TBL 5-3-3 Lateral Downlink Message Elements (LATD) CPDLC Message Sets Operational Definition in PANS-ATM (Doc 4444) FANS 1/A ATN B1 Response Message Element Identifier DM59 DIVERTING TO (position) VIA (route clearance) Note 1. - H alert attribute Note 2. - N response attribute N1 LATD-5 Report indicating diverting to the specified position via the specified route, which may be sent without any previous coordination done with ATC. DIVERTING TO (position) VIA (en-route data) (arrival approach data[O]) DM60 OFFSETTING (distance offset) (direction) OF ROUTE Note 1. - H alert attribute Note 2. - N response attribute N1 LATD-6 Report indicating that the aircraft is offsetting to a parallel track at the specified distance in the specified direction off from the cleared route. OFFSETTING (specified distance) (direction) OF ROUTE DM80 DEVIATING (deviation offset) (direction) OF ROUTE Note 1. - H alert attribute Note 2. - N response attribute N1 LATD-7 Report indicating deviating specified distance or degrees in the specified direction from the cleared route. DEVIATING (specifiedDeviation ) (direction) OF ROUTE Message Element Intended Use Format for Message Element Display 1 ICAO Document 10037, Global Operational Data Link (GOLD) Manual has these values set to Y in their table. TBL 5-3-4 Level Uplink Message Elements (LVLU) CPDLC Message Sets Operational Definition in PANS-ATM (Doc 4444) FANS 1/A ATN B1 Response Message Element Identifier UM19 MAINTAIN (altitude) Note - Used for a single level UM19 MAINTAIN (level) W/U LVLU-5 Instruction to maintain the specified level or vertical range. MAINTAIN (level) UM20 CLIMB TO AND MAINTAIN (altitude) Note - Used for a single level UM20 CLIMB TO (level) W/U LVLU-6 Instruction that a climb to the specified level or vertical range is to commence and once reached is to be maintained. CLIMB TO (level) En Route Procedures Message Element Intended Use Format for Message Element Display 5-3-3