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Article

Title: Data Takes Flight: Southwest Airlines will equip its entire fleet...

Author: Brewin, Bob Article Type: Product Analysis
Source: Computerworld, v38 n25 p25(2) Publication Date: Jun 21, 2004
  ISSN: 0010-4841
  Illustrations: Charts
URL of Publication: http://www.computerworld.com

A new data service called VHF Digital Link Mode 2 (VDLM2) has been developed by SITA (Societe Internationale de Telecommunications Aeronautiques. VDLM2 more than quadruples the air-ground data rate while using comparatively uncrowded parts of the VHF aviation radio band. Although leading airlines have been slow in signing on for the new service, Southwest Airlines is one that has and is benefiting from use of the 136.975KHz VDLM2 frequencies; Southwest has about 15 times the data rate of ACARS (an older offering from Arinc). Southwest was able to install an advanced VHF data system in 388 planes and has support for text message exchange between dispatch centers and air crews. A VHF system runs on a network of 148 Arinc ground stations, and Southwest plans installation of 802.11g Wi-Fi system e-mails on its fleet by the end of 2005. Throughput for 802.11g of 54Mbit/second supports automatic updating of aircraft software. Dispatchers make ready and receive messages via the Hermes Ground Data Link System developed by the United Kingdome division of Rockwell Collins. According to an aviation consultant, says VDLM2 makes ;data communications . .. much more efficient and less prone to confusion for pilots than voice communications are.

Special Features: Charts

Companies:
ARINC Inc

Products:
VHF Digital Link Mode 2 (VDLM2)

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