Saturday, December 04, 2021

Collision with Object (non-CFIT): DHC-2-L-20 Beaver, N9279Z; accident occurred July 09, 2021 in Coffman Cove, Alaska

Aviation Accident Final Report - National Transportation Safety Board

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Juneau, Alaska

Investigation Docket - National Transportation Safety Board:
Snow Mountain Enterprises LLC

Southeast Aviation LLC

Location: Coffman Cove, Alaska
Accident Number: ANC21LA057
Date and Time: July 9, 2021, 06:40 Local 
Registration: N9279Z
Aircraft: DEHAVILLAND DHC-2-L-20 
Aircraft Damage: Substantial
Defining Event: Collision with terr/obj (non-CFIT)
Injuries: 1 None
Flight Conducted Under: Part 91: General aviation - Positioning


The pilot of the float-equipped airplane reported that while accelerating on the water for takeoff, he impacted a green channel buoy and nosed over, which resulted in substantial damage to the left wing, left lift strut and fuselage. The pilot reported that there were no preaccident mechanical malfunctions or anomalies with the airplane that would have precluded normal operation, and that the accident may have been prevented if he had taxied clear of the obstructions before initiating his takeoff.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot’s impact with a buoy on takeoff which resulted in a nose-over.


Personnel issues Monitoring environment - Pilot
Environmental issues Sign/marker - Effect on equipment

Factual Information

History of Flight

Takeoff Collision with terr/obj (non-CFIT) (Defining event)

Pilot Information

Certificate: Airline transport; Commercial 
Age: 64, Male
Airplane Rating(s): Single-engine land; Single-engine sea; Multi-engine land; Multiengine sea
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: 3-point
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed:
Medical Certification: Class 2 With waivers/limitations
Last FAA Medical Exam: April 6, 2021
Occupational Pilot: Yes 
Last Flight Review or Equivalent: May 12, 2021
Flight Time: 15526 hours (Total, all aircraft), 7962 hours (Total, this make and model), 15386 hours (Pilot In Command, all aircraft), 98 hours (Last 90 days, all aircraft), 48 hours (Last 30 days, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: DEHAVILLAND 
Registration: N9279Z
Model/Series: DHC-2-L-20 
Aircraft Category: Airplane
Year of Manufacture: 1952 
Amateur Built:
Airworthiness Certificate: Normal
Serial Number: 345
Landing Gear Type: Tailwheel; Float 
Seats: 8
Date/Type of Last Inspection:
Certified Max Gross Wt.:
Time Since Last Inspection: 
Engines: 1 Reciprocating
Airframe Total Time: 
Engine Manufacturer: P&W
ELT: C91A installed, not activated
Engine Model/Series: R-985 SERIES
Registered Owner: 
Rated Power: 450 Horsepower
Operating Certificate(s) Held: On-demand air taxi (135), Commercial air tour (136)

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual (VMC)
Condition of Light: Day
Observation Facility, Elevation: PAKW, 12 ft msl 
Distance from Accident Site: 27 Nautical Miles
Observation Time: 06:53 Local 
Direction from Accident Site: 197°
Lowest Cloud Condition: 
Visibility: 10 miles
Lowest Ceiling: Overcast / 2000 ft AGL
Visibility (RVR):
Wind Speed/Gusts: / 
Turbulence Type Forecast/Actual:  /
Wind Direction: 
Turbulence Severity Forecast/Actual:  /
Altimeter Setting: 30.12 inches Hg
Temperature/Dew Point: 13°C / 12°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Coffman Cove, AK
Type of Flight Plan Filed: VFR
Destination: Ketchikan , AK
Type of Clearance: None
Departure Time:
Type of Airspace: Class G

Airport Information

Runway Surface Type: Water
Airport Elevation: 0 ft msl 
Runway Surface Condition: Water-glassy
Runway Used: N/S
IFR Approach: None
Runway Length/Width: 5000 ft / 2000 ft
VFR Approach/Landing: None

Wreckage and Impact Information

Crew Injuries: 1 None 
Aircraft Damage: Substantial
Passenger Injuries:
Aircraft Fire: None
Ground Injuries: 
Aircraft Explosion: None
Total Injuries: 1 None
Latitude, Longitude: 56.008959,-132.84709

No comments:

Post a Comment