Grand Canyon - Rialto

On May 28, 2003 at 05:20 PM, Grand Canyon - Rialto experienced a crash involving Rockwell Aero Commander 500, operated by Joseph L. Ciabattoni, with the event recorded near Grand Canyon-National Park Arizona.

The flight was categorized as private and the reported phase was takeoff (climb) at a airport (less than 10 km from airport) crash site.

4 people were known to be on board, 0 fatalities were recorded, 4 survivors were identified or estimated. This corresponds to an estimated fatality rate of 0.0%.

Crew on board: 1, crew fatalities: 0, passengers on board: 3, passenger fatalities: 0, other fatalities: 0.

The listed crash cause is weather. The airplane did not gain altitude after takeoff and collided with trees and terrain off the departure end of the runway. Prior to takeoff the pilot received a computerized weather briefing that showed generally good conditions. The tower controller cleared the pilot to taxi to the active runway (runway 21) and issued winds, which were 300 degrees at 10 knots, a direct crosswind. During the initial climb after liftoff, the pilot saw that the airplane had stopped climbing and he asked for and received the wind information again. With the airplane not climbing and headed directly for some trees, the pilot maneuvered the airplane towards a clearing but the left wing hit a tree and the airplane descended into the ground. The pilot reported no mechanical problems with the airframe and engines. The density altitude was calculated to be 9,481 feet. The aircraft's gross weight at the time of takeoff was 6,000 pounds. Review of the Airplane Flight Manual climb performance charts for that aircraft weight at the pressure altitude and reported outside air temperature discloses that the airplane should have had a positive rate of climb of about 1,100 feet per minute. The airport was equipped with a wind information recording system, which had four sensors. Three sensors recorded wind information at ground level only. They were placed, one each, at the approach, middle, and departure ends of the runway. Wind data was recorded every 10 seconds. The system does not have the capability to predict or warn of wind shear events. During the aircraft's departure, the approach end sensor recorded winds at 068 degrees at 1 knot; the middle sensor recorded winds at 293 degrees at 5 knots; and the departure sensor recorded winds at 302 degrees at 2 knots. At the next data sampling (10 seconds later), the departure end sensor recorded a wind increase of 10 knots, and the approach end recorded a wind shift from a headwind to a tailwind at 10 knots. A full analysis of the weather conditions indicated that due to developing convection over the runway the airplane likely encountered a wind shear (increasing tailwind) event that seriously degraded the takeoff and climb performance.

Aircraft reference details include registration N64TS, MSN 500-1442-156, year of manufacture 1964.

Geospatial coordinates for this crash are approximately 36.3079°, -112.2929°.