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selected transmission rate shall be subject to being overridden
by commands received from ground control.
28/11/02
No. 77
Part Z Annex 10 - Aeronautical Telecommunications
Table 2-8. BDS code 0,8 - Extended squitter aircraft identification and category
MB FIELD
PURPOSE: To provide aircraft identification and category. -
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16 -
17
18
19
20
21
22
23
24 -
25
26
27
28
29
30
3 1
32
33
34
35
36
37
38
39
-40
41
42
43
44
45
46
47
48 -
49
50
51
52
53
54
55
Note.- Since there is no internationally agreed criteria for
wake vortex categorization, code 4 (set "A'? should be
interpreted as indicating a medium category aircraft exhibiting
higher than typical wake vortex characteristics.
FORMAT TYPE CODE
(specified in 2.2.3.1)
AIRCRAFT CATEGORY
MSB
CHARACTER 1
MSB
CHARACTER2
MSB
CHARACTER3
MSB
CHARACTER4
MSB
CHARACTER5
MSB
CHARACTER6
MSB
CHARACTER7
MSB
CHARACTER 8
3
Format type shall be coded as follows:
1 = Identification, aircraft category set D
2 = Identification. aircraft catea-o rv set C *
3 = Identification, aircraft category set B
4 = Identification, aircraft category set A
Airoraftlvehicle category shall be coded as follows:
Set A
0 = No aircraft category information
1 = Light (c15 500 Ibs or 7 031 kg)
2 = Medium 1 (15 500 to 75 000 Ibs or 7 031 to 34 019 kg)
3 = Medium 2 (75 000 to 300 000 Ibs or 34 019 to 136 078 kg)
4 = High vortex aircraft
5 = Heavy (>300 000 Ibs or 136 078 kg)
6 = High performance (>5 g acceleration) and high speed
(> 400 kt)
7 = Rotorcraft
Set B
0 = No aircraft category information
1 = Gliderlsailplane
2 = Lighter-than-air
3 = Parachutist/skydiver
4 = Ultralightlhang-glidertparaglider
5 = Resewed
6 = Unmanned aerial vehicle
7 = Space/transatmospheric vehicle
Set C
0 = No aircraft category information
1 = Surface vehicle - emergency vehicle
2 = Surface vehicle - service vehicle
3 = Fixed ground or tethered obstruction
4 - 7 = Reserved
Set D: Resewed
Aircraft identification coding shall be:
As specified in Table 2-32.
28/11/02
No. 77
Annex 10 - Aeronautical Telecommunications Volume I11
Table 2-9a. BDS code 0,9 - Extended squitter airborne velocity
(Subtypes 1 and 2: velocity over ground)
MB FIELD
28/11/02
No. 77
PURPOSE: To provide additional state information
for both normal and supersonic flight.
-
Subtype shall be coded as follows:
-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16 -
17
18
19
20
21
22
23
24
25
26
27
28
29
30
3 1
32 -
33
34
35
36
37
38
39
40 -
4 1
42
43
44
45
46
47
48
MSB 1
0
FORMAT TYPE CODE = 19 0
1
LSB 1
SUBTYPE 1 0
0
1
IFR capability shall be coded as follows:
Code
0
1
2
3
4
5
6
7
SUBTYPE2 0
1
0
0 = Transmitting aircraft has no capability for
ADS-B-based conflict detection or higher
level applications.
1 = Transmitting aircraft has capability for
ADS-B-based conflict detection and higher
level applications.
Velocity
INTENT CHANGE FLAG (specified in 2.3.5.3)
IFR CAPABILITY FLAG
NAVIGATION UNCERTAINTY
CATEGORY - VELOCITY
(NUCR)
DIRECTION BIT for E-W velocity: 0 = East, 1 = West
EAST-WEST VELOCITY
NUC shall be coded as follows:
TY pe
NORMAL: LSB = 1 knot
All zeros = no velocity information
Value Velocity
1 0 kt
2 1 kt
3 2 kt
- -
1 022 1 021 kt
1 023 >1 021.5 kt
SUPERSONIC: LSB = 4 knots
All zeros = no velocity information
Value
1 0 kt
2 4 kt
3 8 kt
- -
1 022 4 084 kt
1 023 >4 086 kt
Reserved
NUCR
0
1
2
3
4
Ground
Speed
Airspeed,
Heading
DIRECTION BIT for N-S Velocity, 0 = North, 1 = South
　
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