The 1960 TRT was having issues with the recording equipment and whilst it was off for repairs, this 1972mk2 unit, borrowed from the Bakerloo line, was filling in for the meantime, even returning back to the Northern Line after over 20 odd years away. It is fully compatible with the signalling system and can operate on the Piccadilly line during service hours. When it returned to the Northern line, it could only use it during engineering hours at night without the 1995 stock running at the same time as the line upgraded to automatic train operation and not compatible with the signalling system to run during service hours, since it left for the Bakerloo line in the late 1980s.
2:49 you can hear the emergency alarm inside the train
The 1960 TRT was having issues with the recording equipment and whilst it was off for repairs, this 1972mk2 unit, borrowed from the Bakerloo line, was filling in for the meantime, even returning back to the Northern Line after over 20 odd years away.
It is fully compatible with the signalling system and can operate on the Piccadilly line during service hours.
When it returned to the Northern line, it could only use it during engineering hours at night without the 1995 stock running at the same time as the line upgraded to automatic train operation and not compatible with the signalling system to run during service hours, since it left for the Bakerloo line in the late 1980s.
I know
The 1972 stock is being diverted on the Piccadilly line.
Not the entire fleet though, is it?
1972 stock diverted.
Nice video
How long is the tunnel between Stratford and White city
Any particular reason as to why?
its to help out the TRV