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Questions tagged [icao]

The International Civil Aviation Organization is a UN body that develops international aviation standards.

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What does DRMS OTS mean in a notam

MULTIPLE DRMS OTS ON RWY 34R/16L. 9/3 EAST/WEST SIDE. 8/4 EAST SIDE. 6/6 EAST/WEST SIDE. 1/11 EAST SIDE. 18 APR 22:01 2024 UNTIL 31 MAY 23:59 2024. CREATED: 18 APR 22:01 2024 I have looked everywhere ...
Name's user avatar
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6 votes
2 answers
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Can ATC assign speed adjustment to aircraft on final approach course?

According to FAA Order 7110.65AA, 5−7−1.b. Do not assign speed adjustment to aircraft: 4. Inside the final approach fix on final or a point 5 miles from the runway, whichever is closer to the runway. ...
iop0453's user avatar
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9 votes
1 answer
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Are ICAO airport codes starting with X-ray valid?

The Wikipedia page on ICAO airport codes currently states that ICAO airport codes do not begin with I or J or X or Q and later In Russia, Latin letter X, or its Morse/Baudot Cyrillic equivalent Ь, ...
Anonyme2000's user avatar
0 votes
1 answer
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Difference between accuracy, integrity, availability, continuity, and functionality

My understanding is that accuracy is how close my estimated position is to my actual position at a certain point in time. I don't really understand how integrity is different from accuracy. Continuity ...
Name's user avatar
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-2 votes
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Why can't we choose our own call sign?

After listening to this funny exchange Kennedy ATC audio on youtube, about how ATC didn't knew Norwegian Airlines callsign was "RedNose", it occurred to me, why not have the option so that ...
Gabe's user avatar
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1 answer
158 views

Who and where can access the list of ICAO24 addresses?

Who and where can access the list of ICAO24 addresses?
Gábor's user avatar
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0 answers
114 views

Is there any API for planes with ICAO identifiers?

I'm looking for an API that I can use for images and details of all planes, preferably searched by the name of the plane or the ICAO identifier of the plane. Right now, I've found a list on Wikipedia ...
DaCuteRaccoon's user avatar
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42 views

When are you established on an RNAV segment under ICAO rules?

In the U.S. it is when you are within 1X the required accuracy. I have not been able to find the source publication for ICAO.
Name's user avatar
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1 vote
1 answer
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How to decode NOTAM?

I am not a professional, but an amateur trying to self-learn NOTAM code. I need some help in decoding this real NOTAM: A1671/23 - VIDF (India): Temporary restricted area Activated FIR Period: 2023-08-...
Daemon's user avatar
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5 votes
1 answer
348 views

Why is the first letter of Kosovo's airports "B"?

Generally, the first letter of ICAO airport codes indicates the region an airport is in. There are a few exceptions, though most can be easily explained. However, I have not been able to find any ...
astroleaf's user avatar
0 votes
1 answer
548 views

What is the definition of Taxiway Incursion?

I can't find any ICAO document that defines a Taxiway Incursion, but I can find some online presentations which were presented at ICAO workshops or seminars that loosely refer to Runway/Taxiway ...
Khalil Radhi's user avatar
2 votes
1 answer
211 views

Why does IATA have airport and airline codes different from the ICAO ones?

We all know that IATA and ICAO have different sets of codes for airports and airlines. My question is, why does IATA not agree to use the ICAO codes and end this duality. Note that the focus of the ...
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124 views

What happens if the current ICAO method disagrees with double wheel/dual tandem etc?

Is the old U.S. method (a weight max for each landing gear kind) simply ignored? Planes with 3, 12, 14 and 22 wheels are common after all but gear types with those numbers often aren't listed. If the ...
insert name here's user avatar
1 vote
0 answers
51 views

Why do heli PC2 operations require highest obstacle clearance

In designing a helipad I notice that the Australian requirements (AC139.R-01) for obstacle clear gradients specify that the slope category (12.5% slope) generally applies to PC2 operations, whereas ...
Paul Haubourdin's user avatar
8 votes
1 answer
1k views

Are airport codes with digits valid or pseudo ICAO codes?

Official definition states that an ICAO designator consists of 4 letters (A-Z). But there seems to be quite a lot of airports in the U.S. that don't follow this guideline. Of those, about 300 ...
Studio Eveline's user avatar
2 votes
0 answers
52 views

What is the validity of an ICAO frozen ATPL? [duplicate]

I would like to know what is the validity of a frozen Airline Transport Pilot License under ICAO regulations?
user68219's user avatar
0 votes
2 answers
397 views

Where can i find official list of all ICAO Docs published?

ICAO Docs are very essential for pilots to completely understand a concept and it is increasingly difficult to find relevant resources in internet. It would be better to know the list of Docs ...
Krishna Kanth's user avatar
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131 views

What is the technical reason behind why the FAA standard uses a 1000 ft aiming point and much larger runway numbers than the ICAO standard?

