Questions tagged [aeronautical-information]

Use this tag when the questions is related to AIS (aeronautical information services) or AIP (aeronautical information publication) as defined by ICAO Chicago Convention.

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What is the "Model TA-M" I marked in yellow in the table?

What is the "Model TA-M" I marked in yellow in the table? I think it represents a weather chart, but I don't know if it's an abbreviation or what the explanation is. The table image was ...
pilot162's user avatar
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1 vote
1 answer
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What does the expression (For VOR/ILS/MLS, give VAR) in the table mean? Because VAR (magnetic variation) value is not given in the table

What does the expression (For VOR/ILS/MLS, give VAR) in the table mean? Because the VAR (magnetic variation) value is not given in the table. The table image was taken from the AIP Turkey document for ...
pilot162's user avatar
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3 votes
1 answer
373 views

What do "Secondary power supply/switch-over time" and the corresponding values in the table mean?

What do "Secondary power supply/switch-over time" and the corresponding values in the table mean? I have no idea about the statements I marked in yellow in the table. I would be glad if you ...
pilot162's user avatar
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0 answers
118 views

What exactly is LDI (Landing Direction Indicator), what does it look like, where should it be, how does it work and how do pilots use it?

What exactly is LDI (Landing Direction Indicator), what does it look like, where should it be, how does it work and how do pilots use it?
pilot162's user avatar
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1 vote
1 answer
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What do "NAC Dynamic" and "ASFT" mean according to the image in the LTAF AIP document?

What do "NAC Dynamic" and "ASFT" mean according to the image in the LTAF AIP document? I found out that ASFT stands for "Airport Surface Friction Tester" but I don't know ...
pilot162's user avatar
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0 votes
1 answer
43 views

What do "AFS" and "LTAFYDYX" mean according to the image in the LTAF AIP document?

What do "AFS" and "LTAFYDYX" mean according to the image in the LTAF AIP document? I found that AFS stands for Aeronautical Fixed Service, but I don't know what it does and the ...
pilot162's user avatar
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4 votes
1 answer
269 views

What is the "Change Notices Available" information on the airport information page of the Jeppesen chart?

What is the "Change Notices Available" information on the airport information page of the Jeppesen chart? For some, none is specified, and sometimes different numbers such as four and ...
pilot162's user avatar
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2 votes
1 answer
438 views

Speed reductions prior to reaching a holding fix

The instrument ACS states that speed reductions for a hold should be made “3 minutes or LESS” from the holding fix. While the AIM under 5-1-3 j.8(a) says speed reductions should be made “AT LEAST 3 ...
Ashton's user avatar
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3 votes
1 answer
109 views

What are RW values in Venule increments?

In US AIP differences from ICAO: 12.3.1.7 d/e/f U.S. controllers do not give wind speed, visibility, or RVR values in metric terms. RVR values are given in 100- or 200-foot increments while RW values ...
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2 answers
530 views

Why is more oxygen required at higher altitudes?

Referring to a chapter from Aircraft Maintenance And Repair Normal air contains approximately 21 percent oxygen, and this provides adequate oxygen for the human body at lower altitudes. At 34 000 ft [...
Salmonbeing00's user avatar
4 votes
1 answer
2k 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?
yash's user avatar
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2 votes
1 answer
288 views

How is true airspeed measured?

Now, indicated airspeed is pretty much the dynamic pressure that air is creating. What about true airspeed? How do the calculations go about factoring out all the wind patterns and finding the speed? ...
Salmonbeing00's user avatar
0 votes
1 answer
240 views

Material alternatives for aircraft leading edge

Are there any material alternatives for the aluminium used on the aircraft leading edge? By alternatives, I mean composite alternatives.
Salmonbeing00's user avatar
3 votes
4 answers
3k views

Why landing gears still need bungee springs?

While studying landing gear, I came across this term 'bungee spring' to which there was no definitive explanation in text with regards to its usage. So in the image, you can see for the jury strut/ ...
Salmonbeing00's user avatar
2 votes
4 answers
1k views

Why are true and indicated airspeed different?

So, I understand that True air speed is the motion of aircraft relative to air around it. And, indicated airspeed is speed arising due to dynamic pressure. Considering a true airspeed of 100 knots, ...
Salmonbeing00's user avatar
1 vote
2 answers
93 views

When do pilots use NOTAMs? [duplicate]

Usually, pilots will check NOTAMs during pre-flight prep. Are there some situations where they use them in a specific flight phase? If yes, in which case would it be useful? Thank you
FlyingRandomGuy's user avatar
2 votes
1 answer
1k views

Where to find the parking coordinates of the aircraft in the Apron?

Is it possible to find out the coordinates of where the aircraft park in an the Apron? I mean some sort of list for each terminal or aeronautical chart. I was thinking about the AIP (Aeronautical ...
Federico Gentile's user avatar
4 votes
0 answers
37 views

How to obtain transformation parameters between the Vertical Reference System EGM-96 and a Local Geoid Model? [closed]

Dear Mr/Mrs Geodesy Engineer, Cartographers and AIS Specialists I have a quite deep question here, AIP data locations are determined by geographic coordinates /X & Y axis/ and vertical values /Z ...
Б. Золбаяр's user avatar
6 votes
2 answers
799 views

Why do we see "page intentionally left blank" so often in aviation related documents?

In aviation, we see the phrase "This page is intentionally left blank" quite often in documents like POHs, AIP etc. I can't remember seeing this in any other field. Why is that the case? Why do we see ...
Florian's user avatar
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1 vote
1 answer
102 views

How are change-overs between regional air traffic patterns communicated? [duplicate]

The airport near me that has two major landing/takeoff patterns part of a large regional air traffic control plan involving other major international airports (SFO/OAK/SJC) The duplicate-cited ...
crasic's user avatar
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2 votes
1 answer
756 views

How to calculate the best climb rate and glide rate?

Considering the lift equation $$L = C_L \frac{1}{2}\rho v^2 s$$ Given $P$ is 1,000 ft, $\rho$ is 0.002308, and $V$ is the cruise speed of a Piper Archer or 126 knots, we get $$L = (0.4) (0.002308) (...
Aishve Torah's user avatar
1 vote
0 answers
128 views

Which countries provide the parameters for their national height reference model in the AIP?

There is a standard in Annex 15 1.2.2.3 "When a geoid model other than the EGM-96 model is used, a description of the model used, including the parameters required for height transformation between ...
Б. Золбаяр's user avatar
1 vote
1 answer
2k views

Where to find information on ILS categories at European airports?

I have a list of airports in Europe and I need to find up-to-date information about ILS categories (I, II, IIIa, IIIb or IIIc) at these airports. Does anyone know where I could find such data ...
Martin's user avatar
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3 votes
1 answer
377 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 ...
mins's user avatar
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