Seat belt sign

10,000 AGL (Above Ground Level)
I don’t do that, there could be a unexpected turbulence

@Bill_Jones… ALL. MaxSez: At some point some of you Bloviators will stop guessing or Speculating about aviation Tech Fact. “Seat Belt” use on passenger aircraft is regulated by the US Code & the FAR. Here is the Citation;

14 CFR § 91.517 - Passenger information.

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§ 91.517 Passenger information.

(a) Except as provided in paragraph (b) of this section, no personmay operate an airplane carrying passengers unless it is equipped with signs that are visible to passengers and flight attendants to notify them when smoking is prohibited and when safety belts must be fastened. The signs must be so constructed that the crew can turn them on and off. They must be turned on during airplane movement on the surface, for each takeoff, for each landing, and when otherwise considered to be necessary by the [pilot in command](

(b) The pilot in command of an airplane that is not required, in accordance with applicable aircraft and equipment requirements of this chapter, to be equipped as provided in paragraph (a) of this section shall ensure that the passengers are notified orally each time that it is necessary to fasten their safety belts and when smoking is prohibited.

© If passenger information signs are installed, no passenger or crewmember may smoke while any “no smoking” sign is lighted nor may any passenger or crewmember smoke in any lavatory.

(d) Each passenger required by § 91.107(a)(3) to occupy a seat or berth shall fasten his or her safety belt about him or her and keep it fastened while any “fasten seat belt” sign is lighted.

(e) Each passenger shall comply with instructions given him or her by crewmembers regarding compliance with paragraphs (b), ©, and (d) of this section.

[Doc. No. 26142, 57 FR 42672, Sept. 15, 1992]


you what? lol

I don’t know what all this obsession with FL100 is! On most flights in narrowbody aircraft I’ve flown on, the seatbelt sign is turned off after the initial departure turn out of the airport while climbing to cruise. That’s sometimes only 30 seconds after wheels up. Do it when you feel comfortable - no turbulence and no significant turns up ahead in your flight plan.


when i reach fl100 i do a quick ding ding
same thing as i begin my decent, and as i turn final for landing

For the sake of realism, i liked that

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Yes. Mine only. Nobody else is allowed to use it.

Oh, this is SQ21? You should have gone before departure!

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I am not going to lie, I forget to turn them off 😑

I usually forget about it, but after all, Snoman Air doesn’t event have lavatories, I removed them from the plane! I entertain myself by watching my virtual passengers trying to hold it in for a 10 hour flight


How about your copilot?

Well I usually turn it off when I cross 17000ft. And turn it on at the same altitude during descent

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Here’s what I don’t get - smoking is prohibited on airplanes AT ALL TIMES so why do they say that…

I believe in real life, it is turned of at 10,000, and on short to medium haul flights, it is turned back on passing through 15,000ft in the descent or or on long haul, just before desent.

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I actually agree with @Maxmustang here as this is really dependent on many factors and in the end decided by the operating crew.

Nonetheless there’s another topic from January with the way I (mostly) do it for consideration:

I feel really bad after accidently leaving it on for a 12hr flight, what a mess!

And they all went into the lavatory at the same time

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I believe when passing 10,000ft usually.

when i hit cruise and calm winds

If you are flying a US based airline never turn it off

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