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Questions tagged [cabin]

The enclosed space within most aircraft where things like crew, passengers, and baggage live.

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25
votes
3answers
115k views

What is this white smoke like thing, seen inside the cabin before takeoff?

I saw this quite thick white smoke like thing in the cabin in my last flight, before takeoff that is, while it was taxiing and loading passengers: Video Please watch in HD to best notice the ...
17
votes
2answers
6k views

Do airliner cabin filters trap viruses or other pathogens?

I understand that half the air in an airliner is re-circulated (per How much air is recirculated (vs. bleed air injected) in modern airliners cabin?). Of this 50% re-circulated air, what it's the ...
15
votes
1answer
3k views

What is that ceiling compartment of a Boeing 737?

Does somebody know what that big box in the roof of the 737 cabin is?
12
votes
5answers
5k views

What is the viability of stacking passengers in an airplane cabin?

I've came across on youtube a new design for stacking passengers in an airplane cabin, that looks at first sight interesting. What would be the advantages and drawbacks of such a design? Why this is ...
10
votes
1answer
2k views

Who invented the cabin chime? What aircraft was the first to use it?

While looking for one to set as my ringtone, I became interested in the history of the cabin chime - the "bing-bong" noise heard on practically every commercial airliner today. I've found tons of ...
9
votes
7answers
12k views

How do the cabin noise levels of the A380 and the 777 300 ER compare?

I couldn't find any official comparison for noise level (dB) in Airbus A380 versus the Boeing 777 300 ER. Does anyone have some info about it? Which one is better in terms of acoustic isolation?
9
votes
3answers
11k views

Can a paying passenger ride in one of the cabin jumpseats?

Is there any regulation that prohibits passengers from using a cabin jumpseat (normally used by cabin crew) if there is no passenger seat available? Like the two shown below. In other words, can any ...
7
votes
1answer
380 views

What's with this non-exit Exit sign on Delta CRJs?

I have the pleasure of frequently flying Delta (i.e. Delta Connection) flights on CRJ-700 and CRJ-900 aircraft. All of them have a bogus EXIT sign between First Class and the main cabin: This is ...
7
votes
1answer
1k views

Where is the camera in the A320?

On the A320 family there are circuit breaker panels in the cabin between the exits. On the 2000VU panel there is a "camera" circuit breaker (C5 position): Top: Source -- Bottom: A320 CCOM p165 -- ...
6
votes
2answers
258 views

How is smoke detected in the cabin when flying without passengers?

The Boeing website states that smoke detection devices are not present in the passenger cabin as the passengers/cabin crew are able to detect the smoke: A dedicated smoke detection system is not ...
6
votes
2answers
657 views

How and how often are the oxygen masks in the cabin checked?

Looking at this old answer I can see that oxygen masks check is mandatory for the flight deck. What about passenger masks? Is this check done daily on airliners? How is this check conducted and what ...
5
votes
1answer
3k views

Why do my ears pop if the cabin is pressurized?

Simple question: If a commercial airline cabin is pressurized, why do my ears pop as we ascend and descend? I was always told this was due to a change in pressure, but if the cabin and my body are at ...
5
votes
3answers
605 views

Is the increased humidity on modern jets artificial?

Aircraft manufacturer’s including Boeing and Airbus have emphasised on greater passenger comfort owing to an increase in humidity on newer jets such as the 787 and A350 artificial? Or is it a direct ...
5
votes
2answers
931 views

Why might the crew switch off air conditioning in the cabin of a passenger jet during descent?

I've noticed on some commercial flights (most recently today in an A319) that as the aircraft descends in preparation for landing, the air in the cabin gets hotter. I also noticed that this seems to ...
4
votes
1answer
1k views

What is the cabin noise hertz in typical commercial aircrafts?

In cabin, we hear noises in commercial aircrafts. Wondering if it is in general over or under 100 hz. There should be a band width. Thanks!
4
votes
1answer
745 views

Who controls the cabin air temperature?

I understand the B737-800 has two air conditioning packs that handle the temperature of three zones: the cockpit, the fwd cabin and the aft cabin. I understand that which pack is turned on is ...
4
votes
0answers
58 views

What happens when a person dies during the flight? What kind of procedures exist regarding deceased passenger on board? [duplicate]

I was just reading about a young woman who died on the long haul flight from LA to Melbourne. Heartbreaking. Young life cut short. RIP. But this horrible situation made me wonder about a presence of a ...
3
votes
3answers
2k views

What powers the air-conditioning on commercial planes?

