865
Federal Aviation Administration, DOT
§ 171.313
T
ABLE
8b—A
UXILIARY
D
ATA
W
ORD
A
DDRESS
C
ODES
—Continued
No. I
13
I
14
I
15
I
16
I
17
I
18
I
19
I
20
9. 0 0 1 0 0 1 0 1
10. 0 0 1 0 1 0 0 0
11. 0 0 1 0 1 1 1 1
12. 0 0 1 1 0 0 0 1
13. 0 0 1 1 0 1 1 0
14. 0 0 1 1 1 0 1 1
15. 0 0 1 1 1 1 0 0
16. 0 1 0 0 0 0 1 1
17. 0 1 0 0 0 1 0 0
18. 0 1 0 0 1 0 0 1
19. 0 1 0 0 1 1 1 0
20. 0 1 0 1 0 0 0 0
21. 0 1 0 1 0 1 1 1
22. 0 1 0 1 1 0 1 0
23. 0 1 0 1 1 1 0 1
24. 0 1 1 0 0 0 0 1
25. 0 1 1 0 0 1 1 0
26. 0 1 1 0 1 0 1 1
27. 0 1 1 0 1 1 0 0
28. 0 1 1 1 0 0 1 0
29. 0 1 1 1 0 1 0 1
30. 0 1 1 1 1 0 0 0
31. 0 1 1 1 1 1 1 1
32. 1 0 0 0 0 0 1 0
33. 1 0 0 0 0 1 0 1
34. 1 0 0 0 1 0 0 0
35. 1 0 0 0 1 1 1 1
36. 1 0 0 1 0 0 0 1
37. 1 0 0 1 0 1 1 0
38. 1 0 0 1 1 0 1 1
39. 1 0 0 1 1 1 0 0
40. 1 0 1 0 0 0 0 0
T
ABLE
8b—A
UXILIARY
D
ATA
W
ORD
A
DDRESS
C
ODES
—Continued
No. I
13
I
14
I
15
I
16
I
17
I
18
I
19
I
20
41. 1 0 1 0 0 1 1 1
42. 1 0 1 0 1 0 1 0
43. 1 0 1 0 1 1 0 1
44. 1 0 1 1 0 0 1 1
45. 1 0 1 1 0 1 0 0
46. 1 0 1 1 1 0 0 1
47. 1 0 1 1 1 1 1 0
48. 1 1 0 0 0 0 0 1
49. 1 1 0 0 0 1 1 0
50. 1 1 0 0 1 0 1 1
51. 1 1 0 0 1 1 0 0
52. 1 1 0 1 0 0 1 0
53. 1 1 0 1 0 1 0 1
54. 1 1 0 1 1 0 0 0
55. 1 1 0 1 1 1 1 1
56. 1 1 1 0 0 0 1 1
57. 1 1 1 0 0 1 0 0
58. 1 1 1 0 1 0 0 1
59. 1 1 1 0 1 1 1 0
60. 1 1 1 1 0 0 0 0
61. 1 1 1 1 0 1 1 1
62. 1 1 1 1 1 0 1 0
63. 1 1 1 1 1 1 0 1
64. 0 0 0 0 0 0 0 0
N
OTE
1: Parity bits I
19
and I
20
are chosen to
satisfy the equations:
I
13
+ I
14
+ I
15
+ I
16
+ I
17
+ I
18
+ I
19
= EVEN
I
14
+ I
16
+ I
18
+ I
20
= EVEN
T
ABLE
8
C
—A
UXILIARY
D
ATA
Word
(See
note 6)
Data content
Type
of data
Maximun
time be-
tween trans-
missions
(Seconds)
Bits
used
Range of values
Least
sig-
nifi-
cant
bit
A1 ......
Preamble .....................................................
Digital 1.0
12
......................................................
.........
Address ........................................................
...........
....................
8 ......................................................
.........
Approach azimuth antenna offset ...............
...........
....................
10
¥
511 m to + 511 m (See note 3)
1 m
Approach azimuth to MLS datum point dis-
tance.
...........
....................
13 0 m to 8 191 m ............................
1 m
Approach azimuth antenna alignment with
runway centerline.
...........
....................
12
¥
20.47
°
to 20.47
°
(See note 3) ..
0.01
°
Approach azimuth antenna coordinate sys-
tem.
...........
....................
1 (See note 2) .................................
.........
Spare ...........................................................
...........
....................
13 ......................................................
.........
Parity ............................................................
...........
....................
7 (See note 1) .................................
.........
A2 ......
Preamble .....................................................
Digital 1.0
12
......................................................
.........
Address ........................................................
...........
....................
8 ......................................................
.........
Approach elevation antenna offset ..............
...........
....................
10
¥
511 m to + 511 m (See note 3)
1 m
MLS datum point to threshold distance ......
...........
....................
10 0 m to 1 023 m ............................
1 m
Approach elevation antenna height .............
...........
....................
7
¥
6.3 m to + 6.3 m (See note 3)
0.1
m
Spare ...........................................................
...........
....................
22 ......................................................
.........
Parity ............................................................
...........
....................
7 (See note 1) .................................
.........
A3 ......
Preamble .....................................................
Digital
(See note 4)
12 ......................................................
.........
Address ........................................................
...........
....................
8 ......................................................
.........
DME offset ...................................................
...........
....................
10
¥
511 m to + 511 m ....................
1 m
DME to MLS datum point distance .............
...........
....................
14
¥
8 191 m to + 8 191 m (See
note 3).
1 m
Spare ...........................................................
...........
....................
25 ......................................................
.........
Parity ............................................................
...........
....................
7 (See note 1) .................................
.........
A4 ......
Preamble .....................................................
Digital
(See note 5)
12 ......................................................
.........
Address ........................................................
...........
....................
8 ......................................................
.........
Back azimuth antenna .................................
...........
....................
10
¥
511 m to + 511 m (See note 3)
1 m
Back azimuth to MLS datum point distance
...........
....................
11 0 m to 2 047 m ............................
1 m
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08:20 May 17, 2019
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