Questions tagged [icao]

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

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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?
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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Got question while reading ICAO document

I got question reading ICAO document(9971). On 3.1.4.2, it says: Studies have shown that occupancy count can be used to complement entry counts and allow higher values for such entry counts. I'm so ...
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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) ...
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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 ...
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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 ...
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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, ...
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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?
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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 ...
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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?
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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,...
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7 votes
4 answers
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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 ...
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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 ...
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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 (...
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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 ...
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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.
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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" ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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?
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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 ...
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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 ...
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What methodology did ICAO use to create the overall code nomenclature for airports?

If an airport is from North America, then it starts with K and so on. How did ICAO get the letters from? Why does the Philippines region starts with A? Why do airports in Izmir have LTBx prefix? Did ...
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11 votes
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How to know that single engine aeroplanes are not allowed to depart on the TETAN SID?

I'm studying for my IR exam and came across another tricky AIP question. Which of the following statements about the TETAN 1A standard departure chart are correct? Single engine aeroplanes ...
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What are the ICAO GNSS waypoint naming conventions?

I'm curious about ICAO naming conventions regarding GNSS and RNAV waypoints. Would I be correct in assuming that all GNSS area waypoints are 5 letters, and RNAV waypoints are 6? What about waypoints ...
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Does a straight missed approach require all turns to be less than or equal to 15 degrees?

I am studying ICAO's PANS-OPS 8168 manual, and I am having trouble understanding the criteria applied to straight and turning missed approaches. In the manual, it clearly states: I-4-6-2 Types of ...
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According to ICAO, which rules are applicable to SBAS Non-Precision Approach Procedures?

I am studying the Satellite Based Augmentation System (SBAS) from PANS OPS manual 8168, Volume II, sixth edition, and I have a problem concerning the criteria of SBAS-NPA. In Part III, Section 3, ...
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who owns the abbreviated name of an airport [closed]

is the name of an airport such as LAX the act of the FAA or the ICAO? from reading, it looks as though the process starts at the ICAO as a recommendation, then is adopted by the FAA?
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Migration from AFTN to AMHS?

My question is: Is there any obligation from ICAO about migration from AFTN to AMHS? and If that's so, what are deadlines? Any ICAO doc about this?
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5 votes
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Is separation provided in class F airspace?

According to the Wikipedia page on different airspace classes, separation is provided for IFR/SVFR to other IFR/SVFR in class F airspace. In ICAO Annex 11 from 2018 (p.36 in the pdf file), I can't ...
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How does the ICAO VOR separation apply to reciprocal radials?

If two aircraft are on VOR radials that are apart by 15 degrees or more and one aircraft is at least 15 DME out, they are considered laterally separate. I read this rule in ICAO documents but my ...
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2 votes
1 answer
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How to correctly interpret the taxi procedures in ICAO Doc 4444?

I have a question to ICAO Doc4444, Chapter 12.3.4.7, Taxi procedures for departure, c). My question is how to interpret the following, knowing that words in parentheses are mandatory, and words in ...
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Where does it say that type certificates are required?

I am doing research and looking for a regulation (from FAA, Transport Canada, ICAO or anywhere else) that explicitly states that a type certificate is required for aeronautical products (aircraft, ...
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1 answer
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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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Are there countries where not all plane crashes are investigated (even if deadly)?

background information I was struck by the news of this deadly plane crash on 20 Dec 2018 which claimed 8 lives and apparently is not investigated as the plane and its potential survivors were not ...
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How long does it take for a new FIR to be created by ICAO

How long does it take ICAO to create/approve a new Flight Information Region(FIR)? Occasionally FIRs are split because of various reasons. The question is how long ICAO takes to approve the new FIRs ...
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How do aviation regulatory bodies relate to each other? [duplicate]

I am trying to make a overview how regulatory bodies in aviation safety interrelate. Maybe something like a hierarchy. I would start with ICAO and IATA, but where comes then for example FAA, CAA, LBA?...
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What is the difference between APV I and APV II?

Been reading all these ICAO documents about APV I and II and none of them clearly describe (from a pilots perspective) the difference. Please help
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List of all FIR and their authorities [closed]

Wikipedia has this page https://en.wikipedia.org/wiki/Flight_information_region containing a table of all FIR (with ICAO codes) and their respective authority countries. Is there any place where I ...
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If the number of flights in the world exceed 2^24 how will ICAO allocate the address to the flights? [closed]

What is the approximate number of commercial flights in the world as of now? If the number of flights do exceed will they use the concept of frequency reuse in cell phones(dynamic allocation of ...
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