Questions tagged [airspace]

Airspace means the air above a specific country (e.g. US airspace) but for aviation purposes it is usually divided into different types, each of which may have different regulations.

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4
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2answers
180 views

Which altimeter setting is used to define airspace boundaries?

Let's say that we're flying VFR over the top of Class D airspace at 3,000 feet. The Class D extends up to 2,900 feet - we're above it, but just barely with a 100' buffer. We're also talking to ...
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1answer
374 views

What do these double Class Bravo airspace floor and ceiling limits mean?

While browsing SkyVector I came across these double Class B airspace limits within the same section (is that what you call it?). I'm wondering what it means and what the difference is between this and ...
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1answer
98 views

Does this chart show a heliport in class D airspace without a control tower?

I was looking at the Los Angeles area on sky vector, and I noticed a tiny little triangular class D area right next to LAX. It shows that the height of the class D goes up to 2,500, but I couldn't see ...
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1answer
65 views

In what airspace may gliders fly in clouds in the UK without an IFR flight plan and without contacting any air traffic control facility?

In what airspace may gliders (sailplanes) legally be flown in clouds in the UK without an IFR flight plan and without contacting any air traffic control facility? Also, how high does this class (...
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2answers
301 views

If operating an ultralight with private pilot certificate, which rules apply?

If a holder of a private, commercial, or ATP pilot certificate operates an ultralight aircraft; and that aircraft is also equipped with the radios and transponders required by an airspace for GA ...
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2answers
115 views

Clarification on the SEA-TAC VFR map

I've been looking at the SEA-TAC VFR map, and something caught my eye... On this map one can see that the SEA-TAC airport has a class B designation in a strange inverse-rhomboid shape, surrounded by,...
7
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1answer
69 views

Why should lower limit of a Control Area (above 3000 ft) coincide with a VFR cruising level?

In ICAO Annex 11 it is recommended: When the lower limit of a Control Area is above 900 m (3000 ft) MSL it should coincide with a VFR cruising level Why should it coincide with a VFR cruising level?
4
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1answer
238 views

On the LAANC map for sUAS operations, why does the permitted ceiling drop to zero southeast of KGFL?

Above is a screenshot1 from the LAANC map for obtaining authorization to operate sUAS (model airplanes, "drones", etc), centered on KGFL, which is Floyd Bennett airport near Glens Falls NY. ...
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2answers
129 views

On old sectional charts, what was the purpose of the domestic ADIZ regions and what was the difference between a “Defense Area” and an “Open Area”?

Looking at an old US sectional chart from 1956, I noticed a few oddities around where Air Defense Identification Zones (ADIZs) were placed. Compared to modern airspace where the US ADIZ is strictly ...
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0answers
51 views

What are the pros and cons of PPL training at class C airport?

I'm looking to start PPL training soon, and the closest airfield is Austin-Bergstrom International, which is a class C. The only downside I see to doing training at KAUS is that the few PPL programs ...
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3answers
96 views

When a Tower and the Approach Control closes who takes over the airspace?

When a Tower and the Approach Control closes, who takes over the airspace? and also what about When a Tower, within an Approach Control, closes, who takes over the airspace?
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1answer
82 views

What training is required for a class B endorsement?

14 CFR 61.95 requires solo student pilots to have an endorsement to (a) fly through class B airspace or (b) takeoff/land at a class B airport. However, the requirements to get it are pretty vague: (...
4
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1answer
289 views

What is the difference between a waypoint and a significant point in an airspace?

I know ATS routes are made up of waypoints, but what are Significant Points used for? Is there a difference, or are they really just two names for the same thing?
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2answers
127 views

What purpose does a control area really serve related to managing air traffic flow?

I can understand that we have control zones at busy airports to streamline the flow of landing and departing traffic. But in Control areas of many airports i have seen that routes go straight through ...
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2answers
117 views

How is the term “Coast” defined for FAA regulatory purposes?

14 CFR 91.1 defines the applicability of part 91. This paragraph defines two areas of jurisdiction where certain parts of part 91 apply: within the United States, including the waters within 3 ...
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2answers
324 views

Do US state governors have jurisdiction over their airspace?

Do local governments have any control over their local airspace in the US. Could a governor singlehandedly close or restrict the airspace above his state? I know the FAA controls national airspace ...
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1answer
144 views

What is the status of a bravo airspace when the associated TRACON is evacuated?