FAA and ICAO standards, respectively. If the larger FAA runway numbers are for easier identification, why wouldn't ICAO also adopt this feature to enhance safety?
Charles Nicholson's user avatar
1 vote
0 answers
77 views

Why are there no new major aircraft in ICAO Aerodrome catagory D?

So the 757, 767, A300 and A310 all were in ICAO cat D (mainly restricted by a wingspan between 36-less than 52m). Now though all these aircraft are discontinued, and there is no new designs looking to ...
Alastair Wyllie's user avatar
0 votes
1 answer
91 views

What's the purpose of categorizing alternate airdromes?

Why do we have alternates in categories of take off alternate, enroute alternate and destination alternate. Does this really need to categorize in groups or it's just pointless issue?
Mike's user avatar
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2 votes
0 answers
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How do I find out if my aircraft satisfies a particular ICAO equipment/surveillance/PBN code?

I have a new, G1000-equipped C172S that just arrived, and I’m trying to figure out the specific ICAO equipment/surveillance/PBN/etc. codes for the aircraft. I’ve been trying to find out where to find ...
StackExchange7's user avatar
1 vote
1 answer
227 views

What transponder code is assigned to Dream Chaser space-plane?

Dream Chaser is scheduled to start flying cargo missions to the space station in 2022. And, Sierra Nevada Corporation claimed it has the capability to land anywhere in the world.I have found it has a ...
Auberron's user avatar
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0 votes
1 answer
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ICAO ATPL Conversion to Transport Canada

I am a former Captain for PALExpress, an airline in the Philippines. I have a valid CAAP ATPL and am rated for the DHC8-400 and sadly was part of the retrenchment program for Philippine Airlines last ...
jdjoya's user avatar
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1 vote
1 answer
449 views

When in 1982 did ICAO start using three-letter airline codes?

All airlines have an alphabetic identification code issued by ICAO. From 1947, when ICAO was formed, until 1982, ICAO codes were two letters long;1 in the latter year, due to the increasing number of ...
Vikki's user avatar
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3 votes
3 answers
371 views

Is flying direct to a navaid considered a leg with track guidance?

When I design SID or Missed approach procedure with a typical sequence of initial legs like "Climb to 5000 feet on R-123 ABC VOR/DME, turn left/right direct to ABC VOR/DME", the regulation ...
Trinh Ngoc Khanh's user avatar
3 votes
2 answers
269 views

Which ICAO body designs PANS?

Most air law training documents go at length about how SARPs (Standards and Recommended Practices) are published but nothing about the process related to PANS (Procedures for Air Navigation Services) ...
Rawat Karim's user avatar
10 votes
3 answers
2k views

What is the exact meaning of "manoeuvring" when said by ATC in reference to traffic?

In the UK, when receiving a basic service, sometimes the ATC unit passes traffic information. They may say it like this: “Traffic to your three o'clock, similar level, C172 manoeuvring.” What ...
opr's user avatar
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3 votes
1 answer
163 views

Is takeoff permitted from an aerodrome inside a CTR when it's outside the tower's operating hours? [closed]

I am departing from an airfield which is within the CTR of a nearby airport but outside tower operating hours. The chart doesn't specify this situation. According to ICAO rules, Am I allowed to take ...
Gus's user avatar
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11 votes
2 answers
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Why are some item numbers missing in ICAO flight plans?

I was looking at an ICAO flight plan and observed that there are only specific ITEMS mentioned in it (see example below)? What is the reason behind excluding the item numbers 1, 2, 3, 4, 5, 6, 11, 12, ...
Nish's user avatar
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2 votes
2 answers
392 views

Which organisation deals with Aviation Law - IATA or ICAO?

Both Organisations are involved in Aviation Regulation. But which of them deals with Law? Are directives given by both equally applicable to all aircraft & airline operators?
Jonathan MilTech Benjamin's user avatar
1 vote
1 answer
175 views

Can an ICAO contracting state charge money for NOTAMS?

does anyone know of any written icao rules where they state if a contracting state is allowed to charge money for the dissemination of NOTAMS? are products like notams and Local Aeronautical Circular ...
user12253633's user avatar
0 votes
1 answer
414 views

When filing an ICAO flight plan with LPV, is marking GNSS equipment necessary or redundant?

Should equipment 'B' (LPV) and Equipment 'G'(GNSS) both be filed simultaneously in an ICAO flight plan, or does equipment 'B' simply imply GNSS?
Ryan Mortensen's user avatar
16 votes
1 answer
4k views

What is typical ATC procedure when a non-pilot calls from a commercial flight for help?

"This is ShinyWings 123, I'm not a pilot, the pilot and copilot are unconscious. Help." Probably a day air traffic controllers dream of with dread, when a member of cabin crew, or even worse,...
TheEnvironmentalist's user avatar
7 votes
4 answers
1k views

What is the correct way to get established on the outbound track on this approach?

