Jeppesen Working To Fix NavData Software Anomalies

 - January 22, 2008, 8:28 AM

Officials for Jeppesen report that the company has identified and corrected many of the irregularities in its NavData boundary data, but at press time about 350 of the more than 20,000 boundaries included in the latest update of the database, effective March 20, had not yet been fixed. The error arose from problems with a software upgrade when data was pulled from a database containing airspace boundaries worldwide for the March update. Only a dozen of the anomalies are in the U.S. These include data for Chicago; Des Moines, Iowa; Fayetteville, N.C.; Honolulu; Las Vegas; Louisville, Ky.; Oklahoma City; and Santa Ana, Calif. The error could cause GPS receivers to issue airspace boundary alerts too early or too late. Jeppesen noted that the irregularities are in the NavData boundary records only, which are generally used for graphic map depictions and boundary warnings. Navaids, waypoints, airways, SIDs, STARs and instrument approaches are not affected, nor are the paper versions of Jeppesen aeronautical charts.