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NTSB Final Report Released: Raleigh, NC


Location:

Raleigh, NC

Accident Number:

ERA18LA170

Date & Time:

06/19/20181406 EDT

Registration:

N303HP

Aircraft:

BELL OH 58A

Aircraft Damage:

Substantial

Defining Event:

Dynamic rollover

Injuries:

2 Minor

Flight Conducted Under:

Public Aircraft

Analysis
In preparation for a local flight, the commercial pilot moved the helicopter from the hangar to the helipad on an electric transporter that was attached to the helicopter skids. During the pilot's preflight preparation, shortly after he had unhooked the left skid from the transporter, the passenger interrupted him to ask if the flight controls could be removed from the copilot's side. After removing the controls, the pilot continued with his preflight inspection; however, he forgot to unhook the right skid from the transporter. Subsequently, during the takeoff, the helicopter rolled right until the main rotor blades struck the ground. The pilot's failure to unhook the transporter from the right skid led to the subsequent dynamic rollover.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The pilot's inadequate preflight inspection, during which he failed to detach ground handling equipment from the helicopter before initiating the takeoff, which resulted in the subsequent dynamic rollover.

Findings

Aircraft

Lateral/bank control - Not attained/maintained (Cause)

Personnel issues

Preflight inspection - Pilot (Cause)

Aircraft control - Pilot (Cause)

Lack of action - Pilot (Cause)


Factual Information
On June 19, 2018, about 1406 eastern daylight time, a Bell OH-58A, N303HP, operated by the North Carolina State Highway Patrol, was substantially damaged during takeoff at the Garner Road Heliport (3NC2), Raleigh, North Carolina. The commercial pilot and passenger sustained minor injuries. Day visual meteorological conditions prevailed at the time, and no flight plan was filed for the local public use flight.

According to the pilot, he moved the helicopter from the hangar to the helipad using an electric/hydraulic transporter attached to the helicopter skids. During his preflight preparation, as he unhooked the transporter clamp from the left skid, the passenger, seated in the left front co-pilot seat, inquired about removing the controls from the co-pilot's side of the helicopter. The pilot had not intended to remove them, though he decided to do so after the passenger's inquiry. After removing the controls, he continued with the preflight inspection; however, he reported that he forgot to unhook the transporter from the right skid. Subsequently during the takeoff, the helicopter rolled to the right until the main rotor blades struck the ground.

The pilot held a commercial pilot certificate with ratings for rotorcraft-helicopter and instrument helicopter. He held a private pilot certificate with a rating for airplane-single engine land. His most recent Federal Aviation Administration (FAA) second-class medical certificate was issued March 26, 2018, at which time he reported 882 total hours of flight experience. He reported a total of 732 hours in make and model of the accident helicopter.

The helicopter was manufactured in 1970 by Bell Helicopter. It was equipped with a Rolls Royce (Allison) T63-A-720, 317-shaft horsepower engine. The helicopter's airframe and engine had accrued 9,093 and 3,959 hours total time, respectively. A 100-hour inspection was completed on May 24, 2018, and the engine accrued 19.5 hours since that inspection. The engine had accumulated 2,184 hours since overhaul.

The helicopter was examined by an FAA inspector and all major components were accounted for at the scene. The helicopter came to rest on its left side, partially inverted. Examination revealed substantial damage to the fuselage, tail boom, and main rotor blades. The pilot reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Review of the operator's standard operating procedures indicated that single crewmember operations could be conducted with passengers aboard if the mission dictated such a crew and a first line supervisor authorized the single crew flight. Written procedures also required that "aircrews will assist each other . . . to assure a thorough pre-flight inspection…" and that "the Pilot and Co-Pilot will be aware and avoid all potential distractions and/or interruptions during their pre-flight activities." On the day of the accident, the helicopter was weight-limited with a passenger on board and therefore the flight was authorized to operate with a single pilot rather than the standard two-pilot crew.



