Questions tagged [safety]

Safety includes all aspects of protecting aircraft, passengers and crew from accidents, mistakes and other potentially dangerous situations.

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30
votes
5answers
9k views

Why are passenger seats not facing backward on an airplane?

In the event of a crash, facing backward sounds much safer: Forces are applied on a much larger surface (your whole back is in contact with the seats, instead of just a seatbelt and maybe the ...
2
votes
3answers
1k views

Which is safer? The Piper Tomahawk or the Cessna 152?

I have booked my first flying lesson for 2 weeks time, in my first step to obtain a PPL or LAPL. I had done all of my research on the Cessna family, assuming that is what I would learn in. I was ...
9
votes
3answers
452 views

Is it common for automated control systems to use non-redundant sensors?

While reading an article about the Lion Air Crash with a Boing 737 Max 8, I was very surprised by the following paragraph: In designing the 737 Max, Boeing decided to feed M.C.A.S. with data from ...
0
votes
2answers
215 views

Is “hacking small planes” a separate or larger problem from/than general small-aircraft security?

Apparently the DHS has issued a "hacking alert" for small aircraft: The alert warns if a hacker gained physical access to certain small planes, they could attach a common device to its wiring. This ...
6
votes
2answers
5k views

How many bird strikes are there per year? Any world-wide statistics?

Does anyone know where I could find where the highest rates of bird strikes are? Along the same lines, other wildlife, such as moose or bears on runways?
1
vote
1answer
293 views

Is this plane safe to fly on? The turbine blades look damaged [closed]

While waiting for a recent flight, I observed this aircraft with what appear to be rather worn turbine blades. Is this close to being a safety issue or is it purely cosmetic?
5
votes
1answer
308 views

One man push-back

Towbarless pushback operation of a passenger aircraft is generally done with at least 2 people. The first person (walk-out assistant) communicates with the cockpit crew members and observes the ...
2
votes
0answers
186 views

Do visual docking systems improve safety?

Are there any studies that shows A-VDGS (Advanced Visual Docking Guidance System) is improving the safety of aircraft movements on airports?
33
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10answers
13k views

What would be the safest way to drop thousands of small, hard objects from a typical, high wing, GA airplane?

The subject pretty much states my question, now I will provide a bit of background. A family member, who lived on the west coast of Florida Manasota Key, collected tens of thousands of fossilized ...
36
votes
6answers
14k views

Why do we say certain things three times (e.g., “Mayday, Mayday, Mayday”), rather than two or four?

Repetition is a key characteristic of communication in the control tower, cockpit, and control room. Some phrases, like "Mayday" get repeated. The speaker says the same thing three times. We know ...
0
votes
3answers
183 views

What's the relation between speed of an aircraft and takeoff distance?

I'm making a tool that when given : weight of aircraft , takeoff speed , runway length and some other parameters , it analysis the takeoff performance and states whether using the brakes now is safe ...
50
votes
9answers
10k views

Why don't commercial passenger safety videos ever explain policy instead of merely dictating it?

British Airways announced and published their new in-flight passenger safety video: I'd like to draw your attention to two pieces of instruction given in the video, ...
22
votes
4answers
8k views

Is there a legal maximum altitude?

In the US, is there a highest legal altitude allowed for certain planes and does it depend on the plane? I heard from a sort-of-reliable source that the maximum is 45,000 feet but I haven't been able ...
22
votes
5answers
13k views

Why don't commercial aircraft adopt a slightly more seaplane-like design to allow safer ditching in case of emergency?

For example : Why don't they have a more hydrodynamically shaped fuselage underside ? Specifically for the aircraft that have their engines mounted under the wings, isn't this too dangerous for ...
18
votes
2answers
4k views

What improvements did Airbus make as a result of the Air France 447 accident?

As far as I can tell, the following factors all contributed to this crash: Pitot tubes susceptible to ice crystal blockage Crew not aware that they can stall the airplane due to alternate law No ...
29
votes
8answers
12k views

Why aren't cell phones allowed to be used in aircraft?

