Narrative:

Air carrier X departed hkg xx aug arrival lax aug/xx/01. Air carrier reported gates on cpdlc at XA12Z. We were expecting handoff to ZLA. At XA20Z we sent cpdlc message requesting frequency and handoff. No answer from oakland oceanic. At approximately XA23Z we called ZLA to request frequency. We were answered by various agencies but heard to contact center on XXX.xx. We established contact with ZLA and got our descent out of FL370 and were told we entered a military warning area but there was no problem and no paper was being filed. At no time did anyone try to contact us on guard or secal HF. Cpdlc never logged us off until nearing parking at our gate. There was no further incident after establishing contact with ZLA.

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Original NASA ASRS Text

Title: B747 FLT CREW IS UNABLE TO ESTABLISH CONTACT WITH OCEANIC CTLR VIA CPDLC (CTLR PLT DATA LINK COMS) AND ENTERS A WARNING AREA ENRTE TO LAX.

Narrative: ACR X DEPARTED HKG XX AUG ARR LAX AUG/XX/01. ACR RPTED GATES ON CPDLC AT XA12Z. WE WERE EXPECTING HDOF TO ZLA. AT XA20Z WE SENT CPDLC MESSAGE REQUESTING FREQ AND HDOF. NO ANSWER FROM OAKLAND OCEANIC. AT APPROX XA23Z WE CALLED ZLA TO REQUEST FREQ. WE WERE ANSWERED BY VARIOUS AGENCIES BUT HEARD TO CONTACT CTR ON XXX.XX. WE ESTABLISHED CONTACT WITH ZLA AND GOT OUR DSCNT OUT OF FL370 AND WERE TOLD WE ENTERED A MIL WARNING AREA BUT THERE WAS NO PROB AND NO PAPER WAS BEING FILED. AT NO TIME DID ANYONE TRY TO CONTACT US ON GUARD OR SECAL HF. CPDLC NEVER LOGGED US OFF UNTIL NEARING PARKING AT OUR GATE. THERE WAS NO FURTHER INCIDENT AFTER ESTABLISHING CONTACT WITH ZLA.

Data retrieved from NASA's ASRS site as of July 2007 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.