PenAir has narrowed down the cause of an engine failure that forced one of airplanes to make an emergency landing in Sand Point earlier this month.
“The engine appears to have suffered from a compressor stall,” or a disruption to the turbine’s airflow, according to spokesperson Missy Roberts.
The reason behind that disruption is still unclear.
"The engine will be sent to the engine shop for disassembly and a complete inspection work-up for further evaluation," said Roberts.
Meanwhile, a new engine has been installed in the Saab 340 and the plane has resumed normal passenger service.