 


Administrative Information

Investigator In Charge (IIC):

Douglass P Brazy

Adopted Date:

02/05/2019

Additional Participating Persons:

Dan Kelly; FAA/FSDO; Greensboro, NC

Publish Date:

02/05/2019

Note:

The NTSB did not travel to the scene of this accident.

Investigation Docket:

http://dms.ntsb.gov/pubdms/search/dockList.cfm?mKey=97532

History of Flight

Prior to flight

Ground handling event

Takeoff

Dynamic rollover (Defining event)

 

 

Pilot Information

Certificate:

Commercial

Age:

45, Male

Airplane Rating(s):

Single-engine Land

Seat Occupied:

Right

Other Aircraft Rating(s):

Helicopter

Restraint Used:

4-point

Instrument Rating(s):

Helicopter

Second Pilot Present:

No

Instructor Rating(s):

None

Toxicology Performed:

No

Medical Certification:

Class 2 With Waivers/Limitations

Last FAA Medical Exam:

03/26/2018

Occupational Pilot:

Yes

Last Flight Review or Equivalent:

02/08/2018

Flight Time:

1007 hours (Total, all aircraft), 732 hours (Total, this make and model), 712 hours (Pilot In Command, all aircraft), 55 hours (Last 90 days, all aircraft), 22 hours (Last 30 days, all aircraft)

 

 

Aircraft and Owner/Operator Information

Aircraft Make:

BELL

Registration:

N303HP

Model/Series:

OH 58A NO SERIES

Aircraft Category:

Helicopter

Year of Manufacture:

1970

Amateur Built:

No

Airworthiness Certificate:

Restricted

Serial Number:

70-15384

Landing Gear Type:

High Skid

Seats:

4

Date/Type of Last Inspection:

05/24/2018, 100 Hour

Certified Max Gross Wt.:

3200 lbs

Time Since Last Inspection:

19 Hours

Engines:

1 Turbo Shaft

Airframe Total Time:

9094 Hours at time of accident

Engine Manufacturer:

Allison

ELT:

C126 installed, not activated

Engine Model/Series:

T63-A-700

Registered Owner:

NORTH CAROLINA STATE HIGHWAY PATROL

Rated Power:

317 hp

Operator:

NORTH CAROLINA STATE HIGHWAY PATROL

Operating Certificate(s) Held:

None

 

Meteorological Information and Flight Plan

Conditions at Accident Site:

Visual Conditions

Condition of Light:

Day

Observation Facility, Elevation:

RDU, 416 ft msl

Distance from Accident Site:

12 Nautical Miles

Observation Time:

1351 EDT

Direction from Accident Site:

322°

Lowest Cloud Condition:

Few / 5000 ft agl

Visibility

10 Miles

Lowest Ceiling:

 

Visibility (RVR):

 

Wind Speed/Gusts:

5 knots /

Turbulence Type Forecast/Actual:

Unknown / None

Wind Direction:

Variable

Turbulence Severity Forecast/Actual:

N/A / N/A

Altimeter Setting:

29.92 inches Hg

Temperature/Dew Point:

34°C / 23°C

Precipitation and Obscuration:

No Obscuration; No Precipitation

Departure Point:

Raleigh, NC (3NC2)

Type of Flight Plan Filed:

None

Destination:

Raleigh, NC (3NC2)

Type of Clearance:

None

Departure Time:

1404 EDT

Type of Airspace:

Class G

 

Airport Information

Airport:

GARNER ROAD HELIPORT (3NC2)

Runway Surface Type:

Concrete

Airport Elevation:

375 ft

Runway Surface Condition:

Dry

Runway Used:

H1

IFR Approach:

None

Runway Length/Width:

100 ft / 50 ft

VFR Approach/Landing:

None

 

Wreckage and Impact Information

Crew Injuries:

1 Minor

Aircraft Damage:

Substantial

Passenger Injuries:

1 Minor

Aircraft Fire:

None

Ground Injuries:

N/A

Aircraft Explosion:

None

Total Injuries:

2 Minor

Latitude, Longitude:

35.731944, -78.628611 (est)

 





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Created 192 days ago
by jhadmin

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