Bit Field Name
|
Content
|
Bit Field
|
Bits
|
| Message Format |
Short Message |
25 |
0 |
| Protocol Flag |
User Protocol |
26 |
1 |
| Country Code |
366 USA |
27-36 |
0101 1011 10 |
| User Protocol Type |
Serial |
37-39 |
011 |
| Serial User Type |
ELT with Aircraft Operator Designator and a Serial Number |
40-42 |
001 |
| Cospas-Sarsat TAC Flag |
Bits 74 - 83 nationally assigned (not TAC) |
43 |
0 |
| Aircraft Operator Designator |
AAL |
44-61 |
1110 0011 1000 1010 01 |
| Serial Number |
3456 |
62-73 |
1101 1000 0000 |
| National Use |
|
74-83 |
0000 0000 00 |
| Radio-locating |
121.5 MHz |
84-85 |
01 |
| BCH-1 |
|
86-106 |
1100 0010 0100 0111 0000 0 |
| Emergency/National Use |
Bits 109 - 112 for National Use |
107 |
0 |
| Beacon Activation |
Automatic and Manual |
108 |
1 |
| Nature of Distress |
Not Used (Default Values) |
109-112 |
0000 |
