The pilots who were killed alongside six passengers when a twin-engine Cessna Conquest crashed while attempting to land at a remote radar site in Southwest Alaska have now been identified.

Security Aviation confirmed that 73-year-old Captain Dave Furber of Anchorage and 34-year-old First Officer Sergei Zelenkov II of Chugiak were operating the aircraft when it struck mountainous terrain near the Cape Newenham Long Range Radar Site Airport on August 20.

All eight people aboard were killed.

The flight was being operated under contract for the U.S. Army Corps of Engineers, carrying personnel to the isolated Cold War-era radar facility on Alaska’s Bering Sea coast, roughly 450 miles southwest of Anchorage.

Investigators say fog, mist and extremely poor visibility complicated the approach. The pilots were flying under instrument flight rules and had reportedly aborted at least one landing attempt after missing the approach.

The six passengers were Army Corps of Engineers employees Sabrina Hansen and Hayden Scalis, U.S. Air Force 2nd Lt. Leah Borsich, and contractors Trevor McWilliams, Joseph “Joe” Palmer and Tom Fisher.

Security Aviation described both pilots as skilled and experienced members of its flight team and said it continues to mourn their loss.

The National Transportation Safety Board’s preliminary report is expected to provide the first detailed findings into what happened during the final approach.

Eight lives were lost in a challenging approach to one of Alaska’s most remote aviation destinations. The investigation may now shed more light on how the accident unfolded.