TravelsUK
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Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 4:57 pm

What is the purpose of the single 'ping' normally heard in the cabin about 5 seconds or so after the aircraft rotates on take off?

Many thanks in advance to anyone who can answer something that has intrigued me for a long time!
 
freeze3192
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 6:24 pm

Depends on the airline. At my airline, it lets the FA know to make an announcement stating that the use of approved portable electronic devices is allowed.
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KingFriday013
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 6:56 pm

On Airbus planes it's to indicate that the gear is up.

-J.
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bond007
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 7:31 pm

Quoting freeze3192 (Reply 1):
At my airline, it lets the FA know to make an announcement stating that the use of approved portable electronic devices is allowed.

Hopefully not 5 seconds after takeoff!

Jimbo
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vikkyvik
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 8:17 pm

Quoting bond007 (Reply 3):
Quoting freeze3192 (Reply 1):
At my airline, it lets the FA know to make an announcement stating that the use of approved portable electronic devices is allowed.

Hopefully not 5 seconds after takeoff!

That one usually happens at 10,000 feet, I believe.
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DocLightning
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 8:37 pm

Quoting KingFriday013 (Reply 2):
On Airbus planes it's to indicate that the gear is up.

Why would Airbus want the passengers to know that?

Oddly, on HA A330's (not sure about their 767's) immediately after the wheels leave the ground, a recorded announcement plays telling people that the Fasten Seatbelt sign has been turned on and that they should return to their seats. This strikes me as a rather odd time to play that announcement. Most other airlines do not do this.
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Tristarsteve
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 8:41 pm

Quoting DocLightning (Reply 5):
Why would Airbus want the passengers to know that?

It used to be when the no-smoking sign went off.
 
Mir
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 8:45 pm

Quoting TravelsUK (Thread starter):
What is the purpose of the single 'ping'

For "range".

signed,

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In all seriousness, though, it's going to vary based on what airplane you're on and what airline you're with. My bet would be a signal to the cabin crew that the takeoff phase is over and they can unstrap themselves and start doing whatever it is that they need to do.

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cedarjet
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 8:50 pm

Quoting DocLightning (Reply 5):
Why would Airbus want the passengers to know [the gear is up]?

Other than those of us who have just read this thread, there is no way of the passengers knowing that's what it means! It's just a random DING, one of many. How could the punters possibly divine from that DING that it means, the gear is up?
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vikkyvik
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 9:21 pm

Quoting Mir (Reply 7):
For "range".

signed,

Made me laugh out loud!
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shamrock137
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 9:43 pm

Quoting Tristarsteve (Reply 6):
It used to be when the no-smoking sign went off.

Their have been other threads on here which stated it is also connected to the emergency lights. When the ding is herd the emergency exit lights also extinguish. Newer aircraft have had this system disabled, and I know that on Virgin Americas Airbus' no chime is herd.
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freeze3192
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 9:46 pm

Quoting bond007 (Reply 3):
Quoting bond007 (Reply 3):

Hopefully not 5 seconds after takeoff!

Jimbo
Quoting vikkyvik (Reply 4):

That one usually happens at 10,000 feet, I believe.

It occurs at acceleration height for us which is typically 1000 ft agl. This is where the FA's also say welcome aboard, read our inflight magazie, frequent flyer program, details on inflight service etc.


EDIT:
Forgot to mention our chime out of 10000 ft is for sterile only. Another chime (single tone) at approx 10 minutes to touchdown tells the FA to prepare the cabin for landing and to have pax turn off all electronic devices.

[Edited 2012-06-11 14:49:13]
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BE77
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RE: Purpose Of The Single 'ping' After Take Off?

Mon Jun 11, 2012 9:47 pm

Quoting Mir (Reply 7):
For "range".

Every now and again we need a "Like" button.
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e38
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RE: Purpose Of The Single 'ping' After Take Off?

Tue Jun 12, 2012 1:53 am

Quoting TravelsUK (Thread Starter), "What is the purpose of the single 'ping' normally heard in the cabin about 5 seconds or so after the aircraft rotates on take off?"


KingFriday003, "On Airbus planes it's to indicate that the gear is up."
Joshua Z, that's partially true; but there's more to it than that.

Nick, this is what the ding really means on the Airbus A-319 and A-320 aircraft.

