This is a three (3) level Work Breakdown Structure of an Aircraft System. By Mdd at en.wikipedia (Transferred from en.wikipedia) [Public domain], from Wikimedia Commons.

The WBS covers the aircraft, training, data, support equipment, site activiation, spares and industrial facilities.

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Text version of the 3 level Aircraft System WBS

Aircraft System

• Air Vehicle
  • Airframe
  • Propulsion
  • Application Software
  • Communications / Identification
  • Navigation / Guidance
  • Central Computer
  • Fire Control
  • Data Display and Controls
  • Survivability
  • Reconnaissance
  • Automatic Flight Control
  • Central Integration Checkout
  • Antisubmarine Warfare
  • Armament
  • Weapons Delivery
  • Auxiliary Equipment

• SE/Program Management

• System T&E
  • DT&E
  • OT&E
  • Mockups
  • T&E Support
  • Test Facilities

• Training
  • Equipment
  • Services
  • Facilities

• Data
  • Technical Publications
  • Engineering Data
  • Support Data
  • Management Data
  • Data Depository

• Peculiar Support Equipment
  • Test and Measurement Equipment
  • Support and Handling Equipment

• Common Support Equipment
  • Test and Measurement Equipment
  • Support and Handling Equipment

• Operations Site Activation
  • System Assembly, Installation and Checkout on site
  • Contractor Technical Support
  • Site Construction
  • Site / Ship Vehicle Conversion

• Industrial Facilities
  • Construction / Conversion / Expansion
  • Equipment Acquisition or modification
  • Maintenance

• Initial Spares and Initial Repair Parts
  • Work in progress (Specify by Allowance List, Grouping or H/W Element)

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