If you have been cleared to LCA (from the direction shown by the red arrow) then outbound on the procedure, what is correct way to get established on the outbound track? Ideally, I'm looking for an ...
user51746's user avatar
10 votes
2 answers
895 views

Is it possible to fly an EASA registered airplane with an ICAO license?

Is it possible to fly an EASA registered airplane with an ICAO license? My problem is the following: I have obtained my ICAO PPL license in Argentina with 52 flight hours but currently I live in ...
Nicolas Lehmann's user avatar
3 votes
2 answers
2k views

What is the difference between "Standard Metric Level" and "Altitude" in ICAO flight plans?

What is the difference between "S" and "M" in flight plan altitudes? The FAA's ICAO flight plan documentation says: Standard Metric Level in tens of meters, expressed as S followed by 4 figures (...
user50042's user avatar
10 votes
2 answers
2k views

What organisation owns intersection names?

I understand that five letter intersection codes (such as WARPI, PAPPI, KUBBS, ROSLY, ZALPO, ...) are unique in the world. However, their names don't comprise a national prefix (as aircraft tail ...
scarpaz's user avatar
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0 votes
1 answer
77 views

Can i get A&P course materials in .pdf format? [closed]

I would be very grateful if you provide me any material about A&P basic course for mechanics.
Hakimi's user avatar
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2 votes
1 answer
332 views

For a coded departure procedure (SID), Fly-At-Altitude or At-Waypoint instruction has priority in case of conflict?

I am examining various RNAV departure procedures and especially those whose purpose is to overlay the existing conventional ones. I noticed that some of them begin with a "Flight at Altitude" ...
Vector Zita's user avatar
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5 votes
3 answers
15k views

ICAO and EASA classification of instrument approaches

ICAO distinguishes approaches operations based on DH between 'Type A' (DH >= 250 ft) and 'Type B' (DH < 250 ft), which are further divided into subcategories. From the Annex 6 — Operation of ...
Filip N.'s user avatar
2 votes
1 answer
135 views

Is there a required check before selling an airliner?

In France, when selling a car, the last check (more or less a C-check) must has been done within the 6 months before the owner change. Is there an equivalent requirement for airliners? I'm more ...
Manu H's user avatar
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4 votes
1 answer
255 views

Can a US registered motorglider be flown in Canadian airspace when piloted by a pilot with the appropriate FAA glider license?

Is a PPL-Glider recognized as ICAO approved? Can a US registered motorglider be flown in Canadian airspace (or land at an appropriate Canadian airport) when piloted by a pilot with the appropriate FAA ...
tgstewart's user avatar
5 votes
2 answers
1k views

If the airport reported BKN002, would that prevent performing a DH 259' approach?

According to this Instrument Approach: The published Minimums are a Visibility of 1300 m, and a DH of 259 feet. In accordance with ICAO, would the Visibility and Ceiling be above the Published ...
user avatar
2 votes
4 answers
4k views

How to pronounce ICAO?

How to pronounce ICAO, correctly? Civil Aviation students claim that their teacher told them to pronounce it as /ˌaɪˌkeɪˈoʊ/, eye-KAY-oh but when I look at Cambridge Dictionary it pronounces ICAO ...
user avatar
1 vote
1 answer
275 views

Does the validation of an ICAO licence allow you to fly internationally?

Hypothetical situation: A pilot with an ICAO-compliant PPL licence from Australia goes to France and France issues a licence validation in accordance with the Chicago Convention, thus allowing him to ...
Tombombadilly's user avatar
5 votes
3 answers
270 views

How do humanitarian flights arrange special permissions to fly when ATC isn't available?

In natural disasters, transportation infrastructure is often among the first and most critical of public services to be disrupted. Not coincidentally, it's also a time that tends to see small airports ...
Tal's user avatar
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0 votes
2 answers
202 views

Is there a manual which describes the algorithmic procedure on which the Vertical Navigation Guidance is based?

I am interested in the methods implemented by Flight Management Systems in order to calculate a trajectory path of vertical navigation guidance (VNAV), which takes into consideration the legs of the ...
Vector Zita's user avatar
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3 votes
1 answer
268 views

On the ICAO Flight Plan Form, does /S replace O, V, and L?

I know the S stands for standard equipment (VOR, ILS, VHF radio). Is the format like G/S (GPS with standard equipment), or does the /S not imply coverage of the other line items, i.e., VLGO/S?
Ryan Mortensen's user avatar
2 votes
1 answer
606 views

Can US pilots fly VFR OTT and/or VFR at night in Canada without additional ratings?

In the US, private pilots flying under VFR are implicitly allowed to fly without visual reference to the ground, eg. over an overcast cloud layer, as long as they maintain appropriate VFR weather ...
Tom's user avatar
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22 votes
3 answers
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 ...
Turbo's user avatar
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