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.

Filter by
Sorted by
Tagged with
41
votes
4answers
11k views

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:...
0
votes
1answer
132 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 ...
-1
votes
0answers
58 views

Corona virus and social distance [closed]

How or how are airlines segregating passengers on board still flying aircraft? Are they reducing numbers so that there is space between seats?
5
votes
1answer
79 views

What is ATR Automatic Thrust Restoration in MD-83?

What is ATR Automatic Thrust Restoration in MD-83 ?
1
vote
1answer
91 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 ...
0
votes
2answers
130 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://...
4
votes
1answer
193 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 ...
0
votes
0answers
84 views

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 ...
1
vote
0answers
76 views

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 ...
11
votes
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?
3
votes
1answer
525 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). ...
0
votes
0answers
63 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?
0
votes
1answer
79 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 ...
12
votes
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, ...
1
vote
0answers
56 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 ...
1
vote
1answer
61 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 ...
8
votes
3answers
392 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,...
20
votes
8answers
9k 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 ...
39
votes
4answers
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 ...
1
vote
1answer
141 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 ...
3
votes
1answer
287 views

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

what is the difference Between Minimum fuel and Mayday Fuel ?
-4
votes
1answer
207 views

What Are these in the PFD? [closed]

I marked them with white circles. What are they for?
17
votes
3answers
6k views

Can a commercial airplane overtake another airplane going in the same direction?

If there are two commercial airplane flying towards the same destination, on the same flight path, and the second plane is being faster than the first plane, is the second plane allowed to overtake ...
7
votes
2answers
1k views

What is this in the primary flight Display?

What is this in the primary flight Display ?
7
votes
3answers
7k views

If the Concorde had an engine fail at cruise altitude, would they enter the coffin corner?

I know the coffin corner is only meant for subsonic aircraft, but if the Concorde is just cruising at Mach 1 and had an engine failure and also lost that afterburner, would it enter a coffin corner ...
7
votes
1answer
185 views

What kind of warranty comes with a commercial aircraft?

Just wondering what the warranty is like. Can an airline simply decide to give every single aircraft back for the money they paid? Assuming they were unhappy with the results. Will the manufacturers ...
0
votes
1answer
61 views

Why did Avianca have A318s with PW6000 engine?

I want to know about the upgraded PW6000 Avianca A318s. Why did those get upgraded? Did they not produce enough thrust already?
3
votes
1answer
235 views

Does the Ground Proximity Warning System (GPWS) see through clouds?

Or can it only detect terrain on a clear day or night? I’m mostly asking because of PIA268 I know GPWS is much more reliable in todays time, and I’m unsure if the accident flight even had a GPWS ...
1
vote
2answers
339 views

How many stripes does a student pilot have?

When a student is finishing a Bachelor in Sc. Aviation, how many stripes does a student have? Can a student have stripes during his bachelor graduation or do they have to go through other PPL courses?
3
votes
2answers
380 views

If Boeing used two sensors instead of one simultaneously, wouldn’t they be in the same position today?

this article states that the original version of MCAS was suppose to rely on two sensors, One sensor will detect a high angle of attack, therefore activating MCAS The other sensor will ...
1
vote
2answers
140 views

What 's the difference between Angle of Attack and Pitch? [duplicate]

I am interested in knowing the theoretical and practical differences between the Angle of Attack (AoA) and Pitch: Graphical definitions How are they related? In what circumstances these angles are ...
0
votes
0answers
52 views

Why do civil aviation aircraft not routinely carry missile defense systems? [duplicate]

With all the incidents with civil aircraft and missiles, why do civil aircraft not carry flares and other defensive measures by default? If official aircraft carry them it is technically possible to ...
7
votes
3answers
446 views

Did Boeing need MCAS because the 737 MAX didn’t meet FAA longitudinal stability requirements, or was it to make the MAX feel like the NG?

I’m confused on this. I’ve read in multiple different places that MCAS was required due to the easier stick forces at a high angle of attack and a high G force, and because of this, the Max didn’t ...
0
votes
1answer
99 views

Is the waves and signal dangerous for human at the airports? [closed]

Waved like VHF , UHF and other themes like radio or something ....
6
votes
6answers
3k views

Has a commercial jet airliner ever stalled on takeoff / at low-altitude?

