# Accident 20140725016512A: Dehavilland DHC-6-300, Boulder City, NV, July 25, 2014 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: July 25, 2014, 16:43 local time - Place: Boulder City, NV - Damage: Substantial damage - Collision: Collision on the ground - Phase of flight: Taxi - Operating rules: Air taxi and commuter (Part 135) - Operator: GCNA - Location: 35.9475° N, 114.8550° W: From the FAA - Nearby events: https://openairdocs.org/map.md?lat=35.9475&lon=-114.8550&mi=10 - Aircraft: N190GC, registered now (https://openairdocs.org/aircraft/N190GC) (OpenAirDocs) - Registry model: Dehavilland DHC-6-300 (registry code 2802630, https://openairdocs.org/model/dehavilland-dhc-6-300) (OpenAirDocs) - Registry engine: Pratt & Whitney Canada PT6A-27 series (registry code 52247, https://openairdocs.org/engine/pratt-whitney-canada-pt6a-27-series) (OpenAirDocs) - Reported make and model: DEHAVILLAND DHC-6-300 - Reported engine: P&W CANADA PT6A-27 - People aboard: 2 - Fatal injuries: 0 - Other injuries: 0 - Pilot certificates: Airline transport, flight instructor - Pilot flight hours: 9,733 total, 7,228 in this make and model, 127 in the last 90 days - NTSB investigation: [NTSB WPR14LA313](https://openairdocs.org/ntsb/WPR14LA313) (OpenAirDocs) - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/20140725016512A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. ON 07/25/14 AT APPROXIMATELY 1643 PDT, AN AMERICAN EUROCOPTER AS-350 B4 EC-130 HELICOPTER WAS STRUCK FROM BEHIND BY A DEHAVILLAND DHC-6 TWIN OTTER AIRPLANE AT THE BOULDER CITY AIRPORT IN BOULDER CITY, NEVADA. BOTH AIRCRAFT WERE OPERATING UNDER THE PROVISIONS OF 14 CODE OF FEDERAL REGULATIONS (CFR) PART 135. THE BOULDER CITY AIRPORT IS AN UNCONTROLLED AIRPORT UTILIZING COMMON TRAFFIC ADVISORY FREQUENCY COMMUNICATIONS. AT THE TIME OF THE EVENT, THE HELICOPTER WAS ON A FINAL APPROACH, IN A WESTERLY DIRECTION, TO AN ESTABLISHED HELICOPTER PAD, WHICH IS ADJACENT TO TAXIWAY ?D?. THE HELICOPTER?S FLIGHT PATH WAS PARALLEL TO TAXIWAY ?D?. THE AIRPLANE WAS TRAVELING WESTBOUND ON TAXIWAY ?D? WHEN THE LEADING EDGE OF THE VERTICAL STABILIZER OF THE AIRPLANE STRUCK THE RIGHT REAR PORTION OF THE HELICOPTER?S HORIZONTAL STABILIZER, ADJACENT TO THE TAIL BOOM OF THE HELICOPTER. THE HELICOPTER SUSTAINED SUBSTANTIAL DAMAGE TO THE STABILIZER, TAILBOOM AND TO THE SURFACE OF ONE MAIN ROTOR BLADE, WHICH APPEARED TO HAVE STRUCK THE ANTI-COLLISION LIGHT OF THE AIRPLANE. NONE OF THE OCCUPANTS OF EITHER AIRCRAFT WERE INJURED AND THE PILOT OF THE HELICOPTER WAS ABLE TO LAND WITHOUT ANY FURTHER EVENTS. THE PILOT OF THE HELICOPTER LATER REPORTED HAVING SEEN THE AIRPLANE SITTING AT THE EAST PART OF THE PARKING RAMP, FACING SOUTH. THE PILOT OF THE HELICOPTER THOUGHT THAT THE AIRPLANE WAS GOING TO BE TAXIING TO THE EAST FOR DEPARTURE FROM RUNWAY 27 LEFT. THE PILOT OF THE AIRPLANE REPORTED THAT HE HAD NOT SEEN THE HELICOPTER AT ANY TIME WHILE PREPARING TO TAXI OR WHILE TAXIING. HE REPORTED THAT HIS FIRST OFFICER HAD ORIGINALLY BROADCAST THEIR INTENTION TO TAXI TO THE EAST AND TO DEPART FROM RUNWAY 27 LEFT, THOUGH THEY HAD CHANGED THEIR MIND AFTER LEAVING THE PARKING RAMP, DUE TO SEEING THE WIND SOCK. HE STATED THAT THEY HAD BROADCAST THEIR CHANGE OF PLANS TO INDICATE THAT THEY WOULD BE TAXIING ALONG TAXIWAY ?D? FOR DEPARTURE FROM RUNWAY 15. ## Other aircraft in the event - N152GC, Eurocopter EC 130 B4: no report for this aircraft; [N152GC](https://openairdocs.org/aircraft/N152GC) is registered now ## The NTSB's investigation of this event (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB WPR14LA313](https://openairdocs.org/ntsb/WPR14LA313), Jul 25, 2014: Dehavilland DHC 6 300 (N190GC), Boulder City, NV, minor damage. Probable cause: The airplane flight crew’s failure to exercise the necessary vigilance and precautions and yield the right of way to the landing helicopter, which resulted in the airplane colliding with the… ## Other reports on N190GC (1) Matched to the same aircraft by N-number and date. - [Incident 20260430009649I](https://openairdocs.org/incident/20260430009649I), Apr 30, 2026: Dehavilland DHC-6-300 (N190GC), Tusayan, AZ, No damage. On April 30, 2026, at 2142Z (14:42 MST local), a de-havilland DHC-6-300, was involved in a runway excursion event at Grand Canyon National park airport (kgcn),… From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.