cy 141618202224262830 segment 1 phase 1 tower services initial en route services departure...
TRANSCRIPT
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Segment 1 Phase 1Tower Services
Initial En Route Services
Departure Clearances (DCL)
Transfer of CommunicationsInitial Check-InAltimeter SettingsAltitudesAirborne Reroutes Controller Initiated Routes (Limited)Direct-to-Fix (Limited)Crossing Restrictions (Limited)
Data Comm Services Strategy
Data Comm RoutineCommunications
Segment 2Advanced Services
4D Trajectories, Dynamic RNP, Adv Flt Int Mgt w/ATC winds,D-TAXI
IOC
IOC
IOC
Full En Route Services
Tailored Arrivals (Limited)Holding Instructions (Limited)Advisory Messages (Limited)Speed and Headings Beacon Codes (Limited)Stuck MicrophoneController Initiated Routes (Full)Direct-to-Fix (Full)Crossing Restrictions (Full)
Segment 1 Phase 2 En Route Services
1. Transfer of Communications Service
• Initial S1P2 Includes ICAO facility ID and specified frequency
• Full S1P2 Adds constraints of time and position to the Contact and
Monitor messages
2
Full S1P2 Uplinks Full S1P2 Downlinks
UM118 AT [position] CONTACT [icaounitname] [frequency]
UM119 AT [time] CONTACT [icaounitname] [frequency]
UM121 AT [position] MONITOR [icaounitname] [frequency]
UM122 AT [time] MONITOR [icaounitname] [frequency]
Initial S1P2 Uplinks Initial S1P2 Downlinks
UM117 CONTACT [icaounitname] [frequency]
DM0 WILCO
UM120 MONITOR [icaounitname] [frequency]
DM1 UNABLE
DM2 STANDBY
DM20 REQUEST VOICE CONTACT
2. Initial Check-In Service
• Initial S1P2 Constrained to single altitude value altitude assignments
• Full S1P2 Adds downlink altitude assignments that can be a block
altitude
3
Full S1P2 Uplinks Full S1P2 Downlinks
DM77 ASSIGNED BLOCK [altitude] TO [altitude] - where Altitude can be a block altitude
Initial S1P2 Uplinks Initial S1P2 Downlinks
UM135 CONFIRM ASSIGNED ALTITUDE
DM38 ASSIGNED ALTITUDE [altitude]
3. Airborne Reroutes Service• Initial S1P2
Includes a route clearance defined by position or named procedure and clarifying text
• Full S1P2 Expands route clearance to include a named
procedure at a position
4
Full S1P2 Uplinks Full S1P2 Downlinks
UM84 AT [position] CLEARED [procedurename]
Initial S1P2 Uplinks Initial S1P2 Downlinks
UM79 CLEARED TO [position] VIA [routeclearance]
DM0 WILCO
UM80 CLEARED [routeclearance] DM1 UNABLE
UM83 AT [position] CLEARED [routeclearance]
DM2 STANDBY
UM169 [free text] DM3 ROGER
UM81 CLEARED [procedurename] DM65 DUE TO WEATHER
DM66 DUE TO AIRCRAFT PERFORMANCE
4. Altimeter Service
• Initial S1P2 The service is completely implemented in Initial
S1P2
5
Initial S1P2 Uplinks Initial S1P2 Downlinks
UM153 ALTIMETER [altimeter] DM3 ROGER
UM169 [free text]
5. Altitudes Services
• Initial S1P2 Limited single value altitude messages (e.g., climb,
maintain, descend) • Full S1P2
Adds uplinks related to immediate stops, reporting of altitudes; expands uplink parameters (e.g. block altitudes, descent rates); and adds altitude related pilot requests
5. Altitudes Services
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Initial S1P2 UplinksUM19 MAINTAIN [altitude]
UM38 IMMEDIATELY CLIMB TO [altitude]
UM20 CLIMB TO AND MAINTAIN [altitude]
UM39 IMMEDIATELY DESCEND TO [altitude]
UM23 DESCEND TO AND MAINTAIN [altitude]
UM166 DUE TO TRAFFIC
UM36 EXPEDITE CLIMB TO [altitude]
UM167 DUE to AIRSPACE RESTRICTION
UM37 EXPEDITE DESCENT TO [altitude]
UM169 [free text]
UM177 AT PILOTS DISCRETION
Full S1P2 UplinksUM26 CLIMB TO REACH [altitude] BY [time]
UM41 IMMEDIATELY STOP DESCENT AT [altitude]
UM27 CLIMB TO REACH [altitude] BY [position]
UM128 REPORT LEAVING [altitude]
UM28 DESCEND TO REACH [altitude] BY [time]
UM129 REPORT LEVEL [altitude]
UM29 DESCEND TO REACH [altitude] BY [position]
UM133 CONFIRM ALTITUDE
UM30 MAINTAIN BLOCK [altitude] TO [altitude]
UM173 DESCEND AT [vertical rate] MINIMUM
UM31 CLIMB TO AND MAINTAIN BLOCK [altitude] TO [altitude]
