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
votes
1answer
335 views

Do 'threshold' and 'end of the runway' mean the same thing?

While I studied aviation, I got confused by these two words. Can anybody explain whether they're the same or not, and if not, what is the difference?
4
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2answers
2k views

What does the NetJets “QS” stand for?

Every NetJets aircraft that I've seen has a tail number ending in QS. Knowing aircraft operators, I'm sure it stands for something, but I don't know what. What does the QS stand for in NetJets tail ...
4
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1answer
601 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 ...
4
votes
1answer
509 views

What is the difference between a volume-limited-payload and a maximum-zero-fuel-weight-limited-payload?

Reading [Long Range Aircraft-AEA Requirements]. In appendix, Para 1.2 Definitions and specifications, the definition for "Payload" states Payload should be the Volume Limited Payload (...) or the ...
4
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1answer
12k views

What is the difference between an air carrier and a commercial operator?

I am currently studying for my commercial and I've been seeing both of these terms used interchangeably. Is there a difference?
4
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1answer
97 views

Is the “wing area” of a biplane the projected area or the total area?

When you specify the wing area of a biplane, do you specify the planform area (the projected area) or do you specify the effective area of both the wings?
4
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2answers
290 views

What is the ICAO equivalent of a “point out”?

In FAA air traffic control, when we have an aircraft that is transitioning through someone else's airspace that we want to talk to we do a "point out": Point Out. A physical or automated action ...
4
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2answers
262 views

How to decide which aerodromes should have Electronic Terrain and Obstacle Data?

What is the meaning of "aerodrome that is regularly used in international civil aviation"? Is there any explanation or reference material in support of Aeronautical Information System (AIS)? I found ...
4
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1answer
247 views

What is the difference between SUA (Special Use Airspace) and FUA (Flexible Use Airspace)?

The EUROCONTROL Concept of the Flexible Use of Airspace (FUA) is that: an ASM concept currently applied in the ECAC area and based on the fundamental principle that airspace should no longer be ...
4
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2answers
4k views

What is the difference between MCP and METO?

I was reading the Cessna 150H POH earlier today and noticed that the manual mentions something like "Normal cruising is done at 65% to 75% of METO power." The Cessna 172S POH charts refer to cruising ...
4
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2answers
358 views

What is a “natural flight loop”?

I'm roughly (edit: very well) familiar with flight simulation, but recently I came across a new term. In this brochure (scroll to the second page) by Airbus about flight simulators, they talk about ...
4
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1answer
1k views

What is the difference between SUA and SAA?

I would like to understand the difference between Special Use Airspace (SUA) and Special Activity Airspace (SAA). I found the following definitions. Eurocontrol Lexicon for SUA (from FAA): ...
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? ...
3
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5answers
754 views

Is (L/D)max achieved at a specific speed or AOA?

I'm little bit confused about the (L/D)max. So I've read this blog: https://joeclarksblog.com/?p=4155 and the author shows this graph: So if I understand it ...
3
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2answers
2k views

What is the difference between fuel exhaustion and starvation?

Is there any technical difference between fuel exhaustion and starvation? And what does it mean if a pilot says he has a "fuel shortage"?
3
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2answers
444 views

Is there anything in any airport called a “warm apron”?

I heard a pilot said they are located at big airports like LAX. But I couldn't find any information about it.
3
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2answers
271 views

Which is the technically correct term: Nose Gear or Nose Landing Gear?

Talking about landing gear system, came across my mind the correct and technical name. Is it NOSE GEAR or NOSE LANDING GEAR?
3
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2answers
173 views

Why are waypoints not named uniquely?

Waypoint names are not unique. Why ? This is unnecessary (it would be possible to use unique names only). It introduces potential for confusion. So why are duplicate waypoint names permissible and ...
3
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2answers
1k views

What is the regulatory definition of AOG?

What is the legal or regulatory definition of AOG (Aircraft on Ground)? For example, this is sometimes stamped on a repair order.
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 ...
3
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1answer
87 views

Is the “PROB” in a TAF only applying to the next group or all following ones?

Let's assume I have a TAF that reads: [...] PROB40 TEMPO 0815/0822 5000 -SHSN BKN008 OVC015 TEMPO 0822/0909 1000 SN VV003 BECMG 0902/0904 16012KT Which of the <...
3
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4answers
3k 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 ...
3
votes
1answer
480 views

What is the difference between directs and shortcuts in the Route Availability Document?

I am studying about directs and shortcuts in aviation. While flying, an airplane can move from an airway to another by using directs or shortcuts. What I want understand is the difference between ...
3
votes
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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2answers
506 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.
3
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2answers
930 views

What is the difference between a “compass swing” and “check swing” procedure?

