System Description
System Description and Installation Manual for MXS ICD10004-01
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Emergency/Ident Byte
Byte Offset
Byte Name Field Description
03
EMG0
Emergency
The Emergency Byte consists of the following information:
Bits 0 – 2: Emergency/Priority Status
Binary
000
001
010
011
100
101
110
111
Decimal
0
1
2
3
4
5
6
7
Emergency/Priority Status
No Emergency
General Emergency
Lifeguard/Medical Emergency
Minimum Fuel
No Communications
Unlawful Interference
Downed Aircraft
Reserved
Bit 3: IDENT
IDENT (Indication that the IDENT button has been pressed. The bit will be set in outgoing ADS-B squitters for
18 seconds from the last receipt of an operating message with this bit set)