UM174 DESCEND AT [vertical rate] MAXIMUM
UM32 DESCEND TO AND MAINTAIN BLOCK [altitude] TO [altitude]
UM175 REPORT REACHING [altitude]
UM33 CRUISE [altitude] UM180 REPORT REACHING BLOCK [altitude] TO [altitude]
UM40 IMMEDIATELY STOP CLIMB AT [altitude]
Initial S1P2 DownlinksDM0 WILCO DM65 DUE TO WEATHER
DM1 UNABLE DM66 DUE TO AIRCRAFT PERFORMANCE
DM2 STANDBY
Full S1P2 Downlinks
DM6 REQUEST [altitude]
DM7 REQUEST BLOCK [altitude] TO [altitude]
DM9 REQUEST CLIMB TO [altitude]
DM10 REQUEST DESCENT TO [altitude]
DM32 PRESENT ALTITUDE [altitude]
DM37 LEVEL [altitude]
DM76 REACHING BLOCK [altitude] TO [altitude]
DM77 ASSIGNED BLOCK [altitude] TO [altitude]
6. Controller Initiated Routes Service
• Initial S1P2 Includes uplinks including proceed direct to position, route
clearance, or procedure, and related cause (traffic, airspace restriction)
Entry via keyboard entry from the R and RA positions Entry via route menu from RA position
• Full S1P2 Adds uplinks including proceed back on route, rejoin route
by time/position, holding at position, report back on route Adds downlinks for pilot to request procedure name,
request route clearance, and report back on route Entry via Trackball entry from the R and RA positions
• RA entry is via the Graphic Plan Display Entry via Route menu from R position
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6. Controller Initiated Routes Service
Initial S1P2 Uplinks Initial S1P2 Downlinks
UM74 PROCEED DIRECT TO [position]
DM0 WILCO
UM79 CLEARED TO [position] VIA [routeclearance]
DM1 UNABLE
UM80 CLEARED [routeclearance] DM2 STANDBY
UM81 CLEARED [procedurename] DM22 REQUEST DIRECT TO [position]
UM83 AT [position] CLEARED [routeclearance]
DM40 ASSIGNED ROUTE [routeclearance]
UM137 CONFIRM ASSIGNED ROUTE
DM65 DUE TO WEATHER
UM166 DUE TO TRAFFIC DM66 DUE TO AIRCRAFT PERFORMANCE
UM167 DUE TO AIRSPACE RESTRICTION
UM169 [free text]
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Full S1P2 Uplinks
UM67 PROCEED BACK ON ROUTE
UM68 REJOIN ROUTE BY [position]
UM69 REJOIN ROUTE BY [time]
UM71 EXPECT BACK ON ROUTE BY [time]
UM72 RESUME OWN NAVIGATION
UM75 WHEN ABLE PROCEED DIRECT TO [position]
UM76 AT [time] PROCEED DIRECT TO [position]
UM82 CLEARED TO DEVIATE UP TO [distanceoffset][direction] OF ROUTE
UM84 AT [position] CLEARED [procedurename]
UM127 REPORT BACK ON ROUTE
Full S1P2 Downlinks
DM23 REQUEST [procedure name]
DM24 REQUEST [routeclearance]
DM25 REQUEST CLEARANCE
DM41 BACK ON ROUTE
7. Direct to Fix Service
• Initial S1P2 Includes clearance to proceed direct to a specified position
and downlink request to proceed direct Direct-to-fix entry from keyboard
• Full S1P2 Adds uplinks including at position/altitude proceed direct to
a position Entry via trackball entry/data block (R position) or route
menu (R and RA positions)
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Initial S1P2 Uplinks Initial S1P2 Downlinks
UM74 PROCEED DIRECT TO [position]
DM0 WILCO
UM0 UNABLE (note - response to DM22 as per GOLD)
DM1 UNABLE
DM2 STANDBY
DM22 REQUEST DIRECT TO [position]
Full S1P2 Uplinks Full S1P2 Downlinks
UM77 AT [position] PROCEED DIRECT TO [position]
UM78 AT [altitude] PROCEED DIRECT TO [position]
UM96 FLY PRESENT HEADINGS (note - response to DM22 as per GOLD)
8. Holding Instructions Service
• Initial S1P2 Holding Instructions service is NOT provided
• Full S1P2 (Limited) Adds uplink to hold at a position Leverages other messages contained in other
services (e.g., controller initiated routes)
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Full S1P2 Uplinks Full S1P2 DownlinksUM92 HOLD AT [position] AS PUBLISHED MAINTAIN [altitude]
UM93 EXPECT FURTHER CLEARANCE AT [time]
9. Crossing Restrictions Service• Initial S1P2
Limited crossing restrictions at a specific fix, at a specific altitude with or without a specific speed
Entry of named fixes via the keyboard at the R- and RA positions A menu based capability is needed for the entry of crossing
