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NTSB Final Report: Cypress Island, WA

 

Location:

Cypress Island, WA

Accident Number:

GAA19CA509

Date & Time:

08/20/2019, 1930 PDT

Registration:

N7186P

Aircraft:

Robinson R44

Aircraft Damage:

Substantial

Defining Event:

Low altitude operation/event

Injuries:

1 Serious, 2 Minor

Flight Conducted Under:

Part 91: General Aviation - Business

Analysis 

The pilot reported that he began a right orbit off the shore of an island about 20 ft above the water. During the maneuver, the helicopter drifted and struck a tree leaning over the water. The helicopter subsequently lost altitude, impacted the water, and came to rest on its right side. The helicopter sustained substantial damage to the main rotor blades and fuselage. The pilot reported that there were no preaccident malfunctions or failures with the helicopter that would have precluded normal operation.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot's failure to maintain adequate clearance from a tree while maneuvering at a low altitude.

Findings

Aircraft

Altitude - Not attained/maintained (Cause)

Personnel issues

Monitoring environment - Pilot (Cause)

Factual Information

History of Flight

Maneuvering-low-alt flying

Low altitude operation/event (Defining event)

Collision with terr/obj (non-CFIT)

 

 

Pilot Information

Certificate:

Airline Transport; Flight Instructor; Commercial

Age:

73, Male

Airplane Rating(s):

Multi-engine Land; Multi-engine Sea; Single-engine Land; Single-engine Sea

Seat Occupied:

Right

Other Aircraft Rating(s):

Helicopter

Restraint Used:

 

Instrument Rating(s):

Airplane; Helicopter

Second Pilot Present:

No

Instructor Rating(s):

Airplane Multi-engine; Airplane Single-engine; Helicopter; Instrument Airplane

Toxicology Performed:

No

Medical Certification:

Class 1 With Waivers/Limitations

Last FAA Medical Exam:

04/22/2019

Occupational Pilot:

Yes

Last Flight Review or Equivalent:

 

Flight Time:

(Estimated) 11000 hours (Total, all aircraft), 1500 hours (Total, this make and model)

 

 

Aircraft and Owner/Operator Information

Aircraft Make:

Robinson

Registration:

N7186P

Model/Series:

R44 Undesignat

Aircraft Category:

Helicopter

Year of Manufacture:

1999

Amateur Built:

No

Airworthiness Certificate:

Normal

Serial Number:

0611

Landing Gear Type:

Skid;

Seats:

4

Date/Type of Last Inspection:

 Unknown

Certified Max Gross Wt.:

 

Time Since Last Inspection:

 

Engines:

1 Reciprocating

Airframe Total Time:

 

Engine Manufacturer:

Lycoming

ELT:

Installed

Engine Model/Series:

O-540-F1B5

Registered Owner:

Peregrine Air LLC

Rated Power:

235 hp

Operator:

Peregrine Air LLC

Operating Certificate(s) Held:

None

 

Meteorological Information and Flight Plan

Conditions at Accident Site:

Visual Conditions

Condition of Light:

Day

Observation Facility, Elevation:

KORS, 31 ft msl

Distance from Accident Site:

10 Nautical Miles

Observation Time:

0235 UTC

Direction from Accident Site:

308°

Lowest Cloud Condition:

Clear

Visibility

10 Miles

Lowest Ceiling:

None

Visibility (RVR):

 

Wind Speed/Gusts:

4 knots /

Turbulence Type Forecast/Actual:

/

Wind Direction:

160°

Turbulence Severity Forecast/Actual:

/

Altimeter Setting:

29.86 inches Hg

Temperature/Dew Point:

20°C / 13°C

Precipitation and Obscuration:

No Obscuration; No Precipitation

Departure Point:

 

Type of Flight Plan Filed:

VFR

Destination:

 

Type of Clearance:

None

Departure Time:

 

Type of Airspace:

Class G

 

 

Wreckage and Impact Information

Crew Injuries:

1 Minor

Aircraft Damage:

Substantial

Passenger Injuries:

1 Serious, 1 Minor

Aircraft Fire:

None

Ground Injuries:

N/A

Aircraft Explosion:

None

Total Injuries:

1 Serious, 2 Minor

Latitude, Longitude:

48.608333, -122.716111 (est)

 

Administrative Information

Investigator In Charge (IIC):

Eleazar Nepomuceno

Report Date:

07/27/2020

Additional Participating Persons:

 

Publish Date:

07/27/2020

Note:

This accident report documents the factual circumstances of this accident as described to the NTSB.

Investigation Docket:

http://dms.ntsb.gov/pubdms/search/dockList.cfm?mKey=100133





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