In the flight deck, the switches for the "no smoking" sign and Emergency lighting are three position switches--OFF, ON, and AUTO. In the ON position, the no smoking signs are illuminated and emergency lighting is armed. In the OFF position, the no smoking signs are off and emergency lighting is deactivated. However, in the AUTO position-which is the normal position for both switches-the no smoking signs are illuminated when the landing gear is down (and the emergency exit lights are illuminated; emergency lighting system armed) and the no smoking signs are extinguished when the landing gear is up (and emergency exit lights turn off; although the emergency lighting system remains armed). After takeoff, when the landing gear is retracted, the no smoking signs turn off and emergency exit lights turn off (emergency lighting system is still armed) and there is a "ping" or "ding" associated with this transition in modes. Normally gear retraction occurs when there is positive rate of climb (IVSI positive in the up direction) and increase in altitude. This would probably be about 5 seconds after takeoff. The reverse is true when the landing gear is lowered--the no smoking signs and emergency exit lights illuminate, also accompanied by a "ping" or "ding." Gear extension varies on every approach depending on conditions, but in general it will occur approximately 4 to 5 miles from the runway (sometimes more) which would be around two to two and one half minutes prior to landing.

Hope that makes sense.

e38

[Edited 2012-06-11 19:14:39]
 
bond007
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RE: Purpose Of The Single 'ping' After Take Off?

Tue Jun 12, 2012 2:08 am

Quoting e38 (Reply 13):
Goodness, what speculation on everyone's part!

Not really, they were correct!

The other posts had little to do with a chime immediately after takeoff  

Jimbo
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je89_w
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RE: Purpose Of The Single 'ping' After Take Off?

Tue Jun 12, 2012 3:21 am

Sounds like the OP is referring to the typical Airbus "ping" you hear after lifting off, which I believe is the fasten seatbelt chime (see quote below). I realize the fasten seatbelt sign is already on, but it seems like the chime nevertheless goes off once the gear is being raised.

Quoting DocLightning (Reply 5):
Oddly, on HA A330's (not sure about their 767's) immediately after the wheels leave the ground, a recorded announcement plays telling people that the Fasten Seatbelt sign has been turned on and that they should return to their seats. This strikes me as a rather odd time to play that announcement. Most other airlines do not do this.

As HA has pre-recorded announcements (including after the fasten seatbelt chime), this announcment automatically plays once the gear goes up and the chime goes off. They did remove the fasten seatbelt announcement after liftoff on at least one of their A332s.

You won't hear this on the B767.
 
TravelsUK
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RE: Purpose Of The Single 'ping' After Take Off?

Tue Jun 12, 2012 5:41 am

Quoting TravelsUK (Thread starter):
In the flight deck, the switches for the "no smoking" sign and Emergency lighting are three position switches--OFF, ON, and AUTO. In the ON position, the no smoking signs are illuminated and emergency lighting is armed. In the OFF position, the no smoking signs are off and emergency lighting is deactivated. However, in the AUTO position-which is the normal position for both switches-the no smoking signs are illuminated when the landing gear is down (and the emergency exit lights are illuminated; emergency lighting system armed) and the no smoking signs are extinguished when the landing gear is up (and emergency exit lights turn off; although the emergency lighting system remains armed). After takeoff, when the landing gear is retracted, the no smoking signs turn off and emergency exit lights turn off (emergency lighting system is still armed) and there is a "ping" or "ding" associated with this transition in modes. Normally gear retraction occurs when there is positive rate of climb (IVSI positive in the up direction) and increase in altitude. This would probably be about 5 seconds after takeoff. The reverse is true when the landing gear is lowered--the no smoking signs and emergency exit lights illuminate, also accompanied by a "ping" or "ding." Gear extension varies on every approach depending on conditions, but in general it will occur approximately 4 to 5 miles from the runway (sometimes more) which would be around two to two and one half minutes prior to landing.

Many thanks! I guessed it may have gad something to do with the Non Smoking sign being switched off (back in the day of course!) interestingly I notice it more on on Airbus aircraft but also on some Boeing aircraft too.

Will listen for it again on Thursday when I'm on a Boeing...
 
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RE: Purpose Of The Single 'ping' After Take Off?

Tue Jun 12, 2012 12:06 pm

Quoting Mir (Reply 7):
For "range".

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RE: Purpose Of The Single 'ping' After Take Off?

Tue Jun 12, 2012 8:22 pm

Quoting Mir (Reply 7):
For "range".

LOL, first thing that came to my mind!!
 
prebennorholm
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RE: Purpose Of The Single 'ping' After Take Off?

