Heathrow's new £2.5 billion terminal will open in exactly one year's time, bosses at the UK's biggest airport announced.
Doors on both engines of the plane in last week's Heathrow emergency landing drama had been left unlatched during maintenance.
Passengers at Heathrow have told of their frustration, after facing long queues at border control.
A report out today claims that replacing Heathrow with a new hub airport would leave passengers, taxpayers and business worse off. It says a third London airport runway is essential if capacity is to be increased.
The study will be presented as evidence to the Airports Commission and argues against a new airport in the Thames Estuary, Isle of Grain or Stansted.
Earlier we spoke to John Holland-Kay, development Director at Heathrow.
Heathrow chief executive Colin Matthews said today:
"Britain already has one of the world's most successful international hub airports in Heathrow.
"Expanding Heathrow will put Britain ahead in the global race, connecting UK business to growth more quickly and at less cost to the taxpayer than any other option for new capacity.
"Heathrow is better located for passengers, business and jobs. Why build from scratch at a new hub when we can build on the strength that already exists around Heathrow today?"
Adding capacity at Heathrow would also be better for passengers and for jobs than anew hub airport at Stansted or in the Thames Estuary. Expansion could be delivered around seven years quicker than the time taken to build a new hub airport says the report by Heathrow bosses.
Creating a new airport would increase travel times for 90% of hub passengers, with the economic cost of longer journeys amounting to a possible £26 billion.
Adding capacity at Heathrow would also be better for taxpayers, with a new airport needing around £25 billion of public money, the report claims.
More than 76,000 people directly employed at Heathrow would face re-location or redundancy if Heathrow was replaced by a new airport.
The report also said that the area round Heathrow in west London was home to 202 of the UK's top 300 company headquarters.
Mayor Boris Johnson is one of the leading supporters of a new Thames Estuary airport and vehemently opposes the building of an extra, third, runway at Heathrow.
Labour backed the third runway plan in 2009 but the expansion was scrapped by the coalition Government, which has now set up an Aviation Commission under former CBI chief Sir Howard Davies to look into the whole question of airport capacity.
Today's report has been compiled by Heathrow Airport with architectural and planning consultants AECOM and Quod.
The report will form part of Heathrow's submission to the Davies Commission.The commission will publish its interim report by the end of this year and its final report in the summer of 2015.
Heathrow Airport has revealed when the new Terminal 2 will open. T2 is undergoing a £2.5 billion revamp.
The original terminal was demolished in 2009.
Its replacement will serve 20 million passengers every year.
The official opening date, exactly a year today.
Penny Silvester has been given a first look at the project, and has sent this report from Heathrow.
Bosses at Heathrow Airport are due to announce when the new Terminal 2 will open. The old building was demolished 3 years ago to make way for a new £2.5 billion terminal with the capacity to cope with 20 million passengers a year.
The report said the BA plane had undergone scheduled maintenance the night before the incident, which required opening the fan cowl doors on both engines to check oil levels.
The report noted that the plane manufacturer Airbus had recommended airlines strictly adhere to maintenance standards following previous instances of fan cowl door separation on the A320 "family" of planes, which include the A319 in last week's incident.
The report said that last July Airbus said there had been 32 reported fan cowl door detachments.
On some occasions, significant damage was caused to the aircraft but none of those events resulted in a fire.
"The source of ignition that led to the in-flight fire is still under investigation," the AAIB said.
Engine-covering doors on both engines on the smoke-trailing British Airways plane in last week's Heathrow landing drama had been left unlatched during maintenance, an interim report by the UK Air Accidents Investigation Branch said today.
The British Airways plane in last week's dramatic emergency at Heathrow landed after pilots shut down one engine and the other engine was on fire, according to an official American accident investigation team.
Engine cowls, or coverings, on both the US-made engines of the Oslo-bound Airbus A319 came off and fell on the runway as the plane took off for Oslo last Friday morning, said the US National Transport Safety Board (NTSB).
The pilots reported that they shut down one engine, there was a fuel leak, and that they were returning, the NTSB said on its website .