restrictions. These would be preset restrictions, defined in adaptation
• Full S1P2 Adds ability to instruct an aircraft to cross a specific fix at a specific
time FLM will be able to define these preset restrictions Controller will be able to enter a crossing a point that is a point in
space (lat/long) rather than a named fix R-Position will have the option of entering crossing restrictions via
the trackball or data block interaction.
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9. Crossing Restrictions Service
Initial S1P2 Uplinks Initial S1P2 Downlinks
UM49 CROSS [position] AT AND MAINTAIN [altitude]
DM0 WILCO
UM61 CROSS [position] AT AND MAINTAIN [altitude] AT [speed]
DM1 UNABLE
DM2 STANDBY
Full S1P2 Uplinks Full S1P2 Downlink
UM46 CROSS [position] AT [altitude]
UM47 CROSS [position] AT OR ABOVE [altitude]
UM48 CROSS [position] AT OR BELOW [altitude]
UM50 CROSS [position] BETWEEN [altitude] AND [altitude]
UM51 CROSS [position] AT [time]
UM55 CROSS [position] AT [speed]
UM56 CROSS [position] AT OR LESS THAN [speed]
UM57 CROSS [position] AT OR GREATER THAN [speed]
UM62 AT [time] CROSS [position] AT AND MAINTAIN [altitude]
UM63 AT [time] CROSS [position] AT AND MAINTAIN [altitude] AT [speed]
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10. Tailored Arrival Service
• Initial S1P2 Tailored arrival service is NOT provided
• Full S1P2 (Limited) Controller ability to enable an efficient descent with a clearance for
specified routing and descent profile
.
14
Full S1P2 Uplinks Full S1P2 Downlinks
UM19 MAINTAIN [altitude]
UM79 CLEARED TO [position] VIA [routeclearance]
UM80 CLEARED [routeclearance]
UM81 CLEARED [procedurename]
UM83 AT [position] CLEARED [routeclearance]
UM84 AT [position] CLEARED [procedurename]
UM169 [free text]
11. Advisory Services
• Initial S1P2 Advisory service is NOT provided
• Full S1P2 (Limited) Used to convey information to a pilot but controller is not
expecting a response Leverages S1P2 UM169 [free text] message for sending
advisory messages
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Full S1P2 Uplinks Full S1P2 Downlinks
UM169 [free text]
12. Speeds Service
• Initial S1P2 Speeds service is NOT provided
• Full S1P2 (Limited) Enables controller to request to maintain, increase,
reduce or confirm speed Allows pilot initiated downlink for speed
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Full S1P2 Uplinks
UM106 MAINTAIN [speed] UM113 REDUCE SPEED TO [speed]
UM107 MAINTAIN PRESENT SPEED UM114 REDUCE SPEED TO [speed] OR LESS
UM108 MAINTAIN [speed] OR GREATER UM115 DO NOT EXCEED [speed]
UM109 MAINTAIN [speed] OR LESS UM116 RESUME NORMAL SPEED
UM111 INCREASE SPEED TO [speed] UM134 CONFIRM SPEED
UM112 INCREASE SPEED TO [speed] OR GREATER UM136 CONFIRM ASSIGNED SPEED
Full S1P2 Downlinks
DM18 REQUEST [speed]
DM34 PRESENT SPEED [speed]
DM39 ASSIGNED SPEED [speed]
13. Headings Service
• Initial S1P2 Headings service NOT provided
• Full S1P2 (Full) Enable controller to create and uplink a heading to an
aircraft; will automatically update 4th line of data block
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Full S1P2 Uplinks Full S1P2 Downlinks
UM68 REJOIN ROUTE BY [position] DM26 REQUEST WEATHER DEVIATION TO [position] VIA [routeclearance]
UM94 TURN [direction] HEADING [degrees] DM27 REQUEST WEATHER DEVIATION UP TO [distanceoffset] [direction] OF ROUTE
UM96 FLY PRESENT HEADING DM35 PRESENT HEADING [degrees]
UM97 AT [position] FLY HEADING [degrees] DM70 REQUEST HEADING [degrees]
UM98 IMMEDIATELY TURN [direction] HEADING [degrees]
UM145 CONFIRM HEADING
UM0 UNABLE (Note - Allowed response to DM26-27 as per GOLD)
14. Beacon Codes Service
• Initial S1P2 Beacon Codes service is NOT provided
• Full S1P2 (Limited) Automation will populate the assigned beacon code in
the UM123 for controller uplink Beacon Code is editable in the event the controller
needs to change it.
