Who's Online

We have 1368 guests online

Live Traffic Feed

Life in the Skies

'A Local Bestseller!'

What Tony says
(See here)
and Book Launch video here
 
What others say

Les Posen
(See
here)

Yvonne Lee
(See
here)

Louisa Lim & Allan Koay
(See
here)

Aireen Omar, Asran & Bo Lingam
(See
here)

38 Readers' Comments
(See here)

Get an autographed copy here

AMAZON.COM  -  To Order, please Click here 

(eBook) Kindle edition - please Click here

Latest Comment

Thunderstorms and th
Hi Captain Lim, I would like to know if there ha

What happens if I ge
I have seen a comment from a Flight attendant that

What are the eyesigh
Captain, I am in class 11 in India and want to bec

What are the eyesigh
PLEASE stop asking about your eyes!!! Read the art

Vomiting on long hau
I have traveled a lot (almost 2 million miles) the

Can you become an ai
Hi captain , I had an accident 15 yrs ago and ha

Does a jet aircraft
Reading through the comments was both entertaining

Does a jet aircraft
So many nonsense here... Earth isn't flat. Period.

What are the cruisin
"how in the hell can you reach JFK if you leave fr

What are the eyesigh
tjsoihsdojfsioufs f post

Paperback Version

 For Local Availability - Check Here
 
Home > Air Turbulence > Hurt by Wake Turbulence
Hurt by Wake Turbulence
Weather - Air Turbulence
Saturday, 13 October 2012 16:24

Airbus A380 Wake Turbulence

Dear Capt Lim,

What does weighted turbulence means?

I am a Flight Attendant who got hurt during turbulence and the Captain's report used that term.

Can you tell me more about it?

Diana.

Hi Diana,

I have not heard of this term ‘weighted turbulence’ but I believe you probably misheard it. It is more likely ‘wake turbulence’ that your captain was referring to.

Wake turbulence is not caused by nature but created by another aircraft flying in front. Generally, any aircraft flying in front will cause disturbance to the airflow behind that ranges from minor to severe in intensity - the bigger the airplane ahead, the greater the wake turbulence.

For instance, air traffic controller will impose a separation between each category of aircraft taking off or landing on the runway based on the following FAA regulations:-

• Super - A separate designation that currently only refers to the Airbus A380.
• Heavy - Aircraft capable of takeoff weights of 140,000 kg or more.
• Large - Aircraft of more than 19,000 kg
• Small – Aircraft of 19,000 kg or less.

So an aircraft of a lower category must not be allowed to take off less than two minutes behind an aircraft of a higher category. If the following aircraft does not start its take-off roll from the same point as the preceding aircraft, this is increased to three minutes.

Additionally there are also distance separation between the aircraft as below:-

Preceding aircraft Following aircraft  Minimum radar separation
Super Super 4 NM
  Heavy 6 NM
  Large 7 NM
  Small 8 NM
Heavy Heavy 4 NM
  Large 5 NM
  Small 6 NM
Large Small 5 NM


Sometimes a plane can encounter wake turbulence during the cruise, climb or descent at high level due to the changing winds at the particular level.

On November 12, 2001, an American Airlines Airbus A300 with 267 passengers crashed shortly after take-off from John F. Kennedy International Airport, New York.

The Airbus A300 took off immediately after a Japan Airlines Boeing 747-400 on the same runway. It flew into the larger jet's wake turbulence.

Investigation revealed that the first officer made an error in handling the plane during the turbulent air encounter. As a result, his over controlling of the rudders stressed the aircraft's fin (vertical stabilizer) and eventually snapped it off entirely, causing the aircraft to crash.

PS. To check for any latest updates or postings, you can follow my new Twitter at @CaptKHLim


Wake Turbulence Avoidance


Caution! Wake Turbulence

Trackback(0)

TrackBack URI for this entry

Comments (0)

Subscribe to this comment's feed

Write comment

smaller | bigger

busy
 

Paperback Version

 For Local Availability - Check Here

Recommended By..


LIFE IN THE SKIES

'A Local Bestseller!'

Recommended by

Patrick Smith
Boston USA
(See
here)

Capt Meryl Getline
ex-United Airlines USA
(See
here)

Capt Doug Morris
Canadian Airlines
(See
here)

Capt  Robert J Boser
ex-United Airlines USA
(See
here)

38 Readers' Comments
(See here)

Get an autographed copy here

AMAZON.COM  -  To Order, please Click here 

(eBook) Kindle edition - please Click here

View Book Launch video here

Follow me

@CaptKHLim

Like What You Read?


If you like what you read, more stories are found in my book LIFE IN THE SKIES (Preview here) and you can purchase a copy here. To check for any latest updates or postings, you can follow my Twitter at @CaptKHLim or Facebook here

MH 370 Interviews

Click here to View

10 Most Popular Posts



Disclaimer | Privacy
2004 - 2011 © AskCaptainLim.com | Site Concept by eQuilec.com