POLK COUNTY, Ark. (KTHV) - Searchers says there is still no sign of a plane piloted by Jake Harrell.
"it can get pretty tedious, but the observer and a scanner will both look out opposite sides of the aircraft while the pilot focuses on flying," said Bobby Allison with the Civil Air Patrol.
Allison works as an observer in the cockpit of a search plane.
"We look for disturbed trees, broken branches, like you said, any signs of smoke," said Allison.
Jon Wenger is a part of a Facebook effort to find Harrell.
"Our intension is to be able to put many eyes on images that in an aircraft when you're searching at the slowest, even 80 knots, you only have seconds to look at," said Wenger.
Wenger said satellite images are posted online for 700 people to analyze.
"Thousands of people can look at them at their leisure and look for the anomalies that indicate the impact site," said Wenger.
He said using this technique they were able to find the plane of Dale Smith in January.
Click here for information on the Facebook effort to find Harrell.
Follow Daniel on Twitter @dan_wilkerson.