On 18 March 2020, an earthquake struck just south of KSLC, causing an evacuation of the control tower and TRACON facilities. The airport was closed. Later in the day, I found myself unable to ...
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2answers
214 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 ...
2
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2answers
222 views

What is the floor of the class E airspace near KRHV when the tower is closed?

See the attached diagram snippet for KRHV in Northern California. The chart supplement says that when the tower is closed the airport surface is class G. At this time, what is the floor of class E in ...
22
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1answer
2k views

Why was the Iraqi airspace closed on 12 Mar 2020?

I was onboard BA105 on March 12, 2020 (London LHR to Dubai DXB), which was rerouted (I hope this is the correct term) to fly over Egypt. See the inflight map photo below: Close to arrival, the crew ...
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1answer
429 views

In reference to airspace, what does the FAA mean by “within the lateral boundaries of”? Is this construed to also imply a vertical limit?

Several FARs use the phrase "within the lateral boundaries of" (x airspace). What does the FAA interpret this phrase to mean? Specifically, what is the vertical extent of the airspace encompassed by ...
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2answers
272 views

What is the main reason why cruise flight in the transition layer is prohibited?

What is the main reason why cruise flight in the transition layer is prohibited? For example if we have a separation of 1000 ft between transition altitude and transition level, why should we not ...
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2answers
198 views

Can single engine aircraft fly in class A airspace?

A friend surprised me the other day by saying that single engined aircraft are not allowed to fly in class A airspace. I understand that the aircraft is under IFR in class A, with ATC clearance, (...
2
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1answer
372 views

What criteria are used to classify an airport as a satellite airport?

The AIM discusses services provided to satelitte airports of class C airspace. What determines whether an airport is considered a satellite? Distance, private or public classification, etc?
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2answers
485 views

Gas Venting Stations: What's The Big Deal?

On sectional charts you can see that, through various restrictions, regulators encourage pilots to avoid flying too close to Gas Venting Stations. These seem to be places where natural gas may ...
2
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1answer
178 views

What is the altitude required to bypass Russia's airspace restrictions for airlines? [duplicate]

Given that Russia charges a lot for flights over Siberia from Europe to Asia, would flying above the Kármán line (100km) effectively bypass this restriction (from legal perspective) ? If not, what ...
2
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2answers
103 views

Vancouver FIR meaning

In looking at Garmin Pilot, there is something labeled "Vancouver FIR" which has 3 segments. It's located over the northern Cascades and to the east of the northern tip of Vancouver Island (Canada). ...
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2answers
57 views

Is the capacity of an airspace sector related to the number of routes it crosses?

I've been searching for data about the capacity of sectors for my PhD research but somehow can't find any...the only thing I found is the routes it crosses ....can we conclude that it's the capacity ...
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1answer
185 views

In the US, how does the distinction between E2 and E3/E4 airspace affect pilots?

In the US, practically speaking, how does the distinction between the E2 and E3/E4 subtypes of Class E airspace affect pilots?
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1answer
56 views

Question about federal airways in Class E airspace going from 5500 MSL(USA)

Class E with a floor of 1,200 feet AGL is shown with the "fuzzy" side of the blue. And sometimes Class E has a floor higher than 1,200 feet. They will print the floor of the Class E altitude in the "...
22
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3answers
5k views

To which airspace does the border of two adjacent airspaces belong to?

Consider two adjacent airspaces of different categories. For example, airspace G is up to 2500' and above this is an airspace D. The border is at 2500'. Which airspace are you in if flying at exactly ...
4
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1answer
297 views

When can airliners fly from Israel over Tunisia's and Algeria's airspace?

Per flightradar24, on August 25th 2019, an Air Europa Boeing 787 flying from Tel Aviv to Madrid flew over Tunisia's and Algeria's airspace. I thought flights departing from Israel or flying to it are ...
3
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1answer
798 views

Where does one request a VFR transition route through class B?

Other than staying outside class B until being cleared in, is the point where one requests a transition route important? For example, the SFO B coastline transition is shown as starting up at San ...
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2answers
171 views

What happens to a plane that goes to / from an enclave when the surrounding country closes its airspace?

When Pakistan closed its airspace, planes that had routes flying over Pakistan had to deviate around that country. What would happen to planes en route to or from Lesotho, if South Africa closed its ...
0
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1answer
160 views

What additional airspace will be off-limits to an a/c w/ no elect. system or xponder under 91.225 (ADS-B) compared to under 91.215?

