What happened
On the morning of June 28, 2011, an EVA Air Dash-8-300, registration B-15231, was operating flight B7 642 from Magong, Penghu, to Tainan Airport. The aircraft was carrying 43 passengers and a crew of four. The flight was cleared to land on runway 18L. However, at 09:22, the aircraft landed on the unassigned runway 18R. There were no injuries to the passengers or crew, and the aircraft remained intact.
The investigation
The investigation examined the flight crew's performance, cockpit resource management, and environmental conditions. The TTSB analyzed the aircraft's approach profile, noting that the crew was utilizing a non-precision VOR/DME approach. The investigation also reviewed the cockpit voice recorder (CVR) and the airport's lighting and navigation infrastructure. The inquiry looked into the crew's communication, the impact of heavy rain and low visibility, and the operational procedures regarding stabilized approaches and runway identification at Tainan Airport.