We often hear the question, “how did my Navigation Database subscription expire when I never received an invoice?” Our answer is usually a reminder that we don’t automatically invoice, but rather request a confirmation that your subscription should be renewed, and only then is the invoice issued.

The collective and individual benefits of Performance-Based Navigation (PBN) are wide-reaching, well-documented, and nearly indispensable. It is proven to save fuel, relieve congestion, and reduce delays at many airports, domestic and international. The world is relying on PBN for airport access and operational safety.

With the release of Flight Management System (FMS) Software Version SCN 803.0/903.0 for the UNS-1E/ 1Esp/ 1F/ 1L in 2006, a feature called Synchronous (SYNC) Mode was introduced. SYNC delivers a convenient way to manage FMS Nav functions during flight.

Until recently, Course Deviation Indicator (CDI) and Required Navigation Performance (RNP) values in the Flight Management System (FMS) Navigation Database were only in Authorization Required (AR) Area Navigation (RNAV) procedures.

The Federal Aviation Administration (FAA) has issued a compliance guide to aid operators in submitting the required content for an A056 data link authorization. A copy of the guide is available on the FAA's website.