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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1answer
45 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?
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1answer
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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 ...
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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?
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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 ...
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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 ...
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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 ...
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3answers
376 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 ...
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Is the waves and signal dangerous for human at the airports? [closed]

Waved like VHF , UHF and other themes like radio or something ....
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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 / ...
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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?
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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?
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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 -...
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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"....
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207 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?
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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 ...
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1answer
124 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 ...
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3answers
256 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?
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4answers
201 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 ...
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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 ...
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6answers
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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 ...
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5answers
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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. ...
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3answers
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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 ...
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1answer
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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 ...
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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 ...
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212 views

What makes airplanes pitch up during landing?

So what exactly pitches the plane upward with the rear end down? Do flaps help lower the nose when deployed 80%-100% down with such low speeds?
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Keeping the engine under the wings, doesn't hurt the lift as the airflow speed is higher under the wings?

To create a lift, the airflow speed on top of the wings should be higher than the airflow speed on the bottom of the wings. But when you keep the engine on the bottom of the wings, wouldn't it hurt ...
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1answer
203 views

Why do pilots wait for a positive rate to put the gear up, When V1 means “commit to takeoff”?

To explain further, V1 means they cannot stop in time if anything happens. Therefore they must commit to taking off. So why wait for a positive rate? Shouldn’t it be retracted as soon as they see a ...
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3answers
109 views

Development Cost?

We all hear about how aircraft development costs multiple billions if not tens of billions of dollars, but what does this money go into? The material used in making a a single prototype aircraft isn'...
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1answer
260 views

Which engines do airliners start first?

I noticed many planes, especially Boeings (correct me if I'm wrong anywhere), start engine "2" first and shut down engine "2" last. However, I was watching an Airbus A350 cockpit video when I ...
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149 views

Can a commercial pilot with MPL , obtain PPL for general aviation in the UAE?

Is it possible for an airline pilot in case he would like to fly GA aircraft like c152/172 obtain the PPL license without going through the whole process?
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Can Non-citizen get a pilot job in US? [duplicate]

I finished all my training in US and got PPL, IR, CPL with multi and single both. My nationality is South Korea and wondering how can i get the jobs in US. Recently looking for the Mokulele in Hawaii ...
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Can pilots take multitools onboard unlike passengers in Canada?

Can pilots in other countries or Canada carry Swiss army knives onboard on commercial flights?
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What are the financial implications for Lufthansa (and other airlines) of keeping the back row of their A320neo free of passengers?

After the recent EASA airworthiness directive concerning the potential for weight and balance problems with the A320neo, Lufthansa announced it would no longer sell seats on the back row of those ...
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Can a commercial airline pilot, flying either A320 or B737, charge people for a flight in their own personal Cessna 172? [closed]

Or would they have to be some registered business for the industry?
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305 views

Why does the B737NG need electrical power for aircraft towing?

I have read the AMM for towing and one of the mentioned steps is to supply electrical power. Is it because you need power to turn on the hydraulics in order to pressurize your brakes? For B737NG
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1answer
228 views

Why do they tell you to tie your lifevest on the left side during safety briefings?

This might be UK specific, given I have only been flying internally recently. During the safety briefings, when describing how to inflate the lifevest the instructions are always: "Wrap the lines ...
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3answers
4k views

Why do aircraft leave the cruising altitude long before landing just to circle?

Often flights will leave the cruising altitude long before the actual landing. They will go down to a couple of thousand feet and stay at that altitude and circle for quite a while in waiting loops ...
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2answers
286 views

Could the toilet be used as an extra passenger seat?

In the US, if the toilet had a seat belt, would it be legal for an airline to board one more passenger than the number of normal passenger seats, requiring that whoever used the toilet last must ...
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1answer
185 views

What is the difference between aluminum tape and speed tape?

What is the difference between aluminum tape and Speed tape? Are these same or not?
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197 views

Are there locations/altitudes with minimum speed requirements?

For example, a slower aircraft operating on the North Atlantic Track System would have an operational impact on surrounding/overtaking aircraft as well as potentially increasing ATC workload to ensure ...
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133 views

What is the future for auto-pilots? [closed]

What is going to change with auto-pilots on commercial aircraft in the next decade or so? Will airlines allow an auto-pilot to control an aircraft when it lands and takes off? Will we start using
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From RAF fighter pilot to commercial pilot

I’d like to become an RAF fighter pilot for many reasons but to become a commercial pilot once I leave the RAF is not one of them. I am, however, curious to know, if I were to become an RAF pilot and ...
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What was the motivation for revoking the licence to the pilots of Northwest flight 188?

This video describes Northwest flight 188, where two pilots overshot their destination by 150 miles, without contacting ATC for an hour. They cited 'cockpit distractions' as the reason and ...
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Can a commercial pilot decide where to make their turn after departure?

If there aren't published vectors to tell a commercial pilot which heading to take as they climb, can they decide where to make their initial turn on their own or would an ATC always involved in where ...
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Why is the aviation industry taking so long to move away from the tube with wings model? [duplicate]

The industry is spending billions on maximising fuel efficiency and reducing other costs associated with the tube-with-wings model. When will novel designs like semi-dirigible and lifting body arrive, ...
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1answer
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What are the commercial benefits of VTOL? [closed]

there are a lot of companies doing R&D on VTOL aircraft. I understand their necessity for the military, but for civilian aviation, there are a very few application that requires it( medevac, ...
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2answers
315 views

Reclined seats for take off and landing

Normally on commercial flights, passengers are expected to bring their seats to an upright position for take off and landing. There are a few valid reasons for this. A little while ago, on a couple ...
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What kind of input is used by NASA's TASAR?

I've found the Aviation SE to be a really interesting read so far, I'm excited to be here! I'm fairly new, but I'm also old! What are the inputs for TASAR to crunch flight path optimization? Is it ...
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Is there any benefit to folding wings on commercial aircraft?

This video shows NASA researching folding wings, in what looks like a model of an airliner. What would be the benefit to this technology?
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Why do this airline experience more hard landings than others? [closed]

Ryan air has a reputation for hard landings, watching this video at the 2:22 mark and reading the subsequent comments (along with personal experience) suggests many people find the landing with Ryan ...