User's Manual

SYSTEM DESCRIPTION AND INSTALLATION MANUAL
T
3
CAS/Part No.9005000
Table 1-32: BDS 0,9 Airborne Velocity Subtypes 1 & 2 – Velocity Over Ground (cont.)
Bits
Parameter
Parameter Data
External Source(s)
50-56
Difference from
Geo and Baro
Altitudes
Feet
Label 370 Height Above Ellipsoid (HAE)
from GPS 1 or 2 (best HIL value) or Label
076 Altitude (MSL) from GPS 1 or 2 (best
HIL value) or Label 203 Uncorrected
Barometric Altitude from ADC.
NOTE:
Subtype 1 is used when NS and EW velocities are valid and both are less than 1022
knots.
Subtype 2 is used when NS and EW velocities are valid and both are greater than 1022
knots.
Table 1-33: BDS 0,9 Airborne Velocity Subtypes 3 & 4 – Airspeed and Heading
Bits
Parameter
Parameter Data
External Source(s)
1-5
Format Type
Code
19
6-8
Sub Type
1 (Ground Speed
Normal)
Label 166 N/S velocity and Label 174
E/W velocity from GPS.
9
Intent Change
Flag
10
IFR Capability
Flag
11-13
NACv
0, 1, 2, 3, 4.
Label 247 HFOM from GPS.
Label 136 VFOM from GPS.
14
Status
N/A
Available
15-24
Magnetic
Heading
Degrees
Label 320 Magnetic Heading from FMS or
IRS.
25
Airspeed Type
IAS
TAS
26-35
Airspeed
N/A
0 to > 1021 Knots
0 to>4084 Knots
Label 206 Indicated Airspeed or Label
210 True Airspeed from ADC.
36
Source of
Vertical Rate
N/A
BARO
GEO
37
Sign of Vertical
Rate
+
-
Pub. No. 8600200-001, Revision 004
34-45-29
1-127
04 Nov 2014
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