Weldon Marc Gilbert, the multimillionaire Lake Tapps pilot accused of sexually torturing and molesting dozens of young boys, pleaded guilty Thursday night in federal court in Seattle to 31 counts of production of child pornography, two counts of transporting a minor across state lines to engage in sexual activity and two counts of obstruction of...

Weldon Marc Gilbert, the multimillionaire Lake Tapps pilot accused of sexually torturing and molesting dozens of young boys, pleaded guilty Thursday night in federal court in Seattle to 31 counts of production of child pornography, two counts of transporting a minor across state lines to engage in sexual activity and two counts of obstruction of justice, Emily Langlie, spokeswoman for the U.S. Attorney’s Office said.

Gilbert entered the plea before Judge Ricardo Martinez after a daylong settlement conference, Langlie said. Gilbert’s case was scheduled for trial next Tuesday.

Under terms of the plea agreement, Langlie said, Gilbert’s sentence should be between 19 and 25 years in prison with lifetime supervised release. He has been in federal custody since his arrest in November 2007

Sentencing is scheduled for Aug. 18 in Tacoma federal court, Langlie said.

According to records, Gilbert was a pilot for UPS. Charges against him were filed in Pierce County.

Prosecutors had accused Gilbert of using his wealth to attract and groom his young victims by giving them airplane rides and taking them on exotic trips.

Charles E. Brown: 206-464-2206 or cbrown@seattletimes.com