In general aviation, a common reason for fatalities is low altitude stalls on takeoff or practising go-arounds. Has there ever been an incident where a commercial jet airliner stalled on takeoff / ...
1
vote
1answer
105 views

How did the Brazilian Civil Aviation Authority have MCAS on paper from Jan 2018?

how could they know but nobody else did? Did they buy the extra sensor or something?
4
votes
2answers
1k views

Why does the stick force per-g test require it to be harder for pilots to pull back on the yoke instead of easier?

What happens when it’s easier to pull back banked at such steep angles, wouldn’t it be a good thing that a pilot can maintain his altitude easier than harde?
-3
votes
1answer
164 views

How would a pilot stabilize the aircraft after a dual engine failure?

Since there would be no more thrust, they would have to exchange energy by losing altitude to keep forward speed. But what happens towards the end, when you have to reduce your V/S to something like -...
1
vote
0answers
55 views

Do negligible weights affect the control of a commercial aircraft? [duplicate]

I was watching a video and it said that switching seats on a commercial airplane would be fatal. "Switching of seats from the rear of the airplane to the front seats would result in probable accident"....
1
vote
1answer
221 views

Why can’t aircraft use GPS to generate the IAS, instead of using pitot tubes? [duplicate]

I’m mostly asking after reading about Aeroperu Flight 603, which was caused by a piece of tape blocking the sensor. Is there any other way to gather IAS or is this the best way to do it?
35
votes
4answers
14k views

Does the sterile cockpit rule mean flight attendants could not inform the pilots if a passenger is in the lavatory while on final?

Context: I've seen this interesting question just the other day, asking what would pilots do after receiving this information while on final: either go around or continue with the landing. However ...
1
vote
1answer
133 views

What does it take from the airlines to be ETOPS certified?

I have been told that the airlines to be certified for ETOPS apart from the aircraft certification, engineering wise it should have some conditions met in order to get the certification and to ...
2
votes
3answers
261 views

If the pilots used the brakes upon landing, would the force essentially slam the front wheel down?

So if the pilots braked immediately, with only the back wheels down, and nose wheel still up, would the force from braking cause the front wheel to come slamming down?
1
vote
4answers
236 views

When do commercial aircraft tail numbers change?

Each (large, commercial and most other) aircraft has a registration number, painted or stickered on its hull: the tail number. I was under the false impression that tail numbers don't change, and ...
0
votes
0answers
47 views

How come PSA airlines got the same IATA code as Comair?

PSA Airlines has the same IATA 2-letter code, "OH", as the now-defunct carrier Comair. Yet - the two companies are not related. How is it, that IATA reassigned the same code to an unrelated carrier ...
19
votes
5answers
9k views

Is it possible to stall a plane so badly that the nose refuses to go down due to lack of airspeed?

So basically, a stall from a high AoA to the point that the entire plane just falls with the rear end pointing straight down? Because if wind is no longer passing over the wings, then this includes ...
12
votes
5answers
4k views

How can I get a ride in the jump seat as a non-professional pilot?

A couple of years ago, I had a strong fear of flying. Now, I really enjoy it. In fact, it is a dream of mine to sit in the jumpseat of an A320 during takeoff. I've had a handful of flying lessons. ...
-1
votes
3answers
194 views

Is the point of “groundspeed” in aircraft just to have a second reference of speed but two totally different measurements of speed? [duplicate]

From not understanding groundspeed will always be significantly higher than airspeed, unless the plane is pitching up and down. Is the ground speed just there for pilots to look at and say “okay we ...
5
votes
1answer
197 views

When were commercial pilots first allowed to use glasses?

Currently, pilots with defective (but correctable) vision are allowed to pilot airliners if they have at least two pairs of their corrective lenses (typically glasses) with them on board. Was there a ...
5
votes
3answers
357 views

How do flaps help an aircraft take off at a lower speed, yet cause drag at the same time?

Wouldn’t the drag caused by the flaps just decrease the acceleration, so, although they can lift off at a lower speed, wouldn’t it be faster to just use no flaps and rotate at the higher speed that is ...

1
2 3 4 5
12