Scheduled Maintenance Certain website applications will experience temporary unavailability starting from 9:30 PM EST on March 15th through March 16th 9:00 PM EST, including Technical Publications. We appreciate your patience as we implement exciting enhancements and features to enhance your digital experience with Honeywell.
Scheduled Maintenance On Thursday 04/18 from 4:00 AM to 6:00 AM EST and Friday 04/20 from 1:00 AM to 2:00 AM EST, Technical Publications App will be unavailable as we prepare for the introduction of exciting new features. We appreciate your patience as we strive to enhance the Aero portal experience.
×

Your browser is not supported.

For the best experience, please access this site using the latest version of the following browsers:

Close This Window

By closing this window you acknowledge that your experience on this website may be degraded.

Service Information Letter Briefing

Service Information Letter Briefing

NGFMS Reset Due to Duplicate Waypoints in NAV Database

An NGFMS anomaly was discovered recently by an operator that can cause a reset if the Active (or Secondary) Flight Plan pages have not been selected before entering any waypoints.

This anomaly resulted in an FMS (soft) reset, meaning the FMS performed a reset and recovery prior to additional flight plan entries. The issue occurred when the FMS was powered up and the crew had not yet accessed a Flight Plan Page (Active or Secondary).

Most operators have seen a scenario where they enter a waypoint in the flight plan and the FMS populates a list of waypoints with the same name that exist in different regions of the world for confirmation, such as the LOMPA waypoint.

LOMPA Is a Waypoint Name Used in Different Regions

The reset may occur if a waypoint name used for more than one location is selected in one of the non-FMS flight plan pages (POS INIT, FIX INFO, PILOT WPT LIST, Equal Time Point, etc.) and is then inserted into a Flight Plan page prior to accessing a flight plan page on power up.

Flight crews are advised to select the Active (or Secondary) flight plan pages prior to entering waypoints in any of the non-flight plan pages:

Avoiding this scenario is recommended, but if the FMS does reset, it will recover promptly.

This issue will be corrected in G650 FMS Block 3 software.