The stock was built in two batches (A60 and A62) by Cravens of Sheffield in the early 1960s, and replaced all other trains on the line.
In 1946 two experimental trailers similar in exterior appearance to the production trains were built using underframes from T Stock, but they were scrapped when the trials concluded.
The A stock were the last subsurface trains built with headlights positioned on the left side of the cab giving them an asymmetrical appearance.
[13] Each unit consisted of four cars: two powered driving motors at each end and two non-powered trailers in between.
Although this practice was discontinued across the Underground network at the introduction of the A60 and A62 Stocks, their capabilities of carrying shorter units continued the operation.
In addition to the Metropolitan line, A Stock was permitted to traverse the following sections, subject to the following restrictions:[16] Cars had a four-digit number.
5034 and 5008 swapped numbers in July 1985; new 5008 and 6008 became set 5234-6234 in September 1994, 5034 preserved at the London Transport Museum, Acton.
{{cite journal}}: Missing or empty |title= (help) A60 Stock reached 50 years of service on 12 June 2011.
[19] This is similar to the S7 Stock for the District, Circle and Hammersmith & City lines; the main differences are the layout and number of seats and the provision of two sand hoppers for each rail due to the different conditions at the country end of the line.
[citation needed] In February 2012, the London Transport Museum began offering luggage racks from withdrawn A Stock for sale.
[22] The same train was used on 29 September 2012 for the final ticket-only railtour, organised by the London Transport Museum.
The tour ended at Wembley Park: on the final stretch from Finchley Road, the train was unofficially recorded at 74 mph.
The historical age and significance of No.5034 saw it taken to the Acton Museum Depot for preservation but vehicle 5062 was scrapped.
It had been last used in December 2017, when it had developed a fault and repairs were deemed unnecessary, as it was planned to be scrapped after the end of the year anyway, being replaced by a D78 stock unit.
[23] The night of 24 May 2018 was the final time an A stock unit ran under its own power on the London Underground network.
The set was subsequently removed from the adjacent London Transport Museum depot at Acton Town by road for disposal on 17 and 18 July 2018.