Subject Indicators
A Navigational Warnings*
B Meteorological Warnings*
C Ice Reports
D Search and Rescue Information*
E Meteorological Forecasts
F Pilot Service Messages
G Available
H LORAN Messages
I Available
J SATNAV Messages
K Other Electronic Navaid Messages
L Navigation Warnings (other than A)*
V Special Services
W Special Services
X Special Services
Y Special Services
Z No Message on hand
(*) Services A, B, D and L for 518 KHz cannot be rejected by the
receiver.