Construction
In the early 1970s London Transport placed an order of 88 trains to replace the 1959 stock, the 1938 stock and 1962 stock vehicles which previously operated on the Piccadilly line. Built between 1972 and 1975 by Metro Cammell in Birmingham, the first unit entered service on 19 July 1975 and the last was introduced by 1977. The trains featured longer cars and larger door space than the previous ones, being designed for airport customers.
The stock was refurbished by Bombardier Transportation between 1996 and 2001. Changes included the removal of transverse seating, strap hangers replaced with grab bars, new floor material and a full repaint into London Underground's corporate livery.
The last unrefurbished train ran in early 2001 before re-entering service as a refurbished train in July of that year. In 2005 the seat covers were replaced with a royal blue moquette.
Read more about this topic: London Underground 1973 Stock
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