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United States Department of Transportation United States Department of Transportation

Order JO 6690.6B - Voice Switching and Control System (VSCS) Maintenance Technical Handbook (MTHB)

Document Information

JO 6690.6B
Voice Switching and Control System (VSCS) Maintenance Technical Handbook (MTHB)
Date issued
Office of Primary Responsibility
AJW-154, Air Traffic Voice Switch System Team
Access restriction
FAA Network Only
Contact information
NASE Technical Documentation
(405) 954-8341
Order purpose statement

This MTHB provides guidance and prescribes technical standards, tolerances, and procedures applicable to the maintenance and inspection of the VTABS facilities. It also provides information on special methods and techniques, which will enable maintenance personnel to achieve optimum performance from the equipment. This information augments information available in TIBs and other MTHBs, and complements the latest edition of Order 6000.15, General Maintenance Handbook for National Airspace System (NAS) Facilities.


This document's content can be accessed only from within the FAA network.

The document's Office of Primary Responsibility (OPR) is AJW-154.