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Full S1P2 Uplinks Full S1P2 Downlinks
UM123 SQUAWK [beaconcode] DM47 SQUAWKING [beaconcode]
UM179 SQUAWK IDENT
15. Stuck Microphone Service
• Initial S1P2 Stuck Microphone service is NOT provided
• Full S1P2 (Limited) Provide the ability to uplink a message instructing pilots
of Data Comm equipped aircraft to check their microphone
19
Full S1P2 Uplinks Full S1P2 Downlinks
UM169 [free text]
16. Other Messages
A. Generic Service Messages
B. System/Error Messages
C. Emergency Messages
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16 A. Generic Service Messages
Full S1P2 Uplinks Full S1P2 Downlinks
UM165 THEN
21
Initial S1P2 Uplinks
Initial S1P2 Downlinks
UM0 UNABLE DM65 DUE TO WEATHER
UM1 STANDBY DM66 DUE TO AIRCRAFT PERFORMANCE
UM3 ROGER
UM4 AFFIRM
UM5 NEGATIVE
• Initial S1P2 General controller response messages Allows pilot clarification of response due to weather or
aircraft performance• Full S1P2
Adds controller ability to uplink “THEN”
16 B. System/Error Messages
• Initial S1P2 Provides all necessary messages
• Full S1P2 No changes
22
Initial S1P2 Uplinks Initial S1P2 Downlinks
Um159 ERROR [errorinformation] DM62 ERROR [errorinformation]
UM160 NEXT DATA AUTHORITY [icaofacilitydesignation]
DM63 NOT CURRENT DATA AUTHORITY
UM161 END SERVICE DM64 [icaofacilitydesignation]
UM162 SERVICE UNAVAILABLE DM65 DUE TO WEATHER
UM163 system message ([icaofacilitydesignation] [tp4Table])
DM66 DUE TO AIRCRAFT PERFORMANCE
UM178 [trackdetailmsg-deleted] DM67 [free text]
DM68 [free text]
16 C. Emergency Messages • Initial S1P2
Provides all necessary messages*
• Full S1P2 No changes
23
Initial S1P2 Uplinks Initial S1P2 DownlinksUM131 REPORT REMAINING FUEL AND PERSONS ON BOARD DM47 SQUAWKING [beaconcode] (if beaconcode is emergency code 7500,
7600, or 7700, then emergency session is created)
DM55 PAN PAN PAN
DM56 MAYDAY MAYDAY MAYDAY
DM57 [remainingfuel] OF FUEL REMAINING AND [remainingsouls] SOULS ON BOARD
DM58 CANCEL EMERGENCY
DM59 DIVERTING TO [position] VIA [routeclearance]
DM60 OFFSETTING [distanceoffset] [direction] OF ROUTE
DM61 DESCENDING TO [altitude]
DM80 DEVIATING UP TO [distancepoffset] [direction] OF ROUTE
* When an emergency session exists, all downlinks (including those not supported in S1) are accepted and message content
will be displayed at a designated position(s)
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FANS 1/A (+) messages NOT RECOMMENDED for Segment 1
Overview
• The following slides identify specific messages for a particular service that are not recommended for Segment 1*
• These messages remain candidates for service expansion in Segment 2
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*Note: When an emergency session exists , all downlinks (including those not supported in S1) are accepted and message content will be
displayed at a designated position(s)
1. Transfer of Communications Service:Messages Not Applicable for Segment 1
Uplink Downlink
DM21 REQUEST VOICE CONTACT [frequency]
