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Questions tagged [regulations]

Regulations governing aviation worldwide or in any jurisdiction. Specific jurisdictions should use a more specific tag.

36
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6answers
26k views

Do lights on aircraft flash in a specific pattern?

On a clear night, everyone can spot planes quite easily: they have flashing lights. I have noticed that the pattern seems different for different planes, and tried to find a meaning. What I saw so ...
7
votes
1answer
5k views

Where to download NATs (North Atlantic Tracks) information?

I am reading about NATs (North Atlantic Tracks) and I found out they are created and regulated by the following entities: westbound flow: Shanwick Oceanic Control eastbound flow: Gander Oceanic ...
20
votes
4answers
56k views

Can civilians buy military aircraft?

Say one wanted to buy a retired F-14, or F-5, or a BAE Hawk. Could I do it? Obviously this would mean stripping out radars, weapons, rwr, and any other sensitive equipment, but after this, would it ...
12
votes
1answer
35k views

What is the main difference between an ETOPS certified and non-ETOPS certified plane?

ETOPS stands for Extended-range Twin-engine Operational Performance Standards, a rule which permits twin engine aircraft to fly routes which, at some point, are more than 60 minutes flying time away ...
3
votes
1answer
273 views

What happens to an airborne plane when its type is grounded by an authority?

Many countries have (temporarily I think) banned 737 Max 8s from taking off or landing. What happened to the ones in the air? Do they get special permissions or are they forced to divert to a ...
9
votes
1answer
5k views

How do pilots use stopway, EMAS, clearway and displaced threshold?

I noticed in Why is “clearway minus stopway” used in V1 adjustments? that a stopway and an EMAS are both indicated by yellow chevrons: Same Opa-Locka stopway on the left, and San Diego EMAS on the ...
29
votes
3answers
17k views

How flat does a runway need to be?

I always assumed that big runways are flat (or more specifically straight: they might have a slight slope in either direction), but while watching some crosswind landing footage shot at Birmingham ...
20
votes
1answer
18k views

What is the difference between aviation “accident” and “incident”?

When I hear speaking about aviation crashes, sometimes I hear about "accidents" and other times about "incidents". What distinguishes them? Is there an international standard that determines how ...
17
votes
3answers
4k views

Why is the sound quality of onboard public address so bad?

While not a frequent flyer, I did fly common airliners quite a lot, and each time the (very) low sound quality of onboard public adress system has always struck me. We all know technology makes it ...
20
votes
2answers
8k views

Can a pilot take off at his own discretion?

[I'm referring to an ATC conversation during the military coup in Turkey with an MD83 EP-TAS (ATA TBZ5402). Can a pilot take off at his own discretion? To summarize the link: a pilot is begging the ...
19
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3answers
22k views

What is the minimum distance allowed between two parallel runways?

Is there an international regulation for this matter or does it differ from one country to another?
11
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1answer
530 views

Where can I find regulations in different countries for flight level rules based on direction of flight?

I'm from Brazil, and here we use the West/East rule, so we use an odd flight level when we fly between 0/360 - 179, and when we fly between ...
22
votes
3answers
20k views

When does a flight require a copilot?

I was wondering if there are regulations for when a flight requires both a pilot and copilot. I always assumed a copilot is required once civilian passengers are aboard, but when I recently was a ...
8
votes
2answers
631 views

Do Federal Regulations really require compliance with all crewmember instructions?

On commercial flights, we're frequently told that all passengers are "required to comply with lighted signs and placards, and all crew member instructions". But when it comes to the CFRs, the ...
5
votes
1answer
163 views

How are aviation regulations treated on a global stage?

I know that the two large aviation regulatory authorities are the FAA and EASA, but every country also has its own civil aviation authority. Focusing on airliners that need to operate all over the ...
27
votes
4answers
5k views

Is there any way to relieve the Pilot in Command?

Is there any way to relieve the Pilot in Command besides hijacking and incapacitation? This question comes from a comment by rackandboneman, who says: And whose authority is sufficient to make an ...
20
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7answers
3k views

Does Daylight Saving Time affect local airspace?

Only some countries use Daylight Saving Time. In Canada, some provinces use and don't use DST (such as Saskatchewan). However, in remote and local regions where this is not observed, what would happen?...
48
votes
6answers
26k views

How close can planes fly to each other over the ocean?

While on a recent Air Transat flight from Toronto Pearson to London Gatwick, several hours into the flight and over the Atlantic Ocean, my daughter and I noticed a plane behind ours to the left, ...
10
votes
1answer
482 views

Are some countries' civil aviation authorities safer than others?

Okay, put down the pitchforks, I'm not pointing fingers at anyone! I'm just aware that every country has its own civil aviation authority, and I wonder if there's any reason to believe that some ...
8
votes
4answers
1k views

Is it legal for an SEP airplane to fly above its service ceiling?

Let's take a Cessna 172R for example. According to the POH this airplane has a service ceiling of 13,500 ft. I know that the service ceiling is the maximum altitude where a 100 foot per minute climb ...
3
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1answer
1k views

What regulatory bodies are there?

Since planes traverse the Earth, and a country may deem another country's airline unsafe, yet that unsafe airline is deemed safe in its country, what is the hierarchy of the aviation regulatory bodies ...
8
votes
1answer
281 views

Can an instrument procedure be intercepted from the middle and how?

