NTSB Releases Preliminary Report On Pima County Sheriff Helicopter Crash
While I know it is best to wait for the full report and all of the facts. It is still human nature to ask what went wrong. I am asking myself if this was a tail rotor strike.......
NTSB Identification: WPR11GA115
14 CFR Public Use
Accident occurred Monday, January 31, 2011 in Marana, AZ
Aircraft: MCDONNELL DOUGLAS HELI CO 369FF, registration: N530RL
Injuries: 1 Fatal, 2 Serious, 1 Minor.
This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed.
On January 31, 2011, about 1115 mountain standard time, a McDonnell-Douglas 369FF helicopter, N530RL, was substantially damaged during an attempted pinnacle landing on Waterman Peak near Marana, Arizona. The pilot received fatal injuries, two passengers received serious injuries, and one passenger received minor injuries. The public-use flight was operated by the Pima County Sheriff's Department (PCSD) in support of the Pima County Wireless Integrated Network (PCWIN) communications development project. Visual meteorological conditions prevailed, and no flight plan was filed for the flight.
The purpose of the flight was to enable PCWIN personnel to conduct a site survey for the planned installation of a communications-repeater tower. The helicopter departed Tucson International Airport (TUS), Tucson, Arizona, about 1050, with the PCSD pilot/deputy in the left front seat, two Pima County employees in the right front and rear seats, and a private contractor in the left rear seat. Initially, the flight was in communication with, and being tracked by, TUS local and TRACON air traffic control (ATC) facilities as it headed for the peak, located about 30 miles west-northwest of TUS.
The 1053 TUS recorded weather observation included winds from 300 degrees at 9 knots with gusts to 16 knots; visibility 10 miles; and a broken cloud layer at 7,000 feet.
The passengers reported that during the landing attempt, the helicopter either bounced or the pilot lifted off again, the nose pitched down, and then the helicopter began to spin to the right.
The helicopter tumbled and slid about 120 feet down the northeast face of the peak before it was halted by rocks and scrub vegetation.
A ground-based witness located about 1,000 feet west of and below the peak stated that the helicopter completed about four or five rotations before it disappeared from his view.
Federal Aviation Administration (FAA) records indicated that the pilot held a commercial pilot certificate with rotorcraft-helicopter and instrument-helicopter ratings, and a private pilot certificate with airplane single and multiengine land ratings. According to the pilot's personal flight log, he had approximately 11,500 total hours of flight experience, most of which was in helicopters. His first recorded flight in the accident helicopter make and model was in August 2008, and he had logged about 186 total hours in that equipment. In January 2011, excluding the accident flight, the pilot logged 6 flights, for a total of 7.5 hours, in the accident helicopter make and model. His most recent FAA second-class medical certificate was issued in February 2010. According to PCSD information, the pilot joined PCSD in November 2008, and had about 30 years experience flying helicopters for the Arizona Department of Public Safety and the Maricopa County Sheriff's Department.
The helicopter was manufactured in 1998, and was registered to Pima County in 2008. The helicopter's most recent annual inspection was completed in April 2010, and it had accumulated about 115 hours in service between that inspection and the accident. The helicopter was equipped with an Allison (Rolls-Royce) 250-C30 series turbine engine.
During the follow-up investigation, the engine was removed and prepared for a test-run. During the test run, the engine developed rated power, and engine performance exceeded minimum values for overhauled engines, and no anomalies were noted.