What is the difference between a "compass swing" and a "check swing" procedure?
3
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1answer
410 views

What is the meaning of T/O Thrust => TRQ / N1 in a flight log?

I work at a software company which builds record-keeping software for aviation. What is the meaning of TRQ / N1 in a flight log, under a ...
3
votes
1answer
620 views

What does leading edge radius mean?

What does leading edge radius mean amongst these parameters of a st cyr 24 airfoil?
3
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1answer
971 views

What is radar minima?

I was studying the Aeronautical Chart User's Guide and I came across the term 'radar minima' several times under the graphics depicting charted airports. Blue – Airports with an Instrument Approach ...
3
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2answers
2k 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?
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 ...
3
votes
1answer
425 views

What does “redatum” means?

I was doing a question about a fully hydraulic elevator and it's position in relation to the trimmable horizontal stabiliser and the explanation of the answer contained the word "redatum". What does ...
3
votes
1answer
124 views

What is the name of the figure consisting of a slow revolution around longitudinal axis? [duplicate]

"An airplane performing one slow revolution around its longitudinal axis is performing one of these..." This was a clue on Jeopardy today. The contestant responded with, "What is a barrel roll?" ...
3
votes
1answer
109 views

Term to differentiate between a flight and a flight instance?

What's a term to differentiate between a flight schedule (QF 72) and a particular instance of that flight schedule (QF 72 departing on July 25)? For example, I might ask "Which flight are you taking"...
3
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1answer
175 views

What is that term to describe the wing motion range?

What is that term naming the range of motion of the wings when on the ground (hanging/drooping) then bends upwards during flight?
3
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0answers
680 views

In simple terms, what are LNAV, VNAV, and Baro-VNAV approaches? [duplicate]

In simple words, what are LNAV, VNAV, and BARO-NAV? Are they all precision approaches and will they cancel the traditional approaches?
3
votes
1answer
2k views

What term is the EASA equivalent of the DER in the FAA safety assurance process?

When the FAA approves a hardware or software (or mixed) system for use in an aircraft requiring Type Certification, A Designated Engineering Representative (DER) is selected to work with the ...
3
votes
2answers
130 views

What does “wraparound” mean in the context of flight controls?

In the references regarding the flight control (for example in F-16) I see the word "wraparound". For example "Rudder coil wraparound", "IBU pitch wraparound", "IBU lateral wraparound"or "AMUX bus ...
2
votes
4answers
32k views

What is the true meaning of the word “wilco” when used on the radio? What is its origin?

Pilots often learn to use the word "wilco" on the radio through contextual interpretation. During my experience as a pilot communicating on the radio I have often observed pilots using the word "wilco"...
2
votes
1answer
1k views

What is the difference between Fly-By and Short-Turn?

By all definitions that my team and I have found, fly-by and short-turn (with respect to military unmanned air vehicle waypoint based flight) mean the same thing. Briefly, this allows the pilot to ...
2
votes
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 ...
2
votes
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...
2
votes
1answer
2k views

What is a GDS (in the context of the airline industry)?

I have been looking at this article and throughout the article they mention GDS's but do not explain the terminology. Does somebody know what they are talking about - For e.g. - Three GDSs emerge ...
2
votes
1answer
2k views

What are the meanings of these terms related to instrument flight?

Please describe and define the following terms: Homing 0 degree relative bearing Tracking Hold Entry Holding pattern What are its uses and purposes? Any one to suggest a thorough instrument book as ...
2
votes
1answer
159 views

What's the difference between a “flight line” and a “tarmac”?

I was at a conference where there was a discussion on ontology for assets. There were two classification trees, one for assets on the flight line and one for assets on the tarmac. What is the nuance ...
2
votes
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 "...
2
votes
1answer
748 views

What are these “F,S,O” characteristic speeds?

I am leaning for an avionics exam and I encountered a question asking for the meaning of F, S and O . They appear to be "Characteristic speeds", which are calculated by the flight management system (...
2
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2answers
134 views

In the modern aviation context, is the word “supercharger” generally assumed to mean a gear-driven system rather than an exhaust-driven system?

In the modern aviation context, is the word "supercharger" generally assumed to mean a gear-driven system rather than an exhaust-driven system? At one time the word "supercharger" often was used to ...
2
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2answers
148 views

Does “nose dive” have a technical aviation meaning?

I've usually heard the term 'nose dive' used in a metaphorical sense -- "Wow, your stock portfolio is really in a nose dive!" Does it have any legitimate aviation meaning? More specifically, is it ...
2
votes
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?