ERA21LA046

NTSB accident investigation · Robinson R44 · Austell, GA · November 18, 2020

Accident · No injuriesClass 4 · LimitedFinal report
Date
November 18, 2020, 12:30 local (17:30 UTC)
Place
Austell, GA · Field
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N442JPRobinson R44
Defining event
Maneuvering-hover: Dynamic rollover
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Eastern Region Aviation
Parties
FAA/ FSDO
FAA report
20201118022319A
Case key
102310

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 flight instructor’s failure to maintain adequate clearance above the gravel surface in a hover, which resulted in a dynamic rollover.

Findings · 2

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 · Instructor/check pilotRobinson Helicopter R44 II: 99 casesAll aircraft: 9,295 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 and student pilot were practicing approaches off-airport in the helicopter, and the flight instructor was demonstrating a slope landing. The flight instructor described that while in the hover, the helicopter suddenly pitched up 10-20°, followed by a pitch down of a like amount. The main rotor subsequently impacted the ground and the helicopter rolled over onto its left side, which resulted in substantial damage to the tail boom, main rotor, and fuselage. The flight instructor reported that there no preaccident mechanical malfunctions with the helicopter that would have precluded normal operation. Photographs of the accident site showed that the surface the hover was being performed over was an open area of uneven gravel. In a statement to a law enforcement officer who responded to the accident, the flight instructor described that the helicopter’s skid had contacted the gravel and the helicopter then flipped over. Given this information, it is likely that during the hover, the helicopter inadvertently contacted the gravel surface, which initiated a dynamic rollover event from which the flight instructor could not recover.

Aircraft

Registration
N442JP
Reported as
Robinson R44 (II)
Category
Helicopter
Serial number
11960
Built
2007
Airframe hours
1,977.9
Engine
Lycoming IO-540-AE1A5, 205 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Atlanta Helicopters
Registered owner
Atlanta Helicopters LLC
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · November 17, 2020
Departed
PUJ · Atlanta, GA
Destination
PDK · Atlanta, GA
Airport
None
Equipment
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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
57
Injuries
None
Certificates
Flight instructor, Commercial, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
June 1, 2020
Seat
Left
Flight hours
21,200 total · 250 as pilot in command · 12 in the last 30 days
Role
Student pilot
Injuries
None
Seat
Right

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 21 °F
Altimeter
30.51 inHg
Observed at
FTY, 15 nm away

Docket · 4

The files NTSB released with the investigation on June 24, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.0 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.