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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2
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1answer
415 views

Is there a comprehensive list of IFR terms with definitions?

Is there a comprehensive list of IFR terms with definitions easily available? I am trying to make some flash cards for study
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2answers
164 views

Fuel price actually used in the industry [closed]

I know it's a bit off-topic but I guess some of the terminology used in the aircraft community is the same as in marine transportation. I know that both aircraft and marine vessels use fuel. But if I'...
2
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1answer
95 views

What does “Controlling Object” mean in FAA documentation?

I was examining FAA's legacy files, which contain information for various airspace elements, and I noticed that there is a field in the airport layout file called "Controlling Object", for both base ...
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2answers
209 views

What is the difference between an engine “shut down”, “cut-off” and “cut down”?

Explain please for non-native speakers the difference between these engine (jet or piston) terms: shut down cut-off cut down I'm studying at a civil aviation university to become a pilot and a ...
2
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1answer
133 views

What is an “aeronautically qualified witness”?

Many older NTSB AARs, in their history-of-flight-and/or-accident-sequence sections, make mention of observations by an “aeronautically qualified witness” or witnesses, without any further explanation ...
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2answers
157 views

What do compressor/turbine stages mean, and why we need a different number of stages?

I am new to aviation. I realize that LP (Low Pressure) and HP (High Pressure) compressors/turbines have a various number of stages. What do stages mean? What is the reason to have a different number ...
2
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1answer
136 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
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 ...
2
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1answer
968 views

What is situational awareness and why is it important?

What is the definition of situational awareness? In which phase of flight is situational awareness the lowest, and why?
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1answer
649 views

What is the difference between landing weight and end-of-mission weight?

Raymer says: Landing is much like taking off, only backwards!....Note that the aircraft weight for landing analysis is specified in the design requirements, and ranges from the takeoff value to ...
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1answer
84 views

What do “azimuth window” and “compass switch” refer to in this accident report?

I recently read the accident report on BEA 548, but I'm unsure of some technical terms used on p. 4 of the report (p. 14 of the linked PDF): Apart from the probability that in the particular ...
2
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1answer
105 views

What date and time definition is used for the second leg of a flight?

Let's take flight BA0015, from London to Syndney, via Singapore. This is data from FlightStats. The first leg has this data: ...
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1answer
252 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?
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1answer
790 views

Is “passenger loading bridge” a synonym to “contact stand”?

In a master plan of an international airport, which is already approved by the client, I face some confusion between the terminology of the PLB and the contact stand. Sometimes they're mentioned just ...
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1answer
145 views

Where to find comprehensive description of Special Use Airspaces (SUAs)? [closed]

Can you suggest me some document or website where I can learn about Special Use Airspaces? My goal is to understand the following topics: SUA definition Types of SUAs SUA pubblication SUA creation ...
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2answers
2k views

What is the difference between a nautical mile and a statute mile? And what is a knot?

What is the difference between a "nautical mile" and a "statute mile?" And what is a "knot?"
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6answers
249 views

Why is a reduction in lift called 'drag'?

Induced drag is high pressure air 'leaking' to the upper part of the wing (low pressure zone) creating a vortex which means the area of the wing tip with the vortex can't create lift. Drag on the ...
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3answers
239 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 ...
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2answers
1k views

What's the technical name of the side window on Boeing and on Embraer?

On Airbus, the window beside the Captain and the First Officer has the technical name of SIDE WINDOW. What's the name on other aircraft, or they have the same specification?
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1answer
152 views

What is an “unsafe airline”? [closed]

Question: Is there any internationally accepted definition for what an "unsafe airline" is based on objective criteria (e.g. fatalities per million passengers) ? Or is there an international standard ...
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1answer
323 views

If an aircraft cannot fly above 300ft, is it an aircraft?

I saw a question here that inspired one of my own. If an larger, person carrying aircraft, say some sort of hovercraft, could not fly above 300 ft would it be allowed to fly? Here in Australia, 300ft ...
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3answers
169 views

Is “wingman” strictly a military term?

