Dubai's airport operator is to ban older-generation aircraft from the hub later this year, bringing it into line with modern noise and emissions standards.
Cargo aircraft failing to meet Chapter 3 standards will be banned at Dubai International Airport from 31 October, the beginning of the winter season, and a ban on passenger aircraft will follow on 27 March 2011.
But the new Al-Maktoum International Airport will allow Chapter 1 and Chapter 2 aircraft to continue operating until 1 April 2012. The airport operator says this will ensure carriers are "not unreasonably affected".
Dubai Airports chief Paul Griffiths says the limitations are an "incremental step" which will "reduce the airport's environmental footprint".