2100 Second Street S.W.
United States Coast Guard
Washington, DC 20593-0001
FEB 7 1994
COMMANDANT INSTRUCTION 16550.5
NOTICE TO AIRMEN (NOTAM) REPORTING PROCEDURES FOR LORAN-C AND
Purpose. This instruction provides information and direction to all U.S. Coast Guard
personnel involved in the transmission of Loran-C and OMEGA navigation signals. It
defines responsibilities and procedures for submitting NOTAM requests in order to provide
maximum protection to the aviation community. It consolidates NOTAM request
procedures previously scattered throughout several publications. New procedures for
NOTAM submission via facsimile (fax) machine are established. Procedures for the
Automatic Blink System (ABS) are also covered.
Action. Area and District commanders, Commanding Officer, OMEGA Navigation System
Center, and Coordinators of Chain Operations shall ensure compliance with the provisions
of this instruction.
Directives Affected. All previous guidance on issuing Notices to Airmen are cancelled.
Where conflicts arise between this instruction and Regional Manager Supplemental
Instructions (RMSIs), Chain Manager Instructions, COCO Instructions, the OMEGA
Navigation System Operating Procedures (COMDTINST M16566.1A), and the Aids to
Navigation Manual, Radionavigation (COMDTINST M16500.13), this instruction shall
Information concerning the availability of Loran-C and OMEGA transmitted signals
(including the availability of