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6) The aircraft identification shall be that employed in the flight
plan. When no flight plan is available the registration
marking of the aircraft shall be used.
28lX1102
No. 77
Alznsx 10 - Aeronautical Telecommunications Volume I11
Table 2-33. BDS code 2,l - Aircraft and airline registration markings
2x11 1/02
No. 77
ME
-
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
31
32 -
33
34
35
36
37
38
39
40 --
41
42
43
44
45
FIELD
STATUS PURPOSE: To permit ground systems to identify the aircraft
MSB
without the necessity of compiling and maintaining continuously
updated data banks.
CHARACTER 1
The character coding shall be as defined in Table 3-6 of
Chapter 3, Annex 10, Volume IV.
LSB
MSB
CHARACTER 2
LSB
MSB
CHARACTER 3
LSB
MSB
CHARACTER 4 AIRCRAFT
REGISTRATION
NUMBER
LSB
MSB
CHARACTER 5
LSB
MSB
CHARACTER 6
LSB
MSB
CHARACTER 7
LSB
STATUS
MSB
4.6
47 CHARACTER 1
. - , . ...
ICAO AIRLINE
REGISTRATION
MARKING
CHARACTER 2
. .-
LSB
Part Z A~z~zr1x0 - Aerorzautical Telecommunicatiuns
Table 2-34. BDS code 2,2 - Antenna positions
ANTENNATYPE
PURPOSE: To provide information on the position of Mode S
and GNSS antennas on the aircraft in order to make very
accurate measurements of aircraft position possible.
MSB = 32 m
X POSIT ION
Range = [I ,631
LSB = I m
MSB = 1 6 m
ANTENNA 1
Z POSITION
Range - [I ,311
LSB = 1 m
ANTENNA TYPE
MSB = 32 m
X POSITION
Range = [ I , 631
LSB = 1 m
ANTENNA 2
11 30 1 ANTENNA TYPE
:I
28
I 29
Z POSITION
a n= 1 311
LSB = 1 rn
ANTENNA 3
11 i3;6 11 LSB = 1 rn
MSB= 16 rn
X POSITION
Range = [ I 631
Z POSITION :;z;I:
11 44 11 ANTENNA TYPE
ANTENNA 4
MSB= 16m
53
54 Z POSITION
- ." *.-
1) The antenna type field shall be interpreted as follows:
0 = Invalid
1 = Mode S bottom antenna
2 = Mode S top antenna
3 = GNSS antenna
4 to 7 = Reserved
2) The X position field shall be the distance in metres along the
aircraft centre line measured from the nose of the aircraft.
'The field shall be interpreted as invalid if the value is 0 and
the value of 63 shall mean that the antenna position is 63
metres or more from the nose.
3) The Z position field shall be the distance in metres of the
antenna from the ground, measured with the aircraft
unloaded and on the ground. The field shall be interpreted
as invalid if the value is 0 and the value 31 shall mean that
the antenna position is 31 metres or more from the ground.
Annex 10 - Aeronautical Telecommunicatio~zs Volume I11
Table 2-37. BDS code 2,s - Aircraft type
MB FIELD
11 CHARACTER 1
41 CHARACTER 2
CHARACTER3 MODEL
DESIGNATION
1 WAKE TURBULENCE CATEGORY
PURPOSE: To provide information on aircraft type.
1) Subfield coding
The coding shall be as in Doc 0643 - Aircraft Type
Designators. All the subfields that contain characters shall
be encoded using the 6-bit subset of 1A-5 as specified in
Table 3-6 of Annex 10, Volume IV.
2) Model designation
Coding shall consist of four characters as specified in
Doc 8643. The fifth character shall be reserved for future
expansion and shall contain all zeros until it is specified.
2222 in the first four characters shall mean that the
designator is not specified.
3) Number of engines
This subfield shall be encoded as a binary number where
number 7 means 7 or more engines.
2811 1/02
No. 77
Part 1 ilir~zcx1 0 - rlerorzautiral Telecornrarli~zic~rItipiz:i
2811 1/02
No. 77
Table 2-48. BDS code 3,0 - ACAS active resolution advisos'y
MB
-
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
　
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