# A7 manager > Railway fleet management platform — internal documentation ## Docs - [A7 manager](https://docs.a7manager.se/index.md): Lightweight Asset management platform for railway vehicle owners - [Architecture](https://docs.a7manager.se/platform/architecture.md) - [Projects and roles](https://docs.a7manager.se/platform/projects-and-roles.md) - [Technical stack](https://docs.a7manager.se/platform/technical-stack.md) - [Environments](https://docs.a7manager.se/platform/environments.md): The production environment topology, its security posture, and how development differs. - [Ask AI](https://docs.a7manager.se/pages/ask-ai.md): Natural-language questions answered against the platform's own data. - [Vehicles](https://docs.a7manager.se/pages/vehicles.md): The fleet register of individual vehicles. - [Components](https://docs.a7manager.se/pages/components.md): Individually tracked, serialised components. - [Strategic KPI](https://docs.a7manager.se/pages/strategic-kpi.md): Quarter-over-quarter reliability, compliance and defect-rate metrics. - [Defects](https://docs.a7manager.se/pages/defects.md): Faults recorded against a vehicle or component. - [Maintenance Records](https://docs.a7manager.se/pages/maintenance-records.md): Performed preventative maintenance. - [Maintenance Status](https://docs.a7manager.se/pages/maintenance-status.md): Preventative maintenance due across the fleet. - [Out of Service](https://docs.a7manager.se/pages/out-of-service.md): Periods where a vehicle was unavailable. - [Cleaning](https://docs.a7manager.se/pages/cleaning.md): Cleaning and toilet emptying events. - [Maintenance Planner](https://docs.a7manager.se/pages/planner.md): Projecting upcoming maintenance into a workable schedule. - [Wheel Analysis](https://docs.a7manager.se/pages/wheel-analysis.md): Wear trends, remaining life, and the reframing demand forecast. - [Warranty](https://docs.a7manager.se/pages/warranty.md): Claims raised from defects, grouped for negotiation, and taken through an approval workflow. - [Inspections](https://docs.a7manager.se/pages/inspections.md): Campaigns, field reports and findings, and generated PDF reports. - [Inspector app](https://docs.a7manager.se/pages/inspector-app.md): The separate offline-first app inspectors use in the field. - [HVC Management](https://docs.a7manager.se/pages/high-value-components.md): The repair loop for serialised components. - [Vehicle Types](https://docs.a7manager.se/pages/vehicle-types.md): Vehicle models, their product-group tree and mounting positions. - [Component Types](https://docs.a7manager.se/pages/component-types.md): Classes of component. - [Maintenance Plan](https://docs.a7manager.se/pages/maintenance-plans.md): Maintenance programmes and the tasks in them. - [Measurements](https://docs.a7manager.se/pages/measurement-config.md): Measurement types and their thresholds. - [Users and Projects](https://docs.a7manager.se/pages/admin.md): Superuser-only administration. - [Database structure](https://docs.a7manager.se/data/schema-overview.md): The entities the platform stores, and how they relate to each other across modules. - [How ingestion works](https://docs.a7manager.se/data/ingestion.md): Daily CSV import pipeline: delivery, validation, and the rules that apply to every file. - [vehicle_configurations](https://docs.a7manager.se/data/files/vehicle-configurations.md): Mount and dismount events. Must be loaded before the other files. - [defects](https://docs.a7manager.se/data/files/defects.md): Faults recorded against a vehicle or a component. - [vehicle_readings](https://docs.a7manager.se/data/files/vehicle-readings.md): Daily absolute odometer snapshots. - [maintenance_records](https://docs.a7manager.se/data/files/maintenance-records.md): Maintenance work that was performed. - [measurements](https://docs.a7manager.se/data/files/measurements.md): Condition measurements. The most strictly validated file. - [vehicle_out_of_service](https://docs.a7manager.se/data/files/vehicle-out-of-service.md): Periods where a vehicle was unavailable. - [cleaning_records](https://docs.a7manager.se/data/files/cleaning-records.md): Cleaning and toilet emptying events. - [maintenance_plans](https://docs.a7manager.se/data/files/maintenance-plans.md): Maintenance programmes and their tasks. Not a daily file, and it deletes. - [Projects and Users tables](https://docs.a7manager.se/data/tables/projects-and-users.md): Tenancy and access control. - [Assets tables](https://docs.a7manager.se/data/tables/assets.md): Vehicle types, product groups, component types, slots, vehicles, components and odometer readings. - [Service Book tables](https://docs.a7manager.se/data/tables/service-book.md): Mounting history, maintenance plans and tasks, performed work, out-of-service periods and cleaning. - [Defects tables](https://docs.a7manager.se/data/tables/defects.md): Faults recorded against a vehicle or component. - [Warranty tables](https://docs.a7manager.se/data/tables/warranty.md): Claims, groups, their association handshake, and the shared activity timeline. - [High-Value Components tables](https://docs.a7manager.se/data/tables/high-value-components.md): The repair-loop audit trail over assets_component. - [Inspections tables](https://docs.a7manager.se/data/tables/inspections.md): Templates, reports, findings, OK marks, photos and generated PDF artifacts. - [Measurements tables](https://docs.a7manager.se/data/tables/measurements.md): Measurement types, thresholds and recorded values. - [Planner tables](https://docs.a7manager.se/data/tables/planner.md): Plannings and the occurrences projected from them.