What problems do cell phones cause? How is using a cell phone in the air different than using it from the ground?
1
vote
1answer
137 views

Is it Ok for co-pilots to snooze? [duplicate]

What are the policies on long flights and taking shifts sleeping between 2 pilots? Could a pilot set the cruise control and alarm during any flight?
18
votes
2answers
891 views

What makes it safe for the DC-8 to use reverse thrust in flight?

For most jets, the use of reverse thrust to slow down in flight, where even possible, is extremely dangerous, and strictly prohibited. Not so on the DC-8, which is certified for the safe in-flight ...
18
votes
3answers
2k views

When do flights get cancelled due to fog?

When flights get cancelled due to fog, what triggers the cancellation? Fog is too thick, too wide-spread, blocks the view of tall buildings or other landmarks? Or is the problem the type of air ...
2
votes
1answer
170 views

Is it possible for crew oxygen to exacerbate a flight deck fire?

Crew oxygen is, as I understand it, a very high percentage of purity. Oxygen-enriched air acts as an accelerant to a fire, causing things to ignite which wouldn't in ordinary air, and making fire ...
3
votes
3answers
10k views

Under what conditions would a helicopter be allowed to fly at low altitude over populated areas?

Yesterday, the Department of Energy was flying a military helicopter at low altitudes over Boston and the surrounding area as part of an experiment of some type to measure radiation. I saw one of ...
44
votes
6answers
9k views

Is a weak battery a valid reason to reject a rented aircraft?

Today I had rented a Piper Archer III for a local flight. After taxing to the fuel and filling up, I went to start the plane again and it did not want to turn over. This particular plane is somewhat ...
11
votes
1answer
1k views

What are the design parameters for airliner safety?

Airliners designed to carry multiple airfare paying passengers are regulated by CFR 14 Part 25, and by EASA CS-25. The design regulations are such that the probability of a catastrophic failure with ...
1
vote
1answer
292 views

What is this loose object above the flap fairing? [duplicate]

During my flight, I noticed a loose object above one of the flap fairings. You can see it in this video: https://imgur.com/wCPSEem. Is it normal or should I notify the airline? People pointed out to ...
6
votes
2answers
307 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 ...
-4
votes
1answer
201 views

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 ...
4
votes
3answers
2k views

What are the advantages of Chemical Oxygen Generation over Gaseous Canisters on board of aircrafts?

I'm looking to get a bit of info on Chemical Oxygen generation, especially as done on aircraft. I understand the process of Chemical Oxygen Generation. I'm also aware that weight for weight it ...
1
vote
0answers
75 views

Are tiltrotor planes less safe than conventional propellor planes?

I got interested in Tiltrotor type of airplanes and was reading up about some specific models, the AgustaWestland AW609 and the Bell Boeing V-22 Osprey. Both planes have a history of quite a few ...
3
votes
2answers
194 views

Eviation Alice Powerplant Placement

I saw an article from the BBC about the Eviation Alice this morning that left me puzzled. The design is a tail wheel tri-motor with the power plants located in a pusher configuration at the wing tips ...
47
votes
3answers
24k views

What is the technique or procedure to disable/disengage the MCAS on Boeing 737 Max 8 & 9 Aircraft? [closed]

With regard to the recent crashes involving the Boeing 737 Max 8 aircraft, where according to preliminary reports, it appears to be related to the MCAS, which is a safety system that pushes the nose ...
34
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6answers
36k views

Why does the Boeing 737 have 5 x the passenger fatalities of the Airbus 320?

I thought I'd compare the accident rates of these two similar, competing, very successful aircraft. ...
3
votes
1answer
138 views

Is there a Risk of Tail Tipping during Push-back of a passenger aircraft?

I remember that there were countless incidents occurred in which the aircraft sits on the tail as the aircraft was heavily loaded at the back of the cargo and/or cabin compartments or the cargo ...
2
votes
1answer
355 views

Does a no-touch policy really work?

In Boeing 787 and Airbus 350 aircrafts, more than half of the aircraft body is made of composite material. The composite structure of the fuselage does not indicate the damage when the body is ...
5
votes
1answer
427 views

Are there any safety hazards when testing the F-16's fire control radar on the ground?

