Questions tagged [commercial-aviation]

Commercial aviation is the part of civil aviation, whether general aviation, non-scheduled service, or scheduled airline service, that involves operating aircraft for hire to transport passengers or cargo.

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0answers
85 views

Aviation Bus comparison: interference, reliability, flexibility and security [closed]

Which of these two bus standards provides more reliability, flexibility and is more secure: MIL STD 1553 RS-485
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2answers
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Before COVID, what was the largest aviation crisis ever? [closed]

The Covid-19 pandemic is the worst crisis aviation has ever faced. Which one was the biggest one before that pandemic?
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Factors to be considered when re-engining aircraft

What parts of the aircraft need to be adjusted / refitted / added when fitting new (different type) of engines? Also what what kind of re-certification regarding airworthiness etc. will be necessary?
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1answer
102 views

Does the retirement age for commercial airline pilots vary across the globe?

Do the retirement age of commercial airlines pilot varies from country to country?
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15answers
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Are there passenger flights with stops in the middle?

Train and bus lines usually have a number of stops along the way where some passengers can get on and off, while the rest stay onboard and continue to their destinatiom. For sufficiently long routes, ...
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1answer
188 views

What programming language(s) is Boeing's MCAS written in? [closed]

What language is Boeing's MCAS written in? Thanks
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3answers
201 views

Could gliders be a clean, practical alternative to other forms of transport?

Would it be possible to use pure gliders as an eco-friendly mode of transport? From what I have read so far, gliders can travel at a speed of 100-170 km/h. That would not be able to compete with a jet ...
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1answer
91 views

1.VRB02KT: Is it varying more or less than 180°? 2.VRB03KT: Is it surely varying more than 180°? [duplicate]

Based on the following ICAO Annex 3 criteria for the use of the abbreviation VRB (not FAA, which is different and evident): when the total variation is 60° or more and less than 180° and the wind ...
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1answer
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Why there are multiple classes in same plane? [closed]

This question always baffled me, why most conpanies do not have different planes for each ticket class ? There are obvious benefits to this system: Better paying customers can fly more reliable/newer/...
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1answer
115 views

Can a company without an AOC hire out pilots to another company that does have one?

Is it legal for a company that does not hold an Air Operator Certificate (AOC) (company A) to hire out a pilot a second company that does have an AOC (company B)? Company B would be the one actually ...
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1answer
189 views

Why don't airlines place some physical separator between passengers in the planes to prevent the spread of COVID-19?

Why don't airlines place some physical separator between passengers in the planes to prevent the spread of COVID-19? A bit like the following, but adapted for cabins and viruses: (image source)
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1answer
170 views

Has any commercial airliner ever flown inverted? [duplicate]

Has any commercial airliner ever flown inverted, either intentionally (extremely unlikely) or during an upset?
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3answers
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How different is ADFX/ARINC 664 router from normal Router?

ADFX or ARINC 664 is a protocol that is derived from the Ethernet protocol. What I understand it is Point to Point (no routing of data) Deterministic used VLAN for addressing I just wonder do we ...
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1answer
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Electrically heated windshields are mostly transparent, but their colors vary from light blue, yellow or light pink. Please explain

Found it on a quiz worded this way. No other details unfortunately. I can only assume it has to do with the heated element materials of tungsten or molybdenum reaction with film layer materials. ...
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5answers
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First time passenger flight by two pilots?

In this video, the captain proclaims after take-off: We were nervous about this, but takeoff went smoothly It was his first passenger flight in the A350, but still... not exactly what I would want ...
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1answer
77 views

Why aren't we using drone blimp/hybird airship for delivery? [duplicate]

Currently, the heaviest weight a commercial drone (the type that delivers Amazon package, not the type that delivers tons of stuff) can lift is 4.5kg with a 30-45 minute battery life. A drone blimp/...
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1answer
169 views

What is the difference between an Airbus A330-200 and an A330-243?

