What happened
On 5 October 2020, a Viking Air DHC-6-300 floatplane, registration 8Q-TMF, operated by Trans Maldivian Airways, was completing a flight from Vommuli water aerodrome to Velana International Airport. The aircraft was carrying two pilots, one cabin crew, and four passengers under Visual Flight Rules.
As the aircraft approached the 'North Right' landing area in the northeast lagoon, it encountered light rain and westerly winds of approximately 20 knots. While the crew initially considered the approach stable and smooth, the aircraft experienced a sudden and rapid roll to the right immediately after touchdown. The right wing dipped into the water, causing the aircraft to swerve and eventually settle upright on its floats. The incident resulted in minor injuries to one flight crew member and the cabin crew, though all passengers remained uninjured.
The investigation
The AICC investigation focused on the flight operations and the environmental conditions at the time of the accident. Investigators examined the aircraft's maintenance history and found no mechanical defects or system malfunctions. The investigation also reviewed the pilot's recent flying experience and the impact of the COVID-19 pandemic on flight activity.
Data showed that while the pilot-in-command was highly experienced in land-based aircraft, he had recently transitioned back to floatplane operations. The investigation noted that the pilot had experienced a period of reduced flying activity due to pandemic-related lockdowns and had required more training time than usual to be released for line flying.
Findings
- The primary cause of the accident was a loss of control during the landing phase.
- The aircraft was subjected to varying crosswind conditions that exceeded the demonstrated maximum crosswind capability for the type.
- The pilot-in-command had a lack of recent practice and experience specifically regarding the unique motor skills and aircraft attitude required for floatplane landings, following a period of inactivity.
Safety action
- The AICC recommended that all operators review flight training requirements for crews transitioning from wheeled aircraft to floatplanes, with a specific focus on landing techniques and maintaining proper aircraft orientation.