TULSA, Okla. (AP) — Investigators have examined a heater as they search for the cause of a plane crash in Kansas that killed four people with ties to Oklahoma's Oral Roberts University.
The heater was found in the wreckage of the eight-passenger plane that crashed May 11, 2012, near Chanute, Kan.
The National Transportation Safety Board issued a factual report this week about the crash that killed the plane's pilot and three others.
One woman survived. The Tulsa World reports Friday that she informed investigators that the heater produced a "terrible smell."
The plane was flying from Tulsa and was en route to a Christian youth rally in Council Bluffs, Iowa, when it crashed last year.
The NTSB has not yet issued a probable cause report about the crash.