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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7
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1answer
2k views

In a Practice Forced Landing (PFL), what are Low Key and High Key and how are their locations determined?

Please explain what are "low key" and "high key" in practice forced landings? Are they any particular locations with respect to the airfield? Are they the same for every aircraft? Will they change ...
10
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1answer
309 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 ...
0
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1answer
61 views

Is the National Aviation Authority the same as the Civil Aviation Authority?

Are the NAA (National aviation authority) and the CAA (Civil aviation authority) the same organisation? According Wikipedia it looks like they are the same organisation.
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1answer
2k views

What is the difference between microburst and windshear?

When I read about these weather phenomena, I find that both of them depict the same thing, and have the same actions to avoid. So why are they differentiated? http://www.myairlineflight.com/windshear....
5
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1answer
731 views

What is the meaning of HOT-1, HOT-2, CAM, etc., in cockpit voice recorder transcripts?

When reading the the written down recordings of CVR like here, for instance, it is common to see abbreviations like HOT-1, HOT-2 or CAM. I guess that CVR records multiple channels and the codes ...
4
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1answer
602 views

What are the fins near the tail of a helicopter called?

My young sons are very enthusiastic about helicopters and I am repeatedly asked to name parts of their model aircraft. I would like to do so correctly, but my research has not always given definitive ...
1
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1answer
64 views

How to call a cartesian (END) coordinate system, that is referenced in surrounding air?

I'm looking for the correct/usual terminology for a coordinate system, that is moving with the wind. I do calculations in a Cartesian East-North-Down (END) system. When taking wind into account I'd ...
1
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1answer
313 views

What are the radius of containment (Rc) and horizontal protection limit (HPL) and how are they related to Type Code?

In ICAO Document 9871 (Technical Provisions for Mode S Services and Extended Squitter) page 30 they have mentioned it in the form of a table. But they haven't explained HPL and Rc in detail.
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1answer
135 views

AN-hedral or Cath-hedral? [closed]

We normally hear of wing geometry with dihedral. Most commonly, when speaking of a wing with negative dihedral, we hear the term anhedral. As I recall the prefix "an" indicates "without". On a few ...
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3answers
2k views

Definition of “Rotation Speed” vs “Lift Off Speed” vs “Fly Off Speed”

Is rotation speed and lift-off speed ever used interchangeably? (AMENDED Question) Is lift off speed and fly off speed the same? (See supplemental info below) I thought I clearly understood the ...
2
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2answers
2k views

Why bother tracking TSN after an overhaul?

I've noticed that mechanics often like to keep track of "time-since-new" (TSN) on components that have already been overhauled. What would TSN matter when the component is tracked by TSO for ...
13
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4answers
3k views

What is the official term for a gas / petrol station for planes?

I'm talking specifically about small airports where they don't have the fancy equipment and they actually have to go to a specific place to refuel for example cars go to gas station / petrol station ...
1
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1answer
270 views

What is a CRM and what does it stand for? [duplicate]

I've always wanted to ask a pilot what a CRM was. Of course, I didn't really get lots of chances to ask pilots, no I thought of just asking here. What is a CRM and what does it stand for?
4
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0answers
198 views

Are the terms “Aircraft Version” and “Aircraft Variant” synonyms?

Related to the answer of the following question: How are evolution and variants of aircraft considered by certification authorities? Are the terms "Aircraft Version" and "Aircraft Variant" synonyms? ...
7
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2answers
382 views

What does “leave clear on its left” mean in UK regulations relating to collision avoidance on non-runway landings?

This doesn't seem to be plain English, could someone explain this with a simple example for me please? I'm not sure what 'Leave clear on it's left' means, and it's not clear whether the subject of the ...
10
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1answer
2k views

Is the term “guinea pig” defined in the Pilot/Controller Glossary?

Is the term "guinea pig" now or was it previously defined in the Pilot/Controller Glossary? If it's not defined in the Pilot/Controller Glossary, maybe it's in some other publication. I was flying ...
4
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3answers
2k views

Is there a difference between a chart and map?

Does the use or meaning of "chart" or "map" vary worldwide? Is there a difference between a chart and map?
2
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1answer
121 views

“right traffic pattern” vs. “right-hand traffic pattern”

Is it officially called "right traffic pattern" or "right hand traffic pattern"? I'm mostly interested in EASA terminology, but also FAA / other areas of the world. Background: After I always said "...
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1answer
137 views

What are heat detection sensors and how can they cause a speed error?

From this news article on Saratov Airlines Flight 703: A report handed down by Russian investigators has blamed human error for the crash of Saratov flight 703, saying the pilots didn’t switch on ...
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0answers
83 views

What does “lower flatness” mean in airfoil terminology?

What does lower flatness mean in these parameters of a Glenn Martin airfoil?
3
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1answer
269 views

What exactly are “clipped” wings?

What exactly does "clipped wing" mean? Been having a rather heated debate. My understanding is that clipped means the tips were removed after manufacture. The other party claims that if it was ...
3
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1answer
620 views

What does leading edge radius mean?

What does leading edge radius mean amongst these parameters of a st cyr 24 airfoil?
5
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2answers
467 views

What qualifies as a “takeoff” and “landing” in currency requirements?

I just met my night-time currency requirements at KONT. Landing and taking off from a 12000 foot runway in a Cessna 152 got me to thinking (always dangerous, I know). There's more than enough room ...
4
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2answers
1k views

What is the difference between a vertical stabilizer and a rudder?

I saw two questions on locating these surfaces ahead of CG: Vertical Stabilizer and Rudder How are these the same or different control surfaces?
4
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2answers
456 views

Why are some Tomahawk missiles' nose duck-nose shaped?

