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When is aircaft classed as 'heavy'?

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When is aircaft classed as 'heavy'?

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Old 9th Jun 2007, 20:46
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When is aircaft classed as 'heavy'?
On reading through these forums i quite often see the term 'heavy' to describe aircraft? When is an aircraft termed as 'heavy'?
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Old 9th Jun 2007, 21:23
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It used to be a Max Take-off Mass of 3000,000lbs but I believe it is now 255,000lbs.
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Old 9th Jun 2007, 21:25
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Heavy Vortex Wake Category = MTOW 136,000 Kg or greater. See:
http://www.ais.org.uk/aes/pubs/aip/pdf/aic/4P188.PDF
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Old 10th Jun 2007, 00:23
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That was a very big aircraft BOAC, 3000,000lbs indeed!
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Old 10th Jun 2007, 07:28
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- whoops!

I did see, however, a reference to something American saying it was now 255,000. Was that implemented anywhere?
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Old 12th Jun 2007, 16:05
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when you scream,cos it's on your foot
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