It is exactly 30 years since the Piccadilly Line was extended to Heathrow.
The Heathrow stations are some of the busiest on the Tube network
At the time, it became the first Underground network in the world to link directly to a capital city's main international airport.
In 1977 the station was called Heathrow Central but was renamed Heathrow 1,2,3 in 1984, with opening of Heathrow Terminal 4 station.
The Heathrow Terminal 5 station is schedule to open on 27 March 2008.
The Heathrow stations are some of the busiest on the London underground network.
Piccadilly Line performance manager Stuart Burnett said: "Piccadilly Line staff are very proud of Heathrow
"For many years the aeroplane has been the symbol of the line and it is what sets us apart.
"It also gives us an interesting an unique set of customers - we have people from every corner of the globe."