I am just curious to know the difference between Airbus A330-200 and A330-243. Sri Lankan Airline A330-243 Sri Lankan Airline A330-200
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2answers
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How serious is the problem of “stopping too far” next to the jet bridge?

In the answer to the recent question "How does an airliner adjust ...", there is the mentioning of the signal: "STOP TOO FAR". But what to do if you see this? In other words, if ...
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1answer
2k views

How does an airliner adjust and move exactly over the coloured lines before stopping in front of the jetways?

How does an airliner adjust and move exactly over the coloured lines before stopping in front of the jetways?
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0answers
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Can any US airline fly to and from any US city it wants to?

I am trying to understand the US commercial aviation industry. Assuming that slots are available, are US airlines permitted to fly to and from any US city they want to? Or are there limited permits ...
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1answer
128 views

Why did the 747-8's freighter version make its first flight before the passenger version?

I have read that the 747-8F entered service in October 2011, almost eight months ahead of the passenger version (747-8I). Anyone know why this is? Thanks
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0answers
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What is the ratio of standby crews to flying crews?

Section 4.O of the FedEx Collective Bargaining Agreement discusses how pilots are to be compensated for being on standby. From what I can tell they basically get paid a "trip guarantee" that is close ...
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4answers
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Why don't commercial aircraft use tail hook technology?

Tail hooks help drastically reduce an aircraft's speed during landing, and would therefore reduce the necessity of having long runways. So why doesn't tail hook technology be implemented into ...
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0answers
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Why do supersonic and hypersonic planes have a pointed nose whereas commercial planes have a round nose [duplicate]

We see supersonic and hypersonic planes having a pointed nose whereas commercial planes have a round nose.is there aerodynamic reason for these different design?
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2answers
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Shall We Consider Reversers in performance Calculations?

Thrust reversers are featured to help slow down the plane after touchdown. Moving the thrust levers aft activates the translating cowl to open, closing the blocker doors. This action stops the fan ...
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1answer
148 views

How to define quarter-chord sweep angle for a cranked wing?

I have the values for surface area, span, aspect ratio, and quarter chord sweep angle, etc., for a general trapezoidal planform. So, I changed my wing to a single cranked wing such that surface area ...
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1answer
400 views

How many cabin crews are needed for an A350-1000? [closed]

How many cabin crews are needed for an A350-1000?
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2answers
119 views

Is AMDAR a required system on aircraft?

I was intrigued by the assertion that COVID-19 depressing commercial aviation has lead to lower quality weather forecasting The aircraft observations are a key piece in the jigsaw of national and ...
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1answer
39 views

Is there standard ticket data format specification for commercial flight operators? [closed]

I am new to this group and what brings me here is I am doing a research on ticketing solutions for commercial airlines. So I just wanted to find out if there's a international standard specification ...
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3answers
313 views

How do airlines train their pilots to deal with the stress of delays?

There are some good answers here dealing with boredom during long flights and with the physical stress of piloting, and with what pilots to do during a delay. I'm interested in how pilots cope with ...
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4answers
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Why are 'ghost flights' necessary?

This article details the recent (March 2020) grounding of 90% of Ryanair's fleet due to the COVID-19 outbreak. Flight tracking data showed that all bar one of the jets had been flown in recent days:...
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1answer
144 views

Why are non-essential passenger flights still being flown? [closed]

I'm not asking about essential passenger flights like for "like food, supplies, and flying medical workers. Oughtn't non-essential passenger flights have been shut down in North America, to curb the ...
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1answer
138 views

What is ATR Automatic Thrust Restoration in MD-83?

What is ATR Automatic Thrust Restoration in MD-83 ?
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1answer
165 views

Can the 787 mini navigation display be controlled independently from the ND?

Some aircraft, e.g., the Boeing 787 have the option to display a "Mini Navigation Display" on the left Outboard Display Unit, right under the Primary Flight Display: (image source) Is the ...
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2answers
209 views

Is there simpler way than scraping flightradar to determine Number of Flights between Two Countries?