While I was reading FAA-H-8083-6 I was wondering if a pilot can be instructed to intercept a procedure from a point somewhere in the middle of it. Specifically: A pilot departs from an airport ...
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 ...
4
votes
4answers
15k views

Are those devices allowed on a flight which create their own WiFi signals?

I am going from Canada to Mexico but I don't want to be dependent on in-flight entertainment. Thus I got seagate wireless plus so I can stream to my iPad. I couldn't find any policies I can use this ...
23
votes
6answers
19k views

Can a passenger request to visit the cockpit during a flight?

As a kid, I remember going to the cockpit of a plane with my mom (I believe the airline was AOM French Airlines). Is this still possible now? I understand the answer might differ with different ...
14
votes
2answers
1k views

What regulations exist for ATC real time RADAR simulator software?

Does professional ATC RADAR simulator software need to comply to some regulations or requirements in order to be used for real life controller training? Have ICAO, Eurocontrol, EASA or FAA published ...
16
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3answers
3k views

Is there a height limit to national airspace?

Given the following facts: satellites can operate at an altitude of 200km without triggering frontier violation incident aircraft can trigger diplomatic protestations if they cross a frontier at an ...
13
votes
1answer
962 views

What is the relation between number of crew members (pilots and attendants) and fleet size in airlines?

Taking into account relevant elements like the fleet size or the type of flights (short or long haul, passengers or cargo, ...), do airlines use typical ratios between the number of aircraft and the ...
10
votes
1answer
3k views

Are life jackets mandatory on planes that will never fly over water bodies?

Supposing I'm a regional carrier and my routes never pass over water bodies (sea or lakes which are over a certain size). Am I obliged to carry life jackets on my plane?
9
votes
3answers
5k views

How or when can the 250 KIAS speed limit below 10,000ft be exceeded?

This arose out of a comments discussion in this question. The only airspace I really know is the UK. Here, a controller may issue a clearance to exceed the 250kt limit below 10,000ft for reasons ...
7
votes
1answer
3k views

Why do people say aviation regulations are written in blood?

I have heard it said that all aviation regulations are "written in blood". I think this means that every rule in the book exists because someone died - and there was a lesson learned. Is this accurate?...
5
votes
1answer
312 views

Was there a historical requirement to announce altitude, temperature, etc?

It is a common experience of flying on commercial flights that pilots announce certain flying conditions, including altitude and speed. It has been previously asked on Aviation SE why pilots announce ...
5
votes
2answers
2k views

What, exactly is “on the MEL”?

The MEL, minimum equipment list, defines whether fault of some equipment on the aircraft prevents it from being dispatched for flight or not. However, sometimes (e.g. in comments to this question) ...
0
votes
1answer
131 views

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 ...
21
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4answers
7k views

Are seaplanes allowed to taxi in residential areas?

There's a small pond/lake behind my house. A sea plane was just going around it. It was very loud and got like 10 feet from the shore. It's just going in circles and won't take off and leave. This is ...
18
votes
3answers
8k views

Has anyone ever been penalised for buzzing a control tower?

Has there ever been a pilot who was caught and penalised for performing a "circus stunt fly-by" next to a control tower? To clarify the question: I mean legal actions took place; for example ...
15
votes
1answer
2k views

Why are speed restrictions imposed for flights flying below 10,000 ft?

I know that restrictions do not always apply and ATC can cancel them or pilots can request for speed restriction being canceled. But why is there such a speed restriction in first place? Are there any ...
9
votes
1answer
3k views

Are the size and location of the registration number regulated?

On modern airliners, how large are the registration numbers? I know they are on the tail, but are they also under a wing? Do the regulations vary by country? If so, what is the US regulation?
7
votes
2answers
415 views

Do crosswinds affect which pilot lands the plane?

I know the crew usually decides ahead of time which pilot is to be PF for each phase of the flight. If, when they arrive at their destination they discover a considerable crosswind component, does ...
6
votes
1answer
782 views

Can a captain fly in the right seat as SIC under part 129?

Re a Part 129 air carrier that is short of co-pilots: Can a pilot who usually flies in the left seat (B737 aircraft: non-US registry) as the Pilot-in-Command fly in the right seat as the SIC (co-...
6
votes
2answers
265 views

How common are regulations limiting when the FO can be PF?

I was reading that in India regulators have specified certain airports at which the FO is not allowed to take off or land. The Pilot-in-Command shall not authorise a Co-pilot to effect ...
5
votes
2answers
151 views

Is vertical separation based on geometric difference or altimeter difference?

In the comments below one of the answers to this question about the influence of temperature on vertical separation, the question was raised whether ATC ensure 1000ft vertical separation based on ...
3
votes
2answers
721 views

In which countries a medically unfit US pilot can fly? [closed]

For example can one get another license in a foreign country? Which countries allow that?
3
votes
4answers
615 views

What would happen if I exceeded mach 1 over a regulated area?

What would happen if I exceeded mach 1 over a regulated area? Are there any penalties in place for this violation? Would ATC actually know I’m flying supersonic or would they have to go out of ...
2
votes
1answer
450 views

What is the hierarchy of aviation regulatory bodies? [duplicate]

What does the hierarchy of the aviation bodies look like? Does it look like this: International: ICAO Continental: EASA,ECAC,...? National:?
2
votes
1answer
1k views

What is the maximum legal flight time for single pilots under Part 91/135 operations?

I'm referring to FAA Part 91 and 135 operations (or similar, EASA) and the maximum duration of one single flight (not the maximum duty time per day / week / month). If any, what are the legal flight ...