Investigators identified Urubano Sandy, 26, of Honolulu, as the passenger in a Jeep Cherokee that flipped over a retaining wall on the H-1 Freeway's airport viaduct and fell 30 feet to the ground.

Police said the Jeep was headed east at about 7:20 a.m. yesterday when the driver apparently lost control, hit the concrete wall along the right shoulder and landed on a grassy traffic island at the intersection of Kamehameha Highway and Middle Street, just before the on-ramp to the H-1 Freeway westbound lanes.

Police said speeding and the consumption of alcohol probably were contributing factors in the crash. The driver was taken to The Queen's Medical Center and was listed in critical condition upon his arrival.

The Medical Examiner's office also identified Samson Aguiar, 26, of Kane'ohe, as the operator of a motorcycle who was killed about 2:15 p.m. yesterday when he crashed head-on into a pickup truck on Kaukonahua Road near Wahiawa.

Police traffic investigators said the 2004 Honda motorcycle was speeding toward the North Shore when the rider lost control, sending the motorcycle onto a grassy shoulder area on Kaukonahua and back onto the roadway. It crossed the center lined and collided with a 2004 Chevrolet pickup truck that was headed toward Wahiawa.