Projecting the Effect of
CPDLC on NAS Capacity
February 2005
Clark Shingledecker, NTI
Stephen Giles, The MITRE Corporation
Evan R. Darby, Jr., Federal Aviation Administration
Joseph Pino, Federal Aviation Administration
Timothy R. Hancock, Federal Aviation Administration
ABSTRACT
The Federal Aviation Administration (FAA) in conjunction with MITRE's
Center for Advanced Aviation System Development (CAASD) is developing
operational concepts and working with stakeholders throughout the aviation
community to build the business case for investment in air/ground data
communications capabilities. These capabilities are needed to respond
to the high demand on the National Airspace System (NAS) currently and
in the foreseeable future, resulting from the increased demand for access
to airspace and the need to increase the operational efficiency of NAS
infrastructure. The FAA Air Traffic Organization (ATO) is analyzing
the benefits of potentially implementing a subset of air/ground data
communications in the domestic En Route domain focused on the Controller-Pilot
Data Link Communications (CPDLC) application. The air/ground data communications
functionality provided by CPDLC is inherently coupled with the flight
data processing functions of the NAS. The ATO is in the process of replacing
these functions as part of the En Route Automation Modernization (ERAM)
program. Any potential introduction of CPDLC functionality would occur
subsequent to the implementation of ERAM in the NAS. This paper presents
a quantitative estimate of the operational effects of implementing a
CPDLC capability in the En Route domain. The economic implications of
this estimate of operational effects were presented in [MITRE CAASD,
2004].
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