Wed Jun 13, 2012 12:58 am

Quoting KingFriday013 (Reply 2):
On Airbus planes it's to indicate that the gear is up.

That explains why this ping was absent on the Caravelle.

Nobody was left in doubt that the landing gear had come up on a Caravelle.

Except first time passengers. They imagined that an engine had exploded, or a wing had come off, or such.

When on a Caravelle, then I always watched the passengers sitting above the wing, and noticed the chock effect on the first-timers when the gear slammed into place, shaking the whole plane and giving a real kick in your behind when sitting near the MLG. Since I was a lot younger at that time, then I thought that it was great fun.
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Starlionblue
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RE: Purpose Of The Single 'ping' After Take Off?

Wed Jun 13, 2012 1:27 am

Quoting prebennorholm (Reply 19):
That explains why this ping was absent on the Caravelle.

Nobody was left in doubt that the landing gear had come up on a Caravelle.

Except first time passengers. They imagined that an engine had exploded, or a wing had come off, or such.

When on a Caravelle, then I always watched the passengers sitting above the wing, and noticed the chock effect on the first-timers when the gear slammed into place, shaking the whole plane and giving a real kick in your behind when sitting near the MLG. Since I was a lot younger at that time, then I thought that it was great fun.

Haha. Yes I remember this. It was awesome!

The Jungle Jets also have pretty loud gear if you sit right over it. KA-THUNK!
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N243NW
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RE: Purpose Of The Single 'ping' After Take Off?

Wed Jun 13, 2012 4:17 am

Quoting Starlionblue (Reply 20):
The Jungle Jets also have pretty loud gear if you sit right over it. KA-THUNK!

There's also a pretty significant bang, followed by sudden wind noise, on the EMB135/140/145s when the gear extension sequence begins on approach. Not sure if it's the up-locks releasing or the doors opening (or a combination of the two). Sounds cool.
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Starlionblue
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RE: Purpose Of The Single 'ping' After Take Off?

Wed Jun 13, 2012 4:36 am

Quoting N243NW (Reply 21):
Quoting Starlionblue (Reply 20):
The Jungle Jets also have pretty loud gear if you sit right over it. KA-THUNK!

There's also a pretty significant bang, followed by sudden wind noise, on the EMB135/140/145s when the gear extension sequence begins on approach. Not sure if it's the up-locks releasing or the doors opening (or a combination of the two). Sounds cool.

Heh. I'd forgotten that. Don't fly a lot nowadays but used to get on the little JJs every few weeks.
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HA_DC9
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RE: Purpose Of The Single 'ping' After Take Off?

Wed Jun 13, 2012 4:48 am

Quoting DocLightning (Reply 5):
Oddly, on HA A330's (not sure about their 767's) immediately after the wheels leave the ground, a recorded announcement plays telling people that the Fasten Seatbelt sign has been turned on and that they should return to their seats.
Quoting je89_w (Reply 15):
As HA has pre-recorded announcements (including after the fasten seatbelt chime), this announcment automatically plays once the gear goes up and the chime goes off. They did remove the fasten seatbelt announcement after liftoff on at least one of their A332s.

Correct, the announcement has been or is in process of being removed on the A332s. I believe there are also a couple of Youtube videos out there of recent HA A330 takeoffs with the announcement no longer playing with the chime after t/o.
 
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RE: Purpose Of The Single 'ping' After Take Off?

Wed Jun 13, 2012 6:45 am

Quoting N243NW (Reply 21):
There's also a pretty significant bang, followed by sudden wind noise, on the EMB135/140/145s when the gear extension sequence begins on approach. Not sure if it's the up-locks releasing or the doors opening (or a combination of the two). Sounds cool.

If you're sitting right above the gear in a CRJ-200, it sounds like the bottom of the plane just detached when the uplocks release!
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zeke
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RE: Purpose Of The Single 'ping' After Take Off?

Wed Jun 13, 2012 6:59 am

Quoting DocLightning (Reply 5):
Why would Airbus want the passengers to know that?

It for the cabin crew, it also happens on approach when the gear is extended.

Quoting Shamrock137 (Reply 10):
Their have been other threads on here which stated it is also connected to the emergency lights. When the ding is herd the emergency exit lights also extinguish. Newer aircraft have had this system disabled, and I know that on Virgin Americas Airbus' no chime is herd.

The actual behavior can be customized by programming, most airlines have the emergency exit signs near the doors illuminated when the gear is down, when retracted this lights extinguish or dim.
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