Questions tagged [icao-sarps]

ICAO SARPs (Standards and Recommended Practices) are technical specifications that have been recommended by ICAO for member states to adopt as civil aviation policy. This tag should be used on questions about the specifications in the ICAO SARPs rather than about the actual civil aviation regulations in a given place.

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2
votes
2answers
160 views

What is the proper ICAO phraseology to activate a flight plan?

OK, so you have a flight plan filed (over internet, phone, company or however), go to the aircraft and get in the cockpit. So you call the controller and request IFR or VFR as appropriate. What is ...
2
votes
2answers
118 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?
2
votes
1answer
45 views

What additional US-power or ICAO requirements apply to a departing US-based crew with a US-registered aircraft flying to land in Mexico?

What are additional requirements (equipment, licenses, identification, etc.) for a flight operation with a US-based aircraft and crew leaving the US to enter and land in Mexico that are imposed on the ...
5
votes
1answer
160 views

What does “zero offset between two waypoints” mean in ICAO Doc 4444?

My question is with reference to the GNSS based separation specified in ICAO Doc 4444. Could someone explain the significance/meaning of the condition "zero offset between two waypoints" criteria? if ...
6
votes
1answer
405 views

Can two opposite localizers to a single runway be on simultaneously?

In case of a single runway with two separate ILS systems (one in each end, facing localizers) operating on two different frequencies, can both localizers be on and transmitting at the same time, or ...
4
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0answers
124 views

In a flight plan, does it make any difference to write an increase of the flight level instead of writing a cruise climb?

According to ICAO 4444, a change of speed or level should be written in item 15 of the flight plan according to these rules: Change of speed or level (maximum 21 characters) The point at which a ...
5
votes
1answer
186 views

How do I include a STAR in an ICAO flight plan?

Would it be in accordance with ICAO norms to include a STAR identification right after the airway name in the field 15 of the flight plan? Or should the connecting point between the airway and the ...
7
votes
1answer
511 views

Is it possible to split a NOTAM in two messages in case it is too long to fit in a single message?

Would it be in accordance with ICAO norms to issue two different NOTAMs with the same year, series and number regarding the same subject and informing //PART 1 OF 2 PARTS// and //PART 2 OF 2 PARTS// ...
6
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0answers
351 views

How can I convert a frozen ATPL from South Africa to an Iranian one?

I have got a frozen ATPL license from South Africa and I'm from Iran. I came back home last year and I have converted my CPL/IR license to the Iranian piloting license by doing Air Law and Human ...
1
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3answers
174 views

Can a controller be tasked to provide more than one ATC service at a time?

During a visit to one of the ATC Facility I found out that the Aerodrome Controller was also providing procedural approach control service along with aerodrome control service. Similarly, Area Radar ...
4
votes
1answer
173 views

What is the meaning of “pass well clear” in the ICAO right of way rules?

ICAO Annex 2 states under 3.2.2.1: An aircraft that is obliged by the following rules to keep out of the way of another shall avoid passing over, under or in front of the other, unless it ...
2
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2answers
368 views

When would a pilot request a “VMC descent” or “VMC climb”?

Can anybody explain what's the point of this and in what kind of situations a pilot needs it? ICAO Doc 9432 "Manual of Radiotelephony" 8.3.3 An aircraft may request a clearance to climb or ...
2
votes
1answer
416 views

How exactly do ICAO's VOR-based minimum separation standards work?

This question is aimed at Air Traffic Controllers who are familiar with ICAO Separation minima. DOC 4444 states the following: Lateral separation between two aircraft exists when: VOR: both ...
2
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1answer
601 views

How can I calculate the Obstacle Free Zone of an aerodrome?

How can I calculate the Obstacle Free Zone of an aerodrome?
1
vote
1answer
119 views

What are the procedures for flight checking a glideslope and localizer?

What are the FAA and ICAO requirements and procedures for flight checks and calibration of glideslope and localizer transmitters? I'm interested in both the engineering and piloting aspects.
0
votes
1answer
512 views

Does in-flight Wi-Fi require regulatory approval?

Does any country have regulations that require a certificate or approval of the aircraft that use portable Wi-Fi in flight? Is there an FAA or EASA regulation or advisory, or an ICAO document or ...
4
votes
1answer
121 views

Does the ICAO definition of an “aircraft” include a minimum altitude capability?

The German air law includes in their legal definition of a "Luftfahrzeug", which is the equivalent of an aircraft, other devices intended to operate in the airspace if they are capable of being ...
18
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2answers
3k views

When replying to ATC, callsign first or last?

When I was in flight school, some instructor told me that it is the unknown ICAO standard that you should reply to an ATC call with your callsign first, like this: ...
7
votes
1answer
720 views

For how long is an engine start clearance valid?

If a pilot receives a clearance to start the engines, is the clearance void if he doesn't start them within a certain amount of time? How much time is allowed for starting the engines and where is it ...
5
votes
1answer
513 views

What differences are introduced between ICAO Annex 10 volume IV amendment 85 and amendment 89?

What changes have been made to ICAO Annex 10 volume IV (Surveillance Radar and Collision Avoidance Systems) between amendment 85 and amendment 89? I only have access to amendment 89, but I have some ...
4
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3answers
689 views

Which specific version of English are international pilots and ATC required/recommended to learn?

Are international ATC and pilots technically required to learn British English, American English, or something else? I've heard it said that they are "supposed to speak ICAO standard phraseology, ...
10
votes
1answer
298 views

What documented practices are there for NOTAM creators and handlers to combat NOTAM spam?