Why there is a duck-like shape in this Tomahawk missile's nose? I see this shape in most Tomahawk images; however, not every Tomahawk's nose is shaped like this. If it is an aerodynamic feature, ...
3
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2answers
507 views

What is a “slender delta” wing?

I am curious about delta wings. I read some articles and found the term "slender delta". Please help me to understand this term.
2
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1answer
138 views

What does “RA” mean in the FAA Terminal Constraints?

I'm trying to interpret the Terminal Constraints listed on the Operations Plan Advisory (https://www.fly.faa.gov/adv/adv_spt.jsp). RA seems to be used in the context of weather, but I haven't been ...
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2answers
867 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 ...
0
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1answer
277 views

Gage or Gauge? Which is correct in the aviation industry? [closed]

Gage or Gauge? Some official aviation sources seem to use the spelling "gage" whether referencing cockpit instruments or aircraft maintenance tooling. However, more broad English sources note that "...
40
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2answers
5k views

What does the letter G mean in a runway identifier?

Boulder Municipal Airport (KBDU) has runways 8 / 26 and also runways 8G / 26G. What is the significance of the letter G following the runway numbers?
2
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2answers
373 views

What is the relationship between the terms “airprox” and “near mid-air collision”?

Do the terms "Airprox" and "Near mid-air collision" mean the same? If not what is the difference between them?
2
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1answer
255 views

What is Arctic Control Area (ACA)?

I saw that in Jeppesen airway manual but I didn't find a definition for it. What is that? How to establish it? Who establishes it and for what reason?
7
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5answers
873 views

Is it incorrect to refer to a C-130 as a jet?

In this article by CNN, the C-130 involved in the unfortunate crash in Savannah, GA is referred to as a "jet." Is this considered proper usage? I'm not looking for public opinion here but official ...
9
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2answers
3k views

What does the FAA mean by “Make and Model” of aircraft?

Short Version: How does the FAA define the terms "make" and "model" in regulatory documents, particularly in the context of referring to pilot experience in aircraft? Long Version In 14 CFR 135—and ...
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3answers
242 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 ...
10
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1answer
314 views

What is the english term for “vol en ficelle”?

From what I have read online and understood, "vol en ficelle" is basically a low altitude flight preparation method that requires calculating a set of altitudes to be followed in order not to crash. ...
6
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1answer
424 views

Why do we say “climb” and not “ascend”?

The term for moving to a lower altitude is "descending." Why, then, is the term for moving to a higher altitude "climbing" and not "ascending"? The latter goes better with the term "descending." Does ...
2
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2answers
276 views

Does the reference for AGL include obstacles?

Let's say a plane flies 10m above some trees, that themselves are 10m above the underlying ground. Would that be 10m or 20m AGL? Or, in more abstract terms: What exactly is the reference point for ...
1
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1answer
1k views

What's the difference between “HAND OFF” and “HAND OVER”?

I think "HAND OVER" is a whole process of transfering radar idenrification between 2 controllers, and "HAND OFF" is a term used by the transfering controller(not receiving controller) when doing HAND ...
23
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4answers
16k views

What is it called when an airplane has to circle because it can't land?

Sometimes, a plane is required to circle around an airport repeatedly because for whatever reason, it is not able or permitted to land just yet. This state in which a plane is stuck in the air in ...
3
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1answer
593 views

Why is the Departure leg of the traffic pattern being mistaught as Upwind?

I hear a LOT of newer pilots and CFI's erroneously referring to the Departure leg of the traffic pattern as the Upwind. Ref. A.I.M. Sec 4-3-2. Actually had a Tower controller tell me "I'll call your ...
2
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4answers
150 views

Is there a generic term for origin and destination seen from an airport point of view?

I am trying to create a program that gives you the departures or the arrivals from a given airport. Thus, in the software code, I would like to refer to both origin...
0
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1answer
323 views

Is a pilot responsible for CTAF announcements in this scenario? [closed]

A Cessna 525 Citation Jet is coming in to land and a single-engine Cessna 150 is taking off at a small airport with no ATC. The Cessna 150 stays in continued radio contact and the Cessna 525 Citation ...
0
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2answers
200 views

What is the name of the system that replaced stairs for disembarking aircraft?

Back in the day, or in old airports, or airports that have not upgraded their systems, passengers disembarked in aircraft using stairs, through rain and or snow and extreme weather, sometimes having ...
3
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1answer
2k views

What's the difference between aquaplane and hydroplane?

If one reads through 10 articles describing a plane which overran a contaminated runway, the term aquaplane will be used 9 times and the term hydroplane once (and on that one time there will be a ...
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2answers
160 views

Are there FAA rules about changing an airport name from Municipal to Regional?

Are there any FAA requirements to be met or stipulations for an airport to change its name from Municipal to Regional?
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7answers
4k views

What is it called when you roll without yawing or pitching?

My instructor made me do an exercise that consists of banking the sailplane left and right around 30 degrees without moving from the axis. I need to aim for a specific point, and start with the ...
16
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2answers
17k views

What is the history of “Joker” and “Bingo” fuel terms?

Why do we use, in military aircraft, the words "Joker" and "Bingo" to indicate the fuel status of the aircraft? What is the history of these two terms?
22
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3answers
5k views

What exactly is the meaning of “detent” in aviation?

I come across it in many different situations e.g. "settings changed to flight detent" or "landing altitude changes at first detent". There are other scenarios which I came across in the past, but I ...
1
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1answer
2k views

What is a “round-robin flight”, in layman's terms?

I'm struggling to find a sufficient explanation of a round-robin flight, as it pertains to ATC. Can someone explain, in layman's terms, what it is and the lifecycle of a round-robin flight? Graphic ...