer
57 views

What classification of aerial vehicle would a manned quadcopter or octocopter be?

US here, if it makes a difference (w.r.t. FAA regulation, etc.). There's a new upcoming class of aerial vehicles, similar to drones, however they are gigantic and they are manned -- that is, manned (...
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0answers
51 views

On the B737 FCTM, what are the limit values for strong and gust definitions?

There are definitions called as "Gusty and Strong Crosswind Condition" related to takeoff thrust setting choice and "Strong Crosswind" in touchdown in crab part of B737NG FCTM. I ...
6
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1answer
245 views

What use was there for Boeing to include customer numbers in their aircraft model names, and why did they end this practice?

Inspired by this question (thanks Hot Network Questions!). The tl;dr is that Boeing included a unique numeric model number designation, referring to the customer that had purchased a particular plane, ...
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2answers
3k views

Does a Boeing 747-830 exist and if it does, is there any difference to a 747-8 (748)

Two years ago I've uploaded a video of the Lufthansas Boeing 747 "D-ABYA" to Youtube. I am currently receiving some angry comments on that video because the title reads "747-830 with ...
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1answer
108 views

What does ''Reduced Coordination Airspace'' mean?

What does ''Reduced Coordination Airspace'' mean? There is a definition in here, page 4 bottom image.
5
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2answers
289 views

“Total time away from gate”, “Longest time away from gate” - what does this mean?

In the US, airlines or airports report two figures regarding canceled flights: the total time away from the gate and the single longest time away from the gate. and regarding diverted flights: ...
2
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3answers
163 views

What is the correct term for the type of performance chart where curved lines are followed?

What is the correct term for the type of performance chart where, from a starting location, curved lines are followed to various reference points to eventually find a solution? For a specific example, ...
47
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3answers
171k views

What are the differences between Bearing vs Course vs Direction vs Heading vs Track?

This answer from English.SE does not focus on aviation, and does not explain 'Track'. In basic, simple English, would you please compare and contrast all 5 terms in my question's title? The ...
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2answers
2k views

From an ATC perspective, what is an “arrival gate”?

I have seen reference to ATC assigned "arrival gates". As a passenger, an "arrival gate" is something like B12 or ...
1
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1answer
174 views

Does this web page really correctly depict the angle that is called “incidence” in the French language in the aviation context?

Does this web page really correctly depict the most common usage of the term "incidence" in the French language in the aviation context, in the context of speaking of an entire aircraft and not just ...
3
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1answer
118 views

What is the difference between a spin and an uncontrolled roll in an high speed dive?

A comment I had on another (now deleted) question states that Air china 006 didn't spin. For me it was a spin (unwanted roll due to asymmetrical stall). The comment states it was "it was a slow ...
19
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3answers
21k views

What is the difference between a fix, a waypoint and an intersection?

It seems these terms are used interchangeably. Are they the same thing? Do they all refer to the points in space that are given 5-letter names?
15
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6answers
14k views

Are “Tally-ho” and “no joy” acceptable ATC terms for civil operations?

I keep meaning to ask this question. I heard "Tally-ho" used for the first time by a pilot on Liveatc.net. I know these are pretty standard phrases in military aviation but I wondered if civil pilots ...
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6answers
6k views

How does bank angle differ from roll angle with respect to stability in fixed-wing aircraft?

I would like a clarification on bank angle and how its different from roll angle with respect to to fixed wing aircraft. It is my understanding that the bank angle is a result of rotating the aircraft ...
5
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2answers
890 views

What is the standard date format used in aviation?

As English is the standard language used in aviation and Zulu/UTC time is used as standard too or at least between pilots to calculate flight time and fuel. Is there any standard date format used in ...
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2answers
243 views

What is the meaning of “transition area” as used by the FAA? Has the meaning changed over time since the term was introduced?

What is the meaning of "transition area" as used by the FAA? Does it currently have a specific meaning? Does the FAA still use the term at all? Has the meaning changed over time since the term was ...
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6answers
5k views

What exactly is a “coordinated” turn?

I am wondering what turn coordination really means and what makes a turn uncoordinated? I know that when the turn is coordinated, there is no slip and skid, an aircraft is flying a perfect circle ...
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4answers
680 views

How do STOVL and V/STOL aircraft differ?

Wikipedia's page for STOVL begins with A short take-off and vertical landing aircraft (STOVL aircraft) is a fixed-wing aircraft that is able to take off from a short runway (or take off vertically ...
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2answers
2k views

What are the correct names for the two faces of an airfoil?

When representing a wing airfoil, often the low pressure is on the top side and the lift is positive: In this case upper and lower sides are enough to understand the role of the surfaces, But this is ...
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6answers
5k views

What is the difference between a glider and a sailplane?

The words "glider" and "sailplane" seem to refer to similar or the same type of aircraft. In particular, the Wikipedia articles "Glider (aircraft)" and "Glider (sailplane)" seem to be describing the ...
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10answers
54k views

What's the difference between a balked landing and a go-around?

Is there a difference between a balked landing and a go-around? If there is, what exactly is a balked landing?
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1answer
4k views

What does “running torque” mean?

I would like to know the meaning of the phrase and especially the meaning of "running torque": Torque the inner plug to between 75 and 85lbf.in. Loosen half a turn and RETORQUE to between 15 and ...
9
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3answers
2k views

What does “Raven” [phonetic] means when used by ATC?

What is the meaning of "Raven" [phonetic] heard in use at Reagan National Airport? Most recently heard: The ATC will say "proceed direct raven" or "direct raven maintain" whatever altitude; or "...
8
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3answers
4k views

What is the purpose of classifying fighters?

Fighters are classified by generation, as explained in this answer. Given this Wikipedia sum up, some fighters are not clearly in a defined generation, especially for 4th generation subclasses. Thus ...

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