Is there a simple way to procedurally determine how many flights are flown between two countries on a given day? Maybe even get an inbound/outbound break down? I consulted the FAA data site (https://...
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1answer
319 views

Why does Google's Wing drone have dimples?

The question What operational aspects of Alphabet's Wing drone delivery service will be the same as that of an airline? includes a cropped photo of a google drone from FAA Certifies Google's Wing ...
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0answers
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FAA's handbook, “in the middle of instrument”means where in this page?And is there anything wrong in ths page that I can correct?

Excuse me, does anyone know how to correct this page. My English and knowledge of aircraft is not well. this is one of FAA's handbook, "Instrument Flying Handbook" and its "Instrument Flying Handbook ...
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0answers
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Carpet Plots for Aircraft Sizing

Generally, Carpet Plots are constructed to find out an optimal design which will satisfy all the performance needs and is least in weight & cost. I want to know how to construct a carpet plot? I ...
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2answers
2k views

Does the NTSB and other investigative agencies charge airlines for investigations?

Does an airline have to pay the investigation team? For example the NTSB? And if Boeing or Airbus participate in the investigation, do they also charge the airlines?
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1answer
601 views

What happens if an aircraft tries to land at MTOW (if greater than MLW)? [duplicate]

Here's a scenario: Just after Take-Off, there's an emergency on-board and pilot wants to land immediately. But, the weight of the plane wouldn't have decreased by large margins (usually 0.02*MTOW). ...
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1answer
286 views

Cruise Mach Number less or more than Critical Mach Number

Do commercial airplanes cruise at Mach number higher than the critical Mach number? And what is the critical Mach number of airplanes like B777 or A330?
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1answer
81 views

During which phase of the mission profile, the airplane fastest?

In a mission profile, there are various phases such as Climb, Cruise, and Descent (excluding other phases). My question is during which of these phases, the Mach number of the airplane is highest? Is ...
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2answers
2k views

What is the Function of Pressurization Light on Exit Doors for Commercial Airliners?

I am well aware that the average human is unable to open plug doors in flight due to pressurization of the cabin. I've noticed, however, a "cabin pressure" warning light in the window of exit doors, ...
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0answers
59 views

What's the benefit of cranked wing for commercial airplanes [duplicate]

Many commercial airplanes have a kink in the wing geometry. A discontinuous change in the wing trailing edge sweep is present in the wing of the A320. What's the benefit of this? Is there any ...
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1answer
63 views

Best Practices when removing/inspecting/mounting control surfaces?

I am looking for a better way to essentially "mount" the control surfaces from a Boeing 737-747-777-787 and MD-11's. The current process is to just remove them and strap to a table. The issues with ...
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3answers
416 views

Is it possible for a plane to be over fueled (and over-weight) to take off?

I've just reached my destination after 33 hours going from one European hub to another. A journey which usually takes a max of 6 from leaving my house! On the final leg of the journey, after boarding,...
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8answers
10k views

Double deck vs wide body airliner, why would anyone build a double deck one?

I don't understand why double deck aircraft (or multiple decks in general) are a good idea. They must be, because there is a significant amount of them. But given a cross area, which should roughly ...
42
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5answers
16k views

Why did my flight climb so sharply on takeoff?

I was on a Ryanair flight this morning that seemed to perform an incredibly aggressive takeoff from London Stansted on a 737-8. Takeoff was fairly fast, but the climb was the steepest I ever ...
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1answer
288 views

Airfoil and Wing Analysis for Transonic Speed (M = 0.85 and Re = 42 million)

I am working on a project where I have to design a plane which has to cruise at 0.85 Mach at 35,000 ft. While working on the wing design, I quickly discovered that 6 series airfoils, with a good ...
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1answer
884 views

What is the difference Between Minimum fuel and Mayday Fuel? [closed]

what is the difference Between Minimum fuel and Mayday Fuel ?

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