Air carrier flight crew had difficulty with their controller pilot data link communication clearance...

Attributes
ACN	1377985
Time
Date	201608
Local Time Of Day	1201-1800
Place
Locale Reference	ZLA.ARTCC
State Reference	CA
Aircraft 1
Make Model Name	Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Cruise Descent
Flight Plan	IFR
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types

Narrative:

Controller pilot data link communications (cpdlc) had revised clearance. [SID].hec.... Dispatch release had [SID].tnp and Seavu2 arrival lax; transition off tnp. We loaded exactly what was in our cpdlc clearance. Once enroute we were given a decent clearance by ATC to maintain FL240. After crossing hec; the aircraft turned left towards the next way point tnp. ATC immediately gave us right turn clearance 40 degrees to avoid military airspace. ATC questioned our route; which we replied was what we had received from cpldc. ATC then cleared us directly to gramm and the riivr 3 lax. Cpldc did not indicate riivr 3 arrival; and dispatch release did not indicate riivr 3. Landed lax without further incident.

Original NASA ASRS Text

Title: Air carrier flight crew had difficulty with their Controller Pilot Data Link Communication clearance resulting in a course deviation.

Narrative: Controller Pilot Data Link Communications (CPDLC) had revised clearance. [SID].HEC.... Dispatch release had [SID].TNP and Seavu2 arrival LAX; transition off TNP. We loaded exactly what was in our CPDLC clearance. Once enroute we were given a decent clearance by ATC to maintain FL240. After crossing HEC; the aircraft turned left towards the next way point TNP. ATC immediately gave us right turn clearance 40 degrees to avoid military airspace. ATC questioned our route; which we replied was what we had received from CPLDC. ATC then cleared us directly to GRAMM and the RIIVR 3 LAX. CPLDC did not indicate RIIVR 3 arrival; and dispatch release did not indicate RIIVR 3. Landed LAX without further incident.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Air carrier flight crew had difficulty with their controller pilot data link communication clearance resulting in a course deviation.