User's Manual

UniLink UL-800/801 FANS
SCN 30.X
Operator’s Manual
76 23-20-06.02
December 2011
OPEN UniLink has displayed the uplink message to the user but the
message requires a downlink closure response message from
the user.
WILCO
hhmmZ
UniLink sent a WILCO downlink closure response message
initiated by the user at the indicated time.
UNABLE
hhmmZ
UniLink sent an UNABLE downlink closure response message
initiated by the user at the indicated time.
AFFIRM
hhmmZ
UniLink sent an AFFIRM downlink closure response message
initiated by the user at the indicated time.
NEGATV
hhmmZ
UniLink sent a Negative downlink closure response message
initiated by the user at the indicated time.
ROGER
hhmmZ
UniLink sent a ROGER downlink closure response message
initiated by the user at the indicated time.
STANDBY UniLink sent a STANDBY downlink response message initiated
by the user.
ABORTD
hhmmZ
UniLink aborted the uplink message at the indicated time
because it closed the CPDLC connection.
UniLink assigns a status to each downlink message as follows:
Status Description
QUEUED UniLink placed the downlink message in its downlink queue
but has not yet successfully transmitted it.
SENDING
[medium]
UniLink is transmitting the downlink message via the indicated
medium. (The possible media are VHF and SAT [SATCOM],
depending on UniLink configuration).
SENT
hhmmZ
UniLink successfully transmitted a downlink message at the
indicated time that does not require an uplink closure response
message from ATC.
OPEN UniLink successfully transmitted a downlink that requires an
uplink closure response message from ATC.
UNABLE
hhmmZ
UniLink received an UNABLE uplink closure response
message from ATC at the indicated time.
STANDBY UniLink received a STANDBY uplink response message from
ATC.
DEFERRED UniLink received a REQUEST DEFERRED uplink response
message from ATC.
ROGER
hhmmZ
UniLink received a ROGER uplink closure response message
from ATC at the indicated time.
AFFIRM UniLink received an AFFIRM uplink closure response message