User's Guide

User Guide for the Envoy Data Link
Document Number: UG-15000 Rev. A Page 50 of 173
3.5.4 POS REPORT Message – FANS 1/A+
Figure 3-19 POS REPORT
A pilot-initiated position report contains current location data, up to two next fix IDs, and ETAs, as
detailed in Table 3-13.
Table 3-13 POS REPORT Fields
LSK
Label
Description
--
ALT
Required read-only bus-fed A429 Pressure Altitude.
L1
POS
Required. Current fix position 4 or 5 alpha characters.
L2
NEXT
Optional. Next fix position. 4 or 5 alpha characters.
L3
NEXT+1
Optional. Next fix position plus one. 4 or 5 alpha characters.
L4
SPEED
Optional. Autopopulated or manually input. M or KTS.
L5
TEMP
Optional. Autopopulated or manually input. Degrees Celsius.
R1
ATA
Required. Actual time of arrival or time at current position.
R2
NEXT ETA
Optional. Manually input. Estimated Time of Arrival at next POS waypoint.
R3
DEST ETA
Optional. Manually input. Estimated Time of Arrival at destination.
R4
REMAINING FUEL
Optional. Manually input. Remaining fuel input by Time in HH:MM.
R5
WIND
Optional. Autopopulated or manually input. Direction (degrees)/Speed (kts).
See also Section 5.4.2.3 ACARS Position Report