"Ladies and gentlemen, this is your captain speaking. An indicator in the cockpit is telling us we have a hot undercarriage. We are going to lower the landing gear at cruising altitude to cool it down. You may hear a slight noise, but don't worry - this is normal operating procedure."You would be forgiven for thinking this is a line from a disaster movie, delivered just before a packed airliner spirals earth-bound out of control. But this was real life. It occurred about twenty minutes into a Virgin Atlantic flight from JFK to London Heathrow whilst I was wedged into my economy seat.
The gentle hum of the A340's landing gear deploying was quickly replaced by the loudest "whooshing" noise of turbulent air I have ever heard. A tall ship in a wind tunnel wouldn't make as much noise as this. My mind raced away with me. Was the aircraft going to stall and nosedive? Would the hot undercarriage melt a key electrical wire and ignite a fuel tank? Or were the wheels going to drop off and ruin our landing?
In the end, it was all quite uneventful. The -55oC air temperature quickly did its job and cooled the hot wheels, and the landing gear folded back into the streamlined fuselage. The dull drone of the aircraft engines filled the cabin once more and we continued eastward across the great expanse of the Atlantic.
Flying and I have a love-hate relationship. I love aircraft. I love watching them as they gracefully cut through an azure blue sky or hover in suspended animation on final approach. I have a credit card which earns free flights to anywhere in my home town if I spend over £75,000 ($150,000).
But I hate getting on aircraft. I tense up at the moment of strapping myself in. I relax a little once the seat belt light goes out. I tense up again during turbulence no more gusty than the average fart. I relax again once it stops. Then I tense up as the nose dips for the descent into our destination airport. If I were strapped up to an electrocardiogram, the line would resemble something from Disneyworld or Alton Towers.
It's nothing less than phenomenal how quickly the aviation industry has developed. Only fifty years after the Wright brothers' first struggled into the air in a rickety wood and canvas airframe, Britain was laying down plans to build a supersonic airliner. Concorde made its maiden flight on 2 March 1969 and whilst its commercial success is a matter of debate, no other supersonic airliner has come close to rivalling it, even 40 years on.
And the innovation continues. In the last few days, Richard Branson's Virgin Galactic has unveiled an aircraft that will launch two crew and six passengers on a sub-orbital flight into space. This aircraft will propel its occupants to a height of 60 miles (100km) above the earth's surface at a speed of 2,500 mph. The first flight is expected in around 18 months time and a seat is yours for a cool £100,000 ($200,000). More than 250 people have already signed up. How long before the '60 Mile High Club' has its inaugural members?
Aviation is seriously big business. It has been estimated that global aviation is a $880 billion industry, accounting for 10% of global GDP and employing some 14 million people. In July 2008, Etihad (the Abu-Dhabi based airline) bought £21.5 billion ($43 billion) worth of new aircraft from Boeing and Airbus in one go, eclipsing the previous largest aircraft order in the world. In the UK alone, passenger numbers are expected to grow from 200 million a year now to 500 million a year by 2030.
But this growth will not be without its costs. Friends of the Earth estimate that this expansion will see a doubling of carbon emissions. They claim that aviation is already the fastest growing source of carbon emissions. More flights means more noise pollution for those living around airports and under flight paths. And a desire for bigger and more numerous airports could lead to a loss of wildlife habitats and green field landscapes. I must admit that my love of air travel (whilst I'm on terra firms at least) and its environmental impact is something I struggle to reconcile.
Whilst it's impossible for those of us addicted to air travel to wean ourselves off it completely, my hope is that a bunch of very clever tree-hugging geniuses will discover the key to making flying and the environment better buddies.