Does it have to be a potential combat situation for a pilot flying on another's wing to be called a wingman. If two aircraft are being flown in formation to a destination simply for the purpose of ...
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2answers
145 views

What is the real difference between aerospace and aeronautical?

I see people using these two words interchangeably. But I feel there is a huge difference between the both.
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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 ...
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1answer
269 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?
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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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2answers
855 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 ...
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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 ...
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1answer
457 views

What is the meaning of segment in MTRs?

Military Training Routes (MTRs) with no segment above 1,500' AGL shall be identified by four number characters (IR1206/VR1207) MTRs that include one or more segments above 1,500' AGL shall be ...
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2answers
151 views

What exactly rotates along the lateral axis? Is 'rotate' mathematically correct?

Researching the etymology of 'rotate' (that OED lacks!), I chanced on Anas Maaz's Quora answer: What many does not know is 'rotate' is just not a fancy word, but it involves a real physical ...
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1answer
114 views

What's the difference between 'modification' and 'corrective action' in an AD or SB?

For example Modification of an airplane in accordance with the instructions of the specific SB as specified in Table 1 of this AD, as applicable...
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1answer
99 views

What is the meaning of “regular pitch” when applied to a propeller?

I am looking at parameters of a propeller that looks like this: 3 blade xx inch diameter (regular pitch) What does "regular pitch" mean?
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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....
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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 ...
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3answers
4k views

What is the exact definition of Taxi Time?

I found some definitions on the web, but they weren't same. Some resources mentioned it is sum of the times the aircraft is moving on the ground with its own engines. Some defined it as the time ...
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1answer
173 views

What is the name for a flap that increases the wing's area but not its camber?

Flaps are high-lift devices mounted to the rear portion of an aircraft's wing. Some types of flaps increase lift by increasing the wing's camber, or, at least, that of its lower surface (plain flaps, ...
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1answer
194 views

Why is it common to speak of “Concorde” rather than “the Concorde”?

Suppose you researching a book on the history of Boeing B-17. Suppose you researching a book on the history of the Boeing B-17. Which of those sentences sounds more complete and correct? OK, so ...
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1answer
310 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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1answer
99 views

Aviation terminology for 'in the field' [duplicate]

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 field' either on a mission or a training exercise. I ...
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1answer
2k views

What are ARTCC, RCO and FSS and what are differences?

I am confusing what ARTCC, RCO and FSS. and also what do they do? Do they control air traffic by communicating with pilots? Also, do they offer WX information in air born?
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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 ...
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1answer
422 views

What is the aviation term for what the navy calls “fire control system”?

The weapons systems, including computers etc, in a naval ship can be referred to as the Fire Control System. I'm not sure if FCS would be considered an appropriate acronym for fire control; I'm using ...
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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?
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3answers
344 views

What is the area between the taxiway and runway shown in the picture below?

Is this the Arresting area? I'm not too sure what you call this area
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1answer
130 views

What is the difference between an aileron and a flap?

I have already been searching Google for the difference between an aileron and a flap, but I am not much satisfied, so now I am asking here on SE. What is the difference between an aileron and flap? ...
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2answers
197 views

Is there a specific aviation term for suicide by pilot?

CFIT, controlled flight into terrain, refers to an aircraft being unintentionally flown into the ground. Is there any term specific for suicide by pilot? CFIT would not apply to that situation.
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2answers
1k views

What is a hypernym for the ascending and descending legs of a flight?

If an airline flight is everything that happens in between your starting and ending gates. What is the generic term for each time the plane ascends or descends during an air route? In layman terms, ...
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2answers
199 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 ...
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1answer
715 views

What is altitude above surface / ASFC?

ASFC is an acronym frequently seen in official European publications, e.g. used by the French AIS: Also in some ICAO ones, e.g in Annex 4 (Aeronautical Charts) to the Chicago Convention: The ...