E-3 'pit box' test cart
A pit box during operation.The equipment on the right is the operational equipment used to energize the E-3 aircraft for testing. The middle bay shows a monitor and keyboard the operators use to monitor and operate the system. An identical set of equipment is kept in the left bay, as requested by the customer. Should a piece fail and need to be replaced, this provides them a replacement part for immediate replacement.

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Photo by: Air Force photo by Kevan Goff-Parker |  VIRIN: 180416-F-ZZ999-003.JPG