Versatile Avionics Shop Test

The US Navy's Versatile Avionics Shop Test (VAST) System AN/USM-247(V) was a general purpose, automatic test system for diagnostic fault isolation and performance verification of selected avionics at the intermediate and depot maintenance levels.
The VAST-247 systems were installed aboard aircraft carriers and at shore sites to support selected avionics of the F-14A, E-2C, and S-3A aircraft. It was expected to eliminate the need for a variety of special support equipment and to reduce the number of avionic technicians currently required.
The major subsystems of VAST are the test station, computer, and data transfer unit. The interface between the VAST hardware and the avionics to be tested is supplied by the test program set. Each unique item of avionics was to be tested by the system and requires a test program set.
PRD - Electronics, Inc., is the contractor for the VAST hardware.
The test program sets are developed by the aircraft manufacturers: The Grumman Aerospace Corporation for the F-14A and E-2C and the Lockheed Aircraft Corporation for the S-3A.

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