Chief Petschauer was a senior enlisted crewman assigned to the USS Enterprise-E sometime in 2379 as a replacement for their lost crew.

Captain Wai-Lin Go, during her inspection tour, pointed out that Chief Petschauer had more reprimands than the ship had decks. (TNG novel: A Time for War, A Time for Peace)

USS Enterprise-E miscellaneous personnel
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see also: engineering personnelmedical & counseling personneloperations personnelpilots & flight control personnelsecurity & tactical personnelsciences personnelsenior staffunnamed