ACTON, Calif.—Federal officials Saturday continued their investigation into the crash of a single-engine airplane near Acton, where two people were airlifted to a hospital.

The pilot of a single-engine Piper PA-28 reported an engine issue at about 6:30 p.m. Friday, said Federal Aviation Administration (FAA) spokesman Steve Kulm, adding that two people were aboard the aircraft. The rescued parties who were airlifted appeared to be conscious, according to NBC4.

The Piper Cherokee aircraft had left Palmdale Regional Airport at approximately 5:40 p.m., and flew around 30–35 miles before crash landing.

The plane appeared to be largely intact, NBC4 reported.

Los Angeles County firefighters and paramedics were dispatched at 6:46 p.m. to Moody Canyon Truck Trail and BP&L Road, according to a fire department dispatcher.

An emergency response perimeter was set up in the remote area, where no homes are located.

The FAA and the National Transportation Safety Board are investigating the crash, Mr. Kulm said.