An asset management system comprising: a historian configured to maintain a plurality of event data characterizing one or more events experienced by respective assets of a plurality of assets, wherein the plurality of assets are distributed among different sites of a fleet, and wherein the event data includes at least a location of the asset within an asset hierarchy of the fleet and at least one event parameter corresponding to the event; and an event analyzer including one or more processors configured to receive the plurality of event data, wherein the event analyzer is adapter to: generate a graphical user interface displaying a first window, wherein the first window includes a hierarchical list of assets organized according to their position within the asset hierarchy of the fleet; receive, within the GUI, a first user selection of a hierarchical level within the hierarchical list; and identify a plurality of events associated with the hierarchical level of the first user selection; characterized in that the event analyzer is further adapted to classify at least a portion of the identified plurality of events based upon their respective event data as either a unique event having a single occurrence within the plurality of events or a repeat event having multiple occurrences within the plurality of events; and update the GUI to display a second window in response to receipt of the first user selection, wherein the second window includes a list including a single entry for respective unique events and a single entry for respective repeat events of the first plurality of events. a historian configured to maintain a plurality of event data characterizing one or more events experienced by respective assets of a plurality of assets, wherein the plurality of assets are distributed among different sites of a fleet, and wherein the event data includes at least a location of the asset within an asset hierarchy of the fleet and at least one event parameter corresponding to the event; and an event analyzer including one or more processors configured to receive the plurality of event data, wherein the event analyzer is adapter to: generate a graphical user interface displaying a first window, wherein the first window includes a hierarchical list of assets organized according to their position within the asset hierarchy of the fleet; receive, within the GUI, a first user selection of a hierarchical level within the hierarchical list; and identify a plurality of events associated with the hierarchical level of the first user selection; characterized in that the event analyzer is further adapted to classify at least a portion of the identified plurality of events based upon their respective event data as either a unique event having a single occurrence within the plurality of events or a repeat event having multiple occurrences within the plurality of events; and update the GUI to display a second window in response to receipt of the first user selection, wherein the second window includes a list including a single entry for respective unique events and a single entry for respective repeat events of the first plurality of events. generate a graphical user interface displaying a first window, wherein the first window includes a hierarchical list of assets organized according to their position within the asset hierarchy of the fleet; receive, within the GUI, a first user selection of a hierarchical level within the hierarchical list; and identify a plurality of events associated with the hierarchical level of the first user selection; characterized in that the event analyzer is further adapted to classify at least a portion of the identified plurality of events based upon their respective event data as either a unique event having a single occurrence within the plurality of events or a repeat event having multiple occurrences within the plurality of events; and update the GUI to display a second window in response to receipt of the first user selection, wherein the second window includes a list including a single entry for respective unique events and a single entry for respective repeat events of the first plurality of events.