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Purpose Of The Single 'ping' After Take Off?  
User currently offlineTravelsUK From United Kingdom, joined Dec 2007, 134 posts, RR: 0
Posted (2 years 2 months 1 week 4 days 15 hours ago) and read 7362 times:

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!

25 replies: All unread, showing first 25:
 
User currently offlinefreeze3192 From United States of America, joined Oct 2006, 164 posts, RR: 0
Reply 1, posted (2 years 2 months 1 week 4 days 14 hours ago) and read 7287 times:

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.


"A passenger bets his life that his pilot is a worthy heir to an ancient tradition of excellence and professionalism."
User currently offlineKingFriday013 From United States of America, joined May 2007, 1296 posts, RR: 9
Reply 2, posted (2 years 2 months 1 week 4 days 13 hours ago) and read 7234 times:

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

-J.



Tho' I've belted you an' flayed you, By the livin' Gawd that made you, You're a better man than I am, Gunga Din!
User currently offlinebond007 From United States of America, joined Mar 2005, 5408 posts, RR: 8
Reply 3, posted (2 years 2 months 1 week 4 days 13 hours ago) and read 7179 times:

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



I'd rather be on the ground wishing I was in the air, than in the air wishing I was on the ground!
User currently onlinevikkyvik From United States of America, joined Jul 2003, 9903 posts, RR: 26
Reply 4, posted (2 years 2 months 1 week 4 days 12 hours ago) and read 7107 times:
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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.



"Two and a Half Men" was filmed in front of a live ostrich.
User currently offlineDocLightning From United States of America, joined Nov 2005, 19509 posts, RR: 58
Reply 5, posted (2 years 2 months 1 week 4 days 12 hours ago) and read 7066 times:

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.


User currently offlineTristarsteve From Sweden, joined Nov 2005, 3999 posts, RR: 34
Reply 6, posted (2 years 2 months 1 week 4 days 12 hours ago) and read 7061 times:

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

It used to be when the no-smoking sign went off.


User currently offlineMir From United States of America, joined Jan 2004, 21555 posts, RR: 55
Reply 7, posted (2 years 2 months 1 week 4 days 12 hours ago) and read 7057 times:

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

For "range".

signed,

http://www.oscars.org/events-exhibitions/events/2010/images/hero719_hunt-for-red-october1.jpg

  

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.

-Mir



7 billion, one nation, imagination...it's a beautiful day
User currently offlinecedarjet From United Kingdom, joined May 1999, 8086 posts, RR: 54
Reply 8, posted (2 years 2 months 1 week 4 days 12 hours ago) and read 7049 times:

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?



fly Saha Air 707s daily from Tehran's downtown Mehrabad to Mashhad, Kish Island and Ahwaz
User currently onlinevikkyvik From United States of America, joined Jul 2003, 9903 posts, RR: 26
Reply 9, posted (2 years 2 months 1 week 4 days 11 hours ago) and read 7018 times:
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Quoting Mir (Reply 7):
For "range".

signed,

Made me laugh out loud!



"Two and a Half Men" was filmed in front of a live ostrich.
User currently offlineShamrock137 From United States of America, joined Jul 2005, 141 posts, RR: 0
Reply 10, posted (2 years 2 months 1 week 4 days 11 hours ago) and read 6978 times:

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.



Time to spare? Go by air!
User currently offlinefreeze3192 From United States of America, joined Oct 2006, 164 posts, RR: 0
Reply 11, posted (2 years 2 months 1 week 4 days 11 hours ago) and read 6965 times:

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]


"A passenger bets his life that his pilot is a worthy heir to an ancient tradition of excellence and professionalism."
User currently offlineBE77 From Canada, joined Nov 2007, 455 posts, RR: 0
Reply 12, posted (2 years 2 months 1 week 4 days 11 hours ago) and read 6965 times:

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

Every now and again we need a "Like" button.



Tower, Affirmitive, gear is down and welded
User currently offlinee38 From United States of America, joined May 2008, 335 posts, RR: 0
Reply 13, posted (2 years 2 months 1 week 4 days 7 hours ago) and read 6793 times:

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]

User currently offlinebond007 From United States of America, joined Mar 2005, 5408 posts, RR: 8
Reply 14, posted (2 years 2 months 1 week 4 days 6 hours ago) and read 6776 times:

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



I'd rather be on the ground wishing I was in the air, than in the air wishing I was on the ground!
User currently offlineje89_w From United States of America, joined Mar 2002, 2360 posts, RR: 9
Reply 15, posted (2 years 2 months 1 week 4 days 5 hours ago) and read 6709 times:
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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.


User currently offlineTravelsUK From United Kingdom, joined Dec 2007, 134 posts, RR: 0
Reply 16, posted (2 years 2 months 1 week 4 days 3 hours ago) and read 6616 times:

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...


User currently offlinejollo From Italy, joined Aug 2011, 213 posts, RR: 0
Reply 17, posted (2 years 2 months 1 week 3 days 20 hours ago) and read 6340 times:

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

Marko Ramius forever!


User currently offlineSmittyOne From , joined Dec 1969, posts, RR:
Reply 18, posted (2 years 2 months 1 week 3 days 12 hours ago) and read 6043 times:

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

LOL, first thing that came to my mind!!


User currently offlineprebennorholm From Denmark, joined Mar 2000, 6420 posts, RR: 54
Reply 19, posted (2 years 2 months 1 week 3 days 7 hours ago) and read 5904 times:

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.



Always keep your number of landings equal to your number of take-offs, Preben Norholm
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17015 posts, RR: 67
Reply 20, posted (2 years 2 months 1 week 3 days 7 hours ago) and read 5890 times:

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!



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineN243NW From United States of America, joined Jul 2003, 1630 posts, RR: 20
Reply 21, posted (2 years 2 months 1 week 3 days 4 hours ago) and read 5798 times:

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.



B-52s don't take off. They scare the ground away.
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17015 posts, RR: 67
Reply 22, posted (2 years 2 months 1 week 3 days 4 hours ago) and read 5785 times:

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.



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineHA_DC9 From United States of America, joined Jul 1999, 653 posts, RR: 1
Reply 23, posted (2 years 2 months 1 week 3 days 4 hours ago) and read 5777 times:

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.


User currently offlineXFSUgimpLB41X From United States of America, joined Aug 2000, 4194 posts, RR: 37
Reply 24, posted (2 years 2 months 1 week 3 days 2 hours ago) and read 5732 times:

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!



Chicks dig winglets.
User currently offlinezeke From Hong Kong, joined Dec 2006, 8998 posts, RR: 75
Reply 25, posted (2 years 2 months 1 week 3 days 1 hour ago) and read 5720 times:

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.



We are addicted to our thoughts. We cannot change anything if we cannot change our thinking – Santosh Kalwar
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