Aerospatiale AS350BA
GrandCanyonWest, AZ, USA · 2003-09-20·N270SH
What happened
NTSB summary, verbatimThe Safety Board's full report is available at http://www.ntsb.gov/publictn/publictn.htm. The Aircraft Accident Brief number is NTSB/AAB-07/03. On September 20, 2003, about 1238 mountain standard time, an Aerospatiale AS350BA helicopter, N270SH, operated by Sundance Helicopters, Inc., crashed into a canyon wall while maneuvering through Descent Canyon, about 1.5 nautical miles east of Grand Canyon West Airport (1G4) in Arizona. The pilot and all six passengers on board were killed, and the helicopter was destroyed by impact forces and postcrash fire. The air tour sightseeing flight was operated under the provisions of 14 Code of Federal Regulations Part 135. Visual meteorological conditions prevailed for the flight, which was operated under visual flight rules on a company flight plan. The helicopter was transporting passengers from a helipad at 1G4 (helipad elevation 4,775 feet mean sea level [msl]) near the upper rim of the Grand Canyon to a helipad designated "the Beach" (elevation 1,300 msl) located next to the Colorado River at the floor of the Grand Canyon.
Photographs
24the aircraft, and what the investigators foundPhotographs are NTSB docket attachments — works of the US government, in the public domain. Captions are the Board’s own.
Probable cause
the Board's determinationThe pilot's disregard of safe flying procedures and misjudgment of the helicopter's proximity to terrain, which resulted in an in-flight collision with a canyon wall. Contributing to the accident was the failure of Sundance Helicopters and the Federal Aviation Administration to provide adequate surveillance of Sundance's air tour operations in Descent Canyon.
Safety recommendations
7 issuedwhat changed because of this accidentTO THE FEDERAL AVIATION ADMINISTRATION: Require periodic en route surveillance of all repetitively flown commercial air tour routes in the Grand Canyon area, including those routes located outside of the Special Federal Aviation Regulations No. 50-2 airspace.
TO THE FEDERAL AVIATION ADMINISTRATION: Require all commercial air tour operators to maintain records of all safety-related complaints and complaint correspondence regarding pilot performance, document what actions the company took to address each complaint, and make the records available to the principal operations inspector for periodic review.
TO THE FEDERAL AVIATION ADMINISTRATION: Require all commercial air tour operators to maintain the names and contact information of all passengers, along with the respective flight’s identification number, for at least 30 days following the flights.
TO THE FEDERAL AVIATION ADMINISTRATION: Encourage commercial air tour operators to establish a structured flight operations monitoring program that incorporates routine reviews of all available sources of information to ensure that pilots are conducting flights in accordance with company operating practices.
TO TOUR OPERATORS PROGRAM OF SAFETY: Expand the safety audit program to include a review of records of all safety-related complaints and complaint correspondence regarding pilot performance.
TO TOUR OPERATORS PROGRAM OF SAFETY: Expand the safety audit program to include en route surveillance of all repetitively flown commercial air tour routes in the Grand Canyon area.
TO TOUR OPERATORS PROGRAM OF SAFETY: Revise the safety audit program guidance materials to include a clear definition of air tour flight to ensure that auditors and members effectively implement en route surveillance of all air tour flight routes.
NTSB analysis
from the final reportThe Safety Board's full report is available at http://www.ntsb.gov/publictn/publictn.htm. The Aircraft Accident Brief number is NTSB/AAB-07/03. On September 20, 2003, about 1238 mountain standard time, an Aerospatiale AS350BA helicopter, N270SH, operated by Sundance Helicopters, Inc., crashed into a canyon wall while maneuvering through Descent Canyon, about 1.5 nautical miles east of Grand Canyon West Airport (1G4) in Arizona. The pilot and all six passengers on board were killed, and the helicopter was destroyed by impact forces and postcrash fire. The air tour sightseeing flight was operated under the provisions of 14 Code of Federal Regulations Part 135. Visual meteorological conditions prevailed for the flight, which was operated under visual flight rules on a company flight plan. The helicopter was transporting passengers from a helipad at 1G4 (helipad elevation 4,775 feet mean sea level [msl]) near the upper rim of the Grand Canyon to a helipad designated "the Beach" (elevation 1,300 msl) located next to the Colorado River at the floor of the Grand Canyon.