1821/25(GEN)
ArchivedReceived: 30 Oct 2025, 00:00Archived: 25 Nov 2025, 16:41Updated: 4 Nov 2026, 19:33
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ADDITIONAL MILITARY LAYERS (AML) ADVISORY.
1. USERS OF NGA AML PRODUCTS ARE ADVISED
OF UNINTENDED ECDIS BEHAVIOR WHEN
QUERYING AREA OBJECTS WITHIN EDITION 2 OF
THE BOUNDARIES AML (U4R0UMBA THROUGH
U4R0UMBZ) ONLY. EDITION 1 OF THE BOUNDARIES
AML, OPAREA AMLS (U4R0UOA1, U4R0UOA3,
U4R0UOA0) AND HITS AML (U4R0UHIT) ARE
NOT AFFECTED. NGA HAS CONFIRMED THIS
ISSUE AFFECTS NAVY VMS 9.5.2; OTHER SYSTEMS
ARE CURRENTLY UNASSESSED. QUERYING AREA
OBJECTS OF THE BOUNDARIES AML WILL CAUSE
THE ECDIS TO LOCK UP AND SHUT DOWN AFTER
USER ACKNOWLEDGEMENT.
NGA RECOMMENDS REMOVING BOUNDARIES
AML EDITION 2 LAYERS FROM THE CHART INDEX
AND USING EDITION 1. KEEPING THE EDITION 2
FILES WITHIN THE EMERGENCY NAVIGATION
LAPTOP CREATES THE POTENTIAL FOR A USER
TO QUERY A BOUNDARIES AML AREA OBJECT
AND CRASH THE VMS UNIT WHILE UNDERWAY
REQUIRING A SOFTWARE RESTART.
2. FOR QUESTIONS OR CONCERNS, CONTACT
[email protected].