Sadly, NOTAM spam is a persistent thorn in the world aviation community's side. Bureaucratic rump-covering exercises lead to NOTAMs being issued and distributed that are mere noise to the average ...
9
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2answers
178 views

Can European (or more generally, non-US) airspace users airfile IFR flight plans?

In the US, there are two ways to airfile an IFR flight plan: Call Flight Service on the radio via the nearest FSS RCO and ask them to file the plan Ask the ATC entity you're talking to for a "pop up" ...
3
votes
1answer
292 views

Which aerodromes are in the scope of ICAO recommendations?

I'm looking for a clarification of how aerodrome characteristics are regulated in a country which has signed the ICAO Chicago Convention (more on Wikipedia). To guide the answer, I'm providing a list ...
5
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2answers
2k views

What separation and information does ATC provide in different airspace classes?

I am busy studying radio for my PPL in South Africa, but I'm struggling to understand the ICAO definitions of the different airspace classes, and how ATC separates traffic in them. I understand that ...
16
votes
3answers
5k views

What is the correct phraseology for declaring a fuel emergency?

If I am pilot, approaching my destination airport and realise that, after landing I will have less than 30 minutes of fuel remaining, how exactly should I express this when communicating with ATC? ...
7
votes
1answer
705 views

What is the ICAO equivalent of /G in a flight plan?

How should I fill out an ICAO flight plan if I have a Garmin GNS-430W WAAS certified unit? I file as /G in the US domestic format.
8
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2answers
2k views

How did ICAO SARPS come to include the 250 knots speed limit for aircraft below 10,000 feet?

In certain airspace classes, a speed limit of 250 knots IAS is imposed for aircraft flying below FL100/10.000FT, according to the airspace classes defined by ICAO. How did this limit find its way into ...
3
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4answers
7k views

What are the lowest authorized minimums for each ILS category?

I have been recently told that ILS minimums were changed some time ago. Could anyone tell me what the lowest authorized ILS minimums are for CAT I, CAT II, CAT IIIa, CAT IIIb and CAT IIIc? I'm ...
2
votes
1answer
181 views

Do new VHF radios need to be flight tested?

I'm in the process of upgrading all our VHF radios and the local regulator has asked us to follow the guidance/recommendations from ICAO, as we have more or less cancelled many of our local rules. The ...
3
votes
1answer
361 views

When must delegated airspace be listed in the AIP?

Two states can agree, through a bilateral letter of agreement, to delegate the responsibility for providing air traffic services (ATS) within a certain airspace from one state to the other. There can ...
6
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2answers
2k views

What is the correct use of the verb “to leave,” for exiting the runway?

What's the correct way to say, according to the phraseology; I will leave the runway; I will vacate the runway; or I will exit the runway?
6
votes
1answer
1k views

What is the difference between “amended” and “revised” clearances?

Reading the ICAO Phraseology Reference Guide I saw the term amendment applied to clearances, and I got a bit confused about how to differentiate it from a revised clearance. What does each one mean? ...
4
votes
1answer
614 views

Where can the FAA versus ICAO official filed differences be found?

ICAO has a process where individual countries may file differences from the ICAO standard when the rules of the country do not coincide with the published standards. Where can the list of differences ...
5
votes
3answers
1k views

Can an aerodrome in class G airspace be controlled?

Can an aerodrome be controlled, even if the only associated airspace is classified G? E.g. can such an aerodrome have a control tower with the authority to give takeoff and landing clearances and ...
24
votes
1answer
2k views

Declaring an emergency: How should you report fuel remaining?

When a flight has to declare an emergency, they are asked for souls on board and fuel remaining. Sometimes the ATC will want fuel in minutes (or hours) and sometimes in pounds. Could we get a ...
12
votes
1answer
283 views

Do companies based in non-English-speaking countries require intra-cockpit procedural communication to be performed in English?

I was watching a video of an MD-11 landing in Quito, Ecuador The crew is German (Lufthansa). When they speak with ATC it's in English (obviously). When they speak with each other it's in German (...
5
votes
2answers
1k views

What is the regulation related to weather radar use?

I think most commercial aircraft have a weather radar located in the nose cone, like this: (Source: PhotoBucket, by intelmani5) It's well known that radar emissions can be harmful, e.g. one could ...
7
votes
2answers
177 views

Are there regulations about objects/buildings above (across) taxiways?

ICAO doc9157 part2 recommend many standard of taxiway system, including width, separation, slope,etc. How about height of the object above taxiway, like passenger bridge or rail track? Is there any ...
2
votes
1answer
120 views

What is the status of “Notes” in ICAO Annexes?

As per the forward to ICAO Annex 11, the status of a "NOTE" in any annex is - "Notes included in the text, where appropriate, to give factual information or references bearing on the Standards or ...
8
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1answer
1k views

Are ICAO and FAA airport signs and markings the same?

Are ICAO and FAA airport signs and markings the same or are there differences? If so what are the differences?
6
votes
1answer
434 views

Do ICAO specifications have the force of regulation?

ICAO, the International Civil Aviation Organization, has specifications for the conduct of civil aviation throughout the world. Such things as the language to be used between controllers and pilots, ...
10
votes
1answer
5k views

How does ICAO differentiate between Commercial and Private flights?

How is the difference between Commercial and Private/General Aviation flights defined by ICAO? Here in the US, we use 91 flights -vs- 135 flights, but from what I've heard they use a different ...
8
votes
1answer
271 views

Where can the ICAO recommendations be found?

ICAO issues recommendations/rules/statutes/something? that standardizes the regulations for international air travel world-wide. What are these "rules" officially called and where can they be found?...
10
votes
1answer
11k views

Does an FAA pilot certificate qualify as an ICAO pilot licence?

What is an ICAO pilot license? I've seen it as a job requirement before, does my FAA ATP count?