Questions tagged [cabin]

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

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How are two seats supposed to fit side by side into a 3 ft 8 in (~1.15 m) wide cabin?

According to GlobalAir, the Cessna P210N "Pressurized Centurion" has a cabin width of 3 ft 8 in (~1.15 m). However are two seats (plus some space inbetween to be able to get through to the ...
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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 ...
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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 ...
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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?
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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, ...
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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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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 ...
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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 ...
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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
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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 ...
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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 ...
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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 ...
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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?
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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!
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15 votes
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What is that ceiling compartment of a Boeing 737?

Does somebody know what that big box in the roof of the 737 cabin is?
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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 ...
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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 ...
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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 ...
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6 votes
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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 ...
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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 (...
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6 votes
2 answers
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 -- ...
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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 ...
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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), ...
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1k 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 ...
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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?
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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.
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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 ...
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5 answers
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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 ...
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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 ...
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26 votes
3 answers
123k 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 ...
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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?
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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 ...
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