GAA19CA141

NTSB accident investigation · Robinson R22 · Clearwater, FL · February 19, 2019

Accident · No injuriesData collectionFinal report
Date
February 19, 2019, 17:00 local (22:00 UTC)
Place
Clearwater, FL
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N512GSRobinson R22