How is the air conditioning system on airliners powered? I expect that the air conditioning is powered by the APU powers, but I wonder if there are other power sources used like the main engines?
3
votes
2answers
607 views

Why does the UH-1 Huey have a hump at the rear of the cabin?

Why does the Huey have this weird hump as shown in the picture? For some system? Why not remove it? https://www.helis.com/h2/uh-1h_seats.jpg
3
votes
2answers
484 views

Is cabin air freshened when a plane is taxiing or on the ground?

I know that commercial aircraft continuously freshen the cabin air when aloft by compressing and cooling the air. Is that true when the aircraft is on the ground, at the gate loading or taxiing?
3
votes
1answer
289 views

Why is this exit indicator placed here?

Some Boeing 737s have this exit indicator in the cabin, attached in a seemingly odd position, next to the overhead bins, instead of in the middle. Why is it placed here?
2
votes
2answers
230 views

What could cause instant nausea when entering larger passenger planes?

This may not be the right forum for this question, but I almost always experience temporary nausea when entering the cabin of a larger passenger plane (e.g. A320). It hits me as soon as I enter the ...
2
votes
1answer
168 views

Is it allowed and/or safe to place objects on the dash in a PA28?

I am told by my maintenance engineer that NOTHING is to be put on the dashboard area above the instrument panel - this is where I keep my DUAL GPS to have an unobstructed view of the sky. It was ...
2
votes
1answer
276 views

Why isn't cabin air quality in airliners directly monitored with sensors?

Airliner air conditioning systems refresh the cabin air volume every couple of minutes. A portion of it is filtered and re-circulated into the cabin, however AFAIK there are no direct cabin air ...
2
votes
1answer
585 views

To which security domain does the Cabin Intercommunication Data System (CIDS) belong?

I've read a lot about Cabin Intercommunication Data System (CIDS) functionalities and features, but yet it is not really clear to me if CIDS is part of the Airline Information Services Domain (AISD), ...
2
votes
0answers
396 views

Why does the FAA ban preboarding passengers from sitting in emergency-exit rows?

Of the several restrictions every U.S. airline passenger knows about regarding who can and can’t sit in an aircraft’s emergency-exit rows (no one under 15, or physically disabled, or travelling with ...
2
votes
0answers
168 views

What is the meaning of the triangular markings in the A320 cabin? [duplicate]

Travelling in a chartered A320 from Titan Airways. Does anyone know what these triangular markings mean? They can be seen on both sides of the cabin, a few rows before and after the emergency exits.
1
vote
2answers
355 views

How Cabin Pressures Are Selected?

The pilot puts the cruise altitude to the FMC and the plane auto adjusts the cabin pressure. I know that but I once heard the cabin pressure is set to three thousand feet. Is it true? Why is the ...
1
vote
1answer
216 views

How much does an airliner cabin elongate at altitude?

How much (about) is a commercial plane's cabin elongated at cruising altitude, due to interior-exterior pressure difference? Of course there should be a slight shrinkage because of temp difference, ...
1
vote
1answer
155 views

Can pressurized aircraft be flown without pressurizing

Are there any pressurized aircraft models which can also be flown without pressurizing the cabin? For example, if there were a short ferry flight, or a flight where the aircraft never got high enough ...
1
vote
1answer
344 views

How did pilots pee on Rutan Voyager?

Rutan Voyager had a very long flight. Did pilots have a separate toilet room for when they needed to relieve themselves? How much room did they have to move around anyways? Is there any visual with ...
1
vote
1answer
220 views

Can audible warnings be heard from the cabin?

When I fly in the front row on an all-economy A320, I can very clearly hear the autopilot disconnect sound shortly before landing. Can passengers in the cabin also hear other warnings like EGPWS (...
1
vote
0answers
142 views

What are typical ratios of galley carts to passengers?

What are typical ratios for the number of galley carts to passengers on a two meal long haul flight for First, Business, Premium Economy and Economy? This is for cabin layout planning. I found one a/c ...
0
votes
1answer
205 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)
0
votes
0answers
89 views

Length from nose to end of flight deck / start of cabin?

I'm trying to estimate this length for the A319-100, B737-700 and A220-300. It is not easy using the drawings, because many cabin drawings don't include the flight deck. I know that it is established ...
-3
votes
1answer
615 views

Why are inflatable pillows not allowed on board? [closed]

Inflatable cushions designed to ensure extra space that children sleep comfortably between the passenger seats are not accepted aboard by most of the airline companies for they can obstruct evacuation ...