What are the procedures for ground testing an aircraft's fire control radar - for the F-16 or any other aircraft - and are there safety hazards associated with exposures to humans? Most importantly, ...
19
votes
6answers
10k views

What are the ways to keep the birds away from airfields?

I know bird strikes are a major issue for many airports, and that measures are taken to keep birds away. There are some obvious things airports can do like not to have any stray garbage, food, etc. in ...
2
votes
3answers
452 views

In modern commercial aircraft, is it possible for pilot inputs to exceed the tolerable structural loads?

It seems that modern fly by wire systems should / could limit pilot inputs to prevent structural damage. For example, American Airlines 587: From the NTSB report of the accident: The ...
13
votes
2answers
2k views

Would an A320 override the autothrottle due to an erroneous radio-altimeter?

The pilots of Turkish Airlines Flight 1951 had multiple issues with the auto-throttle setting itself to idle during approach: despite manually adding throttle, the plane stalled and crashed before ...
2
votes
1answer
761 views

Why is there always a fire truck present before refuelling?

Whenever I fly within Europe, I notice there is always a fire truck present for refuelling before takeoff. Is this standard procedure for every flight in commercial aviation? If yes, is this a global ...
4
votes
1answer
444 views

Why did this pilot have his single-engine license revoked?

5 minutes into this video, a commercial Indonesian pilot is shown performing a very tame version of a parabolic flight path as performed by zero-gravity flights, in a Cessna 172. This video has over ...
0
votes
1answer
119 views

Can I fly a paramotor after learning on a paraglider?

This video has inspired me to spend next week doing a 6 day paragliding course. The only downside is the school near me don't teach paramotoring. Could I buy (and safely use/self-teach) a paramotor ...
23
votes
4answers
14k views

How do commercial pilots send distress signals?

If a commercial jet is in trouble, how does a pilot send a signal indicating distress? Does it take long? For instance, behind reception desks in many institutions and executive offices, there's a ...
-3
votes
3answers
124 views

Is this safety ranking of different aviation methods accurate? [closed]

I'm compiling a list of essentially "Different ways a human can fly" and then ranking them in order of safest to most dangerous. This is my final list, is it statistically (and practically) accurate? ...
22
votes
3answers
7k views

How is it safe for helicopters and Ospreys to refuel in mid-air?

How do military helicopters like the Blackhawk and CH-53, as well as the V-22 Osprey, perform mid-air refueling without their rotor blades (periodically and accidentally) contacting the drogue or fuel ...
28
votes
3answers
4k views

Are grass strips more dangerous than tarmac?

There are a couple of flight schools near me. One is at a large airport, they use Piper Tomahawks primarily to teach. Naturally, they use well maintained, tarmac runways to takeoff and land. This ...
5
votes
1answer
239 views

Is it normal for a Boeing 757 engine to bounce under its fairing?

Earlier this week I was on a 757 flight from SFO to JFK and the right engine was bouncing under the fairing under mild turbulence, and really moving 2+ cm under moderate turbulence. Is that in any way ...
7
votes
2answers
2k views

Will dual-learning in a glider make my airplane learning safer?

This question got me thinking, would attending gliding lessons at the same time as my airplane training make me safer in a small plane or microlight?
12
votes
3answers
3k views

Does Nitrogen inside commercial airliner wheels prevent blowouts on touchdown?

I just watched the first episode of Inside Mighty Machine where civil engineer-turned-host, Chad Zdenek, discussed innovations of the 747. One innovation he discussed was the increased number of ...
7
votes
1answer
168 views

How can I find out if the FAA has ever sanctioned a pilot?

Is there any easy way to check to see if a CFI or commercial pilot has had past problems with the FAA? The question came to me after an old thread in one of the aviation forums pointed me to this ...
0
votes
1answer
201 views

What are the requirements for aircraft marker cones?

What are the requirements on aircraft marker cones (a.k.a. safety cones) according to IATA IGOM-96, i.e. size & weight?
0
votes
0answers
56 views

what are some of the effects of breaking the sound barrier? [duplicate]

I have tried googling it, and nothing came up, please help! I am trying to figure out what happens after a jet/aircraft breaks the sound barrier.