Allerdice Enterprises, LLC Founder James K. Allerdice Jr. pictured here with Secretary of Transportation Ray LaHood at the 45th Annual Secretary's Awards on November 15, 2012.

Mr. Allerdice received the Secretary of Transportation's Award for Excellence for "Outstanding Service to the American People, Recognizing your Dedication, Achievement and Leadership in the areas of Performance Based Navigation, Environmental Stewardship and Fiscal Responsibility."  Mr. Allerdice was presented with this award on November 15, 2012, for his work designing and implementing Performance Based Navigation procedures as the Atlanta TRACON NEXTGEN Support Specialist.


Allerdice Enterprises, LLC Owner and Chief Consultant, James (Jim) K. Allerdice Jr. is an expert in the design and implementation of Performance Based Navigation (PBN) Systems.  Mr. Allerdice was the Chief Designer of the Area Navigation (RNAV) infrastructure for the Atlanta Hartsfield-Jackson International Airport (ATL).  He pioneered new and innovative designs such as the Equivalent Lateral Spacing Operations (ELSO) based on the MITRE Study, which enables reduced divergence RNAV Off-The-Ground (OTG) departure operations.  The ELSO design was predicted to increase departure capacity between 8-13 operations per hour and has equaled or exceeded those expectations since full implementation in 2011.


Mr. Allerdice was also heavily involved in the research and development of Optimized Profile Descents (OPD).  Through collaborative efforts with Georgia Tech and the FAA, some of the first OPD Standard Terminal Arrivals (STAR) were designed and implemented within the Atlanta Terminal Radar Approach Control (TRACON) (A80) and Atlanta Air Route Traffic Control Center (ARTCC) (ZTL) airspace.


Mr. Allerdice also worked on other pioneering efforts such as RNAV Visual Flight Procedures (RVFP) Established on Required Navigational Performance (RNP) (EoR) approaches, and RNAV Closely Spaced Parallel Operations (CSPO) procedures.


Mr. Allerdice's RNAV Project List        Mr. Allerdice's Resume



Mr. Allerdice is available for consultation domestically and internationally concerning the design and implementation of Performance Based Navigation procedures.



Allerdice Enterprises, LLC

Senoia, GA

Phone: 678-485-0852