Authorities say a weekend plane crash in Pennsylvania that killed two people occurred during a routine flight review to test the pilot's flying proficiency.
Police in Chester County's West Goshen Township identified the victims of Sunday's crash as 67-year-old Richard Poch, of West Chester, and 64-year-old Joseph Deal, of Drexel Hill.
The Philadelphia Inquirer reports that Poch was a certified flight instructor and Deal was a certified pilot who was flying the aircraft.
The Piper PA28 crashed shortly after taking off from Brandywine Airport, about 20 miles west of Philadelphia.
Authorities say it appeared the pilot lost control in the plane before it went down.
The National Transportation Safety Board will conduct an investigation with the Federal Aviation Administration and will determine the cause of the crash.