The Islander aircraft experienced a significant performance issue during takeoff from Mount Hagen’s runway 30, resulting in a crash-landing. The aircraft’s takeoff roll acceleration was sluggish, attributed to altitude and density. The plane climbed slowly to approximately 100 feet above ground level, and lost engine power, leading to a crash-landing. The aircraft struck the ground heavily, bouncing and skidding approximately 80 meters before the nose bulkhead came to rest against a creek bank. The probable cause was a combination of factors including potentially insufficient load, a mixture excessively rich, carburetor heat causing the mixture to overheat, and control settings not optimized for maximum RPM.The Islander aircraft experienced a significant performance issue during takeoff from Mount Hagen’s runway 30, resulting in a crash-landing. The aircraft’s takeoff roll acceleration was sluggish, attributed to altitude and density. The plane climbed slowly to approximately 100 feet above ground level, and lost engine power, leading to a crash-landing. The aircraft struck the ground heavily, bouncing and skidding approximately 80 meters before the nose bulkhead came to rest against a creek bank. The probable cause was a combination of factors including potentially insufficient load, a mixture excessively rich, carburetor heat causing the mixture to overheat, and control settings not optimized for maximum RPM.