DM89 MONITORING [unit name] [frequency]
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2. Initial Check In Service: Messages Not Applicable for Segment 1
Uplink DownlinkDM74 MAINTAIN OWN SEPARATION AND VMC
DM79 ATIS [atis code]
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3. ABRR ServiceMessages Not Applicable for Segment 1
Uplink DownlinkUM99 EXPECT [procedure name]
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5. Altitudes Service:Messages Not Applicable for Segment 1 (1/2)
Uplink MessagesUM6 EXPECT [altitude] UM 16 AT [position] EXPECT DESCENT TO
[altitude] UM148 WHEN CAN YOU ACCEPT [altitude]
UM7 EXPECT CLIMB AT [time] UM17 AT [time] EXPECT CRUISE CLIMB TO [altitude]
UM149 CAN YOU ACCEPT [altitude] AT [position]
UM8 EXPECT CLIMB AT [position] UM18 AT [position] EXPECT CRUISE CLIMB TO [altitude]
UM150 CAN YOU ACCEPT [altitude] AT [time]
UM9 EXPECT DESCENT AT [time] UM21 AT [time] CLIMB TO AND MAINTAIN [altitude]
UM171 CLIMB AT [vertical rate] MINIMUM
UM10 EXPECT DESCENT AT [position] UM22 AT [position] CLIMB TO AND MAINTAIN [altitude]
UM172 CLIMB AT [vertical rate] MAXIMUM
UM11 EXPECT CRUISE CLIMB AT [time] UM24 AT [time] DESCEND TO AND MAINTAIN [altitude]
UM181 REPORT DISTANCE [to/from] [position]
UM12 EXPECT CRUISE CLIMB AT [position] UM25 AT [position] DESCEND TO AND MAINTAIN [altitude]
UM13 AT [time] EXPECT CLIMB TO [altitude] UM34 CRUISE CLIMB TO [altitude]
UM14 AT [position] EXPECT CLIMB TO [altitude] UM35 CRUISE CLIMB ABOVE [altitude]
UM15 AT [time] EXPECT DESCENT TO [altitude]
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5. Altitudes Service: Messages Not Applicable for Segment 1 (2/2)
Downlink Messages
DM8 REQUEST CRUISE CLIMB TO [altitude] DM52 WHEN CAN WE EXPECT LOWER ALTITUDE
DM11 AT [position] REQUEST CLIMB TO [altitude] DM53 WHEN CAN WE EXPECT HIGHER ALTITUDE
DM12 AT [position] REQUEST DESCENT TO [altitude] DM54 WHEN CAN WE EXPECT CRUISE CLIMB TO [altitude]
DM13 AT [time] REQUEST CLIMB TO [altitude] DM69 REQUEST VMC DESCENT
DM14 AT [time] REQUEST DESCENT TO [altitude] DM72 REACHING [altitude]
DM28 LEAVING [altitude]
DM29 CLIMBING TO [altitude]
DM30 DESCENDING TO [altitude]
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6. Controller Initiated Routes Service:Messages Not Applicable for Segment 1
Uplink DownlinkUM70 EXPECT BACK ON ROUTE BY [position] DM31 PASSING [position]
UM85 EXPECT [routeclearance] DM33 PRESENT POSITION [position]
UM86 AT [position] EXPECT [routeclearance] DM40 ASSIGNED ROUTE [routeclearance]
UM130 REPORT PASSING [position] DM42 NEXT WAYPOINT [position]
UM132 CONFIRM POSITION DM43 NEXT WAYPOINT ETA [time]
UM137 CONFIRM ASSIGNED ROUTE DM44 ENSUING WAYPOINT [position]
UM138 CONFIRM TIME OVER REPORTED WAYPOINT DM45 REPORTED WAYPOINT [position]
UM139 CONFIRM REPORTED WAYPOINT DM46 REPORTED WAYPOINT [time]
UM140 CONFIRM NEXT WAYPOINT
UM141 CONFIRM NEXT WAYPOINT ETA DM48 POSITION REPORT [positionreport]
UM142 CONFIRM ENSUING WAYPOINT DM51 WHEN CAN WE EXPECT BACK ON ROUTE
UM146 CONFIRM GROUND TRACK
UM147 REQUEST POSITION REPORT
