| ID | Losses | Type | Description | Episode |
| 20 |
 |
Unknown | No less than five academy trainers are lost in an attempt to perform the Kolvoord Starburst maneuver. This is a record for any single episode of a Trek series. [1] | The First Duty |
| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TNG | 5 | The First Duty |
| Series : | TNG Season 5 |
| Episode : | The First Duty |
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