2 ms·
At least one of the trains had its DSU (Dokumentacja Systemu Utrzymania - Maintenance System Manual) linked online (it's specific to that one train). It should
by p_l 3y ago
At least one of the trains had its DSU (Dokumentacja Systemu Utrzymania - Maintenance System Manual) linked online (it's specific to that one train). It should be enough to perform full maintenance.
Nowhere in it any of the "lockouts" are documented.