1966

The first batch of 20x units is delivered in 1966 and 1967. Initially these units are registered DZt 1911 - 1930.  

Sources: https://swissrail.groups.io/g/main/message/27540

1971

The second batch of 20x units is delivered in 1971. These units are registered DZt 91-33 940 - 959.

The 20x units from the first batch receive also new registration numbers DZt 91-33 920 - 939.
 

Sources: https://swissrail.groups.io/g/main/message/27540

1980

March

Unit DZt 50 85 91-33 926-4 is removed from service after an accident in Bern Wylerfeld.  

Sources: https://swissrail.groups.io/g/main/message/27540

1989

The 39x remaining units from this series receive new designation Dt 92-33 between 1989 and 1990.  

Sources: https://groups.io/g/BahnCH/topic/sbb_dt_92_33_ex_dzt_91_33/16488550?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,40,16488550

1995

The following unit is withdrawn in 1995: Dt 92-33 936.  

Sources: https://swissrail.groups.io/g/main/message/27540

1997

The following units are withdrawn in 1997: Dt 92-33 940, 942 & 945.  

Sources: https://swissrail.groups.io/g/main/message/27540

1998

The following units are withdrawn in 1998: Dt 92-33 943 - 944, 946 - 949, 953 - 957 & 959.  

Sources: https://swissrail.groups.io/g/main/message/27540

1999

The following units are withdrawn in 1999: Dt 92-33 941, 950 & 958.  

Sources: https://swissrail.groups.io/g/main/message/27540

2000

In 2000, units Dt 92-33 951 - 952 are converted to St 89-33 900 - 901 "jail cars".  

Sources: https://swissrail.groups.io/g/main/message/27540

2005

December

From December 2005, multiple vehicles from this series are rented to Bern-Lötschberg-Simplon Railway (BLS) at different times (the Swiss Federal Railways keep the ownership).

These units are: 920, 921, 923, 927, 931, 933 & 934. The designation and registration numbers don't change (Dt 92-33 920 - 921, 923, 927, 931, 933 - 934) but the Bern-Lötschberg-Simplon Railway (BLS) logo is applied.

Most units return to the Swiss Federal Railways (SBB) by the end of 2008.
 

Sources: https://swissrail.groups.io/g/main/message/27540

2007

The following unit is withdrawn in 2007: Dt 92-33 924.  

Sources: https://swissrail.groups.io/g/main/message/27540

2008

The following unit is withdrawn in 2008: Dt 92-33 921.  

Sources: https://swissrail.groups.io/g/main/message/27540

2009

The following unit is withdrawn in 2009: Dt 92-33 921.  

Sources: https://swissrail.groups.io/g/main/message/27540

2010

The following units are withdrawn in 2010: Dt 92-33 920, 927, 931 & 935.  

Sources: https://swissrail.groups.io/g/main/message/27540

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Latest update on the 4th of January 2021 at 20:57

Contributor(s): Tudor C.

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