31
7. Direct to Fix Service:Messages Not Applicable for Segment 1
Uplink DownlinkUM87 EXPECT DIRECT TO [position]
UM88 AT [position] EXPECT DIRECT TO [position]
UM89 AT [time] EXPECT DIRECT TO [position]
UM90 AT [altitude] EXPECT DIRECT TO [position]
32
8. Holding Instructions ServiceMessages Not Applicable for Segment 1
33
Uplink DownlinkUM91 HOLD AT [position] MAINTAIN [altitude] INBOUND TRACK [degrees] [direction] TURNS [leg type]
9. Crossing Restrictions Service:Messages Not Applicable for Segment 1
Uplink DownlinkUM42 EXPECT TO CROSS [position] AT [altitude]
UM43 EXPECT TO CROSS [position] AT OR ABOVE [altitude]
UM44 EXPECT TO CROSS [position] AT OR BELOW [altitude]
UM45 EXPECT TO CROSS [position] AT AND MAINTAIN [altitude]
UM52 CROSS [position] AT OR BEFORE [time]
UM53 CROSS [position] AT OR AFTER [time]
UM54 CROSS [position] BETWEEN [time] AND [time]
UM58 CROSS [position] AT [time] AT [altitude]
UM59 CROSS [position] AT OR BEFORE [time] AT [altitude]
UM60 CROSS [position] AT OR AFTER [time] AT [altitude]
34
10. Tailored Arrivals Service:Messages Not Applicable for Segment 1
Uplink Downlink
none none
35
11. Advisory Service:Messages Not Applicable for Segment 1
Uplink DownlinkUM154 RADAR SERVICE TERMINATED
UM155 RADAR CONTACT [position]
UM156 RADAR CONTACT LOST
UM158 ATIS [atis code]
UM182 CONFIRM ATIS CODE
36
12. Speeds Service:Messages Not Applicable for Segment 1
Uplink DownlinkUM100 AT [time] EXPECT [speed] DM19 REQUEST [speed] TO [speed]
UM101 AT [position] EXPECT [speed] DM49 WHEN CAN WE EXPECT [speed]
UM102 AT [altitude] EXPECT [speed] DM50 WHEN CAN WE EXPECT [speed] TO [speed]
UM103 AT [time] EXPECT [speed] TO [speed]
UM104 AT [position] EXPECT [speed] TO [speed]
UM105 AT [altitude] EXPECT [speed] TO [speed]
UM110 MAINTAIN [speed] TO [speed]
UM151 WHEN CAN YOU ACCEPT [speed]
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13. Headings Service:Messages Not Applicable for Segment 1
Uplink DownlinkUM64 OFFSET [distanceoffset] [direction] OF ROUTE DM15 REQUEST OFFSET [distanceoffset] [direction] OF
ROUTE
UM65 AT [position] OFFSET [distanceoffset] [direction] OF ROUTE
DM16 AT [position] REQUEST OFFSET [distanceoffset] [direction] OF ROUTE
UM66 AT [time] OFFSET [distanceoffset] [direction] OF ROUTE
DM17 AT [time] REQUEST OFFSET [distanceoffset] [direction] OF ROUTE
UM95 TURN [direction] GROUND TRACK [degrees] DM36 PRESENT GROUND TRACK [degrees]
UM152 WHEN CAN YOU ACCEPT [distanceoffset] [direction] OFFSET
DM71 REQUEST GROUND TRACK [degrees]
38
14. Beacon Codes Service:Messages Not Applicable for Segment 1
Uplink DownlinkUM124 STOP SQUAWK
UM125 SQUAWK ALTITUDE
UM126 STOP ALTITUDE SQUAWK
UM144 CONFIRM SQUAWK
39
15. Stuck Microphone Service:Messages Not Applicable for Segment 1
Uplink DownlinkUM157 CHECK STUCK MICROPHONE [frequency]
40
16. Multiple Service:Messages Not Applicable for Segment
1
Uplink Downlink
UM2 REQUEST DEFERRED DM4 AFFIRM
UM164 WHEN READY DM5 NEGATIVE
UM168 DISREGARD DM75 AT PILOTS DISCRETION
DM78 AT [time] [distance] [to/from] [position]
41