What happened
On the morning of 10 February 2011, a SA-227-BC Metro III, registration EC-ITP, was performing a scheduled passenger service from Belfast City Airport to Cork Airport. The flight, operated by a Spanish company, was carrying ten passengers and two crew members. Due to low visibility at Cork Airport, the flight crew performed two unsuccessful instrument approaches before attempting a third approach to Runway 17.
During this final approach, the aircraft deviated from the runway centerline. As the aircraft descended, the crew reduced engine power and subsequently increased it. During this period, an aural warning tone was heard on the cockpit voice recorder. Although a go-around was initiated just below 100 feet, the aircraft experienced a significant roll to the left, followed by a rapid roll to the right. The right wingtip struck the runway surface, and the aircraft flipped into a fully inverted position, sliding 189 meters from the initial impact point. The impact caused engine fires and severe damage to the propellers.
The investigation
The AAIU examined the flight data, cockpit voice recordings, and the aircraft's maintenance history. The investigation focused on the aircraft's performance during the low-visibility procedures and the technical state of the engines and propellers. Investigators also reviewed the operational relationship between the aircraft provider, the ticket seller, and the air operator. Additionally, the professional experience and training of the flight crew were scrutinized, as the commander had been recently promoted and the co-pilot was a new addition to the operation.
Findings
- The aircraft was not equipped with an autopilot or flight director, requiring manual flight during the approach.
- The aircraft deviated from the runway centerline at approximately 400 feet altitude.
- The aircraft experienced a rapid roll and inverted upon impact with the runway surface.
- The investigation has not yet identified any mechanical failures in the airframe, systems, or powerplants.
- The aural warning heard during the final seconds of the recording is believed to potentially be the stall warning horn, though this remains unconfirmed.
Safety action
No specific safety recommendations were issued in this preliminary report, as the investigation into the causes of the loss of control and the regulatory oversight of the flight operations is ongoing.