This was derided by the union which claimed much of the problems were due to wheel, axle and brake faults with drivers and other staff left to take repeated blame from angry passengers.
Pat Hansberry, operations director for London Underground, said: "This threat of strike action is completely unnecessary. We urge the union leadership to work with us constructively on the issues they have raised so that we can resolve this dispute."
Network Rail maintenance and safety engineers belonging to the TSSA union are also set to stage a four day strike covering the entire Easter period, 25-28 March, in a dispute over back pay. The union warns some services on Virgin East Coast and West Coast main lines could be disrupted.