GAA16CA160

NTSB accident investigation · Robinson R44 · Oak Island, NC · March 23, 2016

Accident · Minor injuriesData collectionFinal report
Date
March 23, 2016, 11:00 local (15:00 UTC)
Place
Oak Island, NC
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N843JBRobinson R44
Defining event
Maneuvering-hover: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report June 1, 2016
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA Greensboro FSDO
FAA report
20160323024319A
Case key
92886

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The student pilot's failure to maintain a stabilized hover, resulting in a loss of control and an impact with terrain.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotRobinson Helicopter R44 II: 99 casesAll aircraft: 9,295 casesProbable cause
Rotorcraft flight controlAircraft › Aircraft propeller/rotor · Incorrect use/operationRobinson Helicopter R44 II: 1 caseAll aircraft: 9 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedRobinson Helicopter R44 II: 39 casesAll aircraft: 1,310 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The flight instructor reported that the student pilot was asked to conduct several solo "pickups and set downs" on a grass area at the airport. The flight instructor exited the helicopter and observed the student pilot pick the helicopter up to a hover and set the helicopter back on the ground without incident. During the second iteration, the flight instructor observed the helicopter achieve a hover at 5 to 8 feet above ground level for several seconds. She reported that the helicopter then slowly yawed to the right and continued turning to the right until it was 270 degrees from its original heading. The helicopter began to lose altitude, move forward, and the skids impacted the ground. She reported that the helicopter bounced back into the air after impacting the ground and rolled slightly to the left. The helicopter then abruptly rolled to the right, the nose came down, the main rotor blades impacted the ground, and the helicopter came to rest on its right side. After the impact, the flight instructor reported that she crawled inside of the cockpit to turn off the engine. The helicopter sustained substantial damage to the fuselage, main rotor system, tailboom, and horizontal stabilizer. The student pilot reported that he did not recall the accident sequence of events. The flight instructor reported that after the accident, while at the hospital with the student pilot, he reported to her that "I should have been able to control it [the helicopter]." The flight instructor verified that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. The Federal Aviation Administration (FAA) aviation safety inspector who responded to the accident site, reported that he did not notice any mechanical control issues with the helicopter. He also reported that the engine had no signs of any issues and that witnesses stated that after the helicopter impacted the ground, the engine was still running. As a safety recommendation, the flight instructor reported that her organization will increase the time allotment in their training syllabus to allow more emphasis to be placed on the importance of light control inputs and the catastrophic results that can occur from over controlling and abrupt inputs, particularly at a hover. The FAA has published the Helicopter Flying Handbook FAA-H-8083-21 (2012). This handbook discusses techniques for hovering and states in part: To maintain the helicopter in a stabilized hover, make small, smooth, coordinated corrections.

Factual narrative

The flight instructor reported that the student pilot was asked to conduct several solo "pickups and set downs" on a grass area at the airport. The flight instructor exited the helicopter and observed the student pilot pick the helicopter up to a hover and set the helicopter back on the ground without incident. During the second iteration, the flight instructor observed the helicopter achieve a hover at 5 to 8 feet above ground level for several seconds. She reported that the helicopter then slowly yawed to the right and continued turning to the right until it was 270 degrees from its original heading. The helicopter began to lose altitude, move forward, and the skids impacted the ground. She reported that the helicopter bounced back into the air after impacting the ground and rolled slightly to the left. The helicopter then abruptly rolled to the right, the nose came down, the main rotor blades impacted the ground, and the helicopter came to rest on its right side. After the impact, the flight instructor reported that she crawled inside of the cockpit to turn off the engine. The helicopter sustained substantial damage to the fuselage, main rotor system, tailboom, and horizontal stabilizer. The student pilot reported that he did not recall the accident sequence of events. The flight instructor reported that after the accident, while at the hospital with the student pilot, he reported to her that "I should have been able to control it [the helicopter]." The flight instructor verified that there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. The Federal Aviation Administration (FAA) aviation safety inspector who responded to the accident site, reported that he did not notice any mechanical control issues with the helicopter. He also reported that the engine had no signs of any issues and that witnesses stated that after the helicopter impacted the ground, the engine was still running. As a safety recommendation, the flight instructor reported that her organization will increase the time allotment in their training syllabus to allow more emphasis to be placed on the importance of light control inputs and the catastrophic results that can occur from over controlling and abrupt inputs, particularly at a hover. The FAA has published the Helicopter Flying Handbook FAA-H-8083-21 (2012). This handbook discusses techniques for hovering and states in part: To maintain the helicopter in a stabilized hover, make small, smooth, coordinated corrections.

Aircraft

Registration
N843JB
Reported as
Robinson R44 (II)
Category
Helicopter
Serial number
13865
Built
2015
Airframe hours
163
Engine
Lycoming IO-540-AE1A5, 245 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
High Tide Helicopters, LLC
Registered owner
Jaybird Air, LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · January 11, 2016
Departed
SUT · Oak Island, NC
Destination
SUT · Oak Island, NC
Airport
SUT · Cape Fear Rgnl Jetport/Howie F
Equipment
Electronic primary flight display, ADS-B

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Student pilot
Age
65
Injuries
Minor
Certificate
Student
Medical
Class 3, Without waivers/limitations
Seat
Right
Restraint
3-point
Flight hours
52 total · 40 in this make and model · 2 as pilot in command · 45 in the last 90 days · 10 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 11 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 55 °F
Altimeter
30.29 inHg
Observed at
KSUT

Docket · 4

The files NTSB released with the investigation on May 5, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.2 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.