Narrative:

Shortly after take off a 'no autoland' alert appeared in the asa [approach status annunciator] window. Shortly thereafter we discovered that VNAV and LNAV had failed. The autothrottles and captain's internal airspeed bug also failed. We continued to climb out on the departure SID. I was hand flying at this point. The captain and the relief pilot began troubleshooting the situation. I attempted to engage the center autopilot but it had also failed. I tried the left and right autopilots but neither of them would engage. My flight director and the captain's flight director had also failed. I tried switching my flight director to the center and left FCC but that did not help to restore my flight director.the relief pilot attempted to contact maintenance control on satcom but satcom had also failed. I suggested contacting departure station maintenance on VHF since we were approximately 150 NM out. They suggested pulling and resetting some circuit breakers but stated that would require captain emergency authority. The captain agreed and we pulled and reset some circuit breakers. None of the affected systems were restored. I was able to get the right autopilot to engage prior to us pulling any circuit breakers. At this point we were in contact with ATC who cleared us to hold. We were unsuccessful in restoring the failed components. We decided that the prudent course of action would be to return to ZZZZ. We dumped all center tank fuel; declared an emergency; and requested clearance to ZZZZ. The captain briefed the flight attendants and I made an uneventful overweight landing. After landing and clearing the runway; we were met by fire and rescue. They inspected the outside of the aircraft and stated there was no smoke or fire. We taxied to the hardstand.

Related reports:

Google
 

Original NASA ASRS Text

Title: A B767-300 Flight Crew returned to their departure airport when they were unable to resolve the loss of many autoflight functions.

Narrative: Shortly after take off a 'No Autoland' alert appeared in the ASA [Approach Status Annunciator] window. Shortly thereafter we discovered that VNAV and LNAV had failed. The autothrottles and Captain's internal airspeed bug also failed. We continued to climb out on the departure SID. I was hand flying at this point. The Captain and the Relief Pilot began troubleshooting the situation. I attempted to engage the Center Autopilot but it had also failed. I tried the left and right autopilots but neither of them would engage. My Flight Director and the Captain's Flight Director had also failed. I tried switching my Flight Director to the center and left FCC but that did not help to restore my Flight Director.The Relief pilot attempted to contact Maintenance Control on SATCOM but SATCOM had also failed. I suggested contacting departure station maintenance on VHF since we were approximately 150 NM out. They suggested pulling and resetting some circuit breakers but stated that would require Captain Emergency Authority. The Captain agreed and we pulled and reset some circuit breakers. None of the affected systems were restored. I was able to get the Right Autopilot to engage prior to us pulling any circuit breakers. At this point we were in contact with ATC who cleared us to hold. We were unsuccessful in restoring the failed components. We decided that the prudent course of action would be to return to ZZZZ. We dumped all center tank fuel; declared an emergency; and requested clearance to ZZZZ. The Captain briefed the Flight Attendants and I made an uneventful overweight landing. After landing and clearing the runway; we were met by Fire and Rescue. They inspected the outside of the aircraft and stated there was no smoke or fire. We taxied to the hardstand.

Data retrieved from NASA's ASRS site as of April 2012 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.