Under FAR 91.225 (requirement for ADS-B-out), what additional airspace over the 48 contiguous states in the U.S. will be off-limits to an aircraft w/ no electrical system or transponder, compared to ...
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1answer
434 views

A question about FAR 91.225(e)(2) — pertains to ADS-B-out requirement and exemption for aircraft with no electrical system

This is a question about FAR 91.225 (requirement for ADS-B-out) and where aircraft with no electrical system will be able to fly. FAR 91.225 exempts aircraft with no electrical system from many of ...
4
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1answer
5k views

What is the difference between VFR Flyways, Corridors and Transition Routes?

What is the difference between: VFR Flyways VFR Corridors VFR Transition Routes I can find a Flyway chart on the reverse side of the TAC chart and also Transition Routes in the TAC chart. But where ...
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1answer
396 views

What is the difference between 'warning area' and 'ADIZ'? Are they overlapped with each other?

On FAR AIM, definition of warning area is Airspace of defined dimensions, extending from three nautical miles outward from the coast of the U.S, that contains activity that may be hazardous ...
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154 views
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1answer
117 views

How may one notify the FAA of the apparent flaw in the airspace design at KEGE?

Several questions and answers have addressed the design of the airspace around KEGE. The situation is perhaps best summarized in this answer -- Can the Class-E-to-surface airspace near Eagle County ...
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1answer
212 views

May an ultralight vehicle pass directly above KEGE at 9200 MSL at 1600Z with no prior authorization without violating FAR 103.17?

May an ultralight vehicle pass directly above KEGE at 9200 MSL at 1600Z with no prior authorization without violating FAR 103.17? http://vfrmap.com/?type=vfrc&lat=39.643&lon=-106.916&zoom=...
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2answers
320 views

Does ICAO allow continued flight in RVSM airspace after a transponder failure?

If a civil aircraft's transponder fails in RVSM airspace, can it still be allowed to fly in RVSM according to ICAO? And could it be allowed to fly in class A airspace, according to ICAO?
3
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2answers
94 views

Is there a minimum weight requirement for flying manned aircraft in controlled airspace (B, C, D, E)?

The Colomban Cri-Cri is a small twin engine plane with an empty weight of ~200 lbs and a MTOW of ~400 lbs. Can I fly this in controlled airspace? What are the requirements for aircraft registration?
3
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2answers
117 views

To what FAA office or personnel should one direct an inquiry about the reasons behind the airspace design at a particular airport?

The airspace design process is extremely complex. See for example this FAA document, Order 7400.2M. To what FAA office or personnel should one direct an inquiry about the reasons behind the design ...
4
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1answer
209 views

What are the historical precedents of today's E2 and E4 airspace? (US)

What are the historical precedents of today's E2 and E4 airspace? From what previous airspace classes did these airspaces evolve? How do these precedents help us understand the significance of the ...
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3answers
2k views

What are E2 and E4 airspace?

We have a number of questions here about E2 vs. E4 airspace (see summary of links in this answer) but what does that mean? As far as I can see, neither the AIM nor the ATC Orders mention E2 or E4 ...
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1answer
239 views

What are all the US airports where E4 “extensions” change to E2 and become part of a larger E2 “surface area” when the tower closes for the night?

Of all the US airports with part-time control towers and with E4 "extensions", in which cases are the airspace definitions written so that the E4 "extensions" change to E2 and become part of a larger ...
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1answer
65 views

In the US, is there much variation among the various ARTC Centers as to where a SVFR clearance may be granted?

In the US, is there much variation among the practices followed by the various ARTC Centers and Approach Control facilities as to where a Special VFR clearance may be granted?
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1answer
76 views

In actual practice, do ARTC Center personnel generally follow the rule that a SVFR clearance may be granted in E2 airspace but not E4 airspace? (US)

In actual practice, in the US, do ARTC Center personnel generally follow the rule that a SVFR clearance may be granted in E2 airspace ("surface areas designated for an airport") but not E4 airspace ("...
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0answers
104 views

In the US, can airspace simultaneously be E2 and E4? What happens at KSTC to the airspace in the dashed magenta boundary when the tower closes?

In the US, can the same airspace simultaneously be E2 and E4? Consider the case of KSTC -- St. Cloud Regional Airport, MN. http://vfrmap.com/?type=vfrc&lat=45.546&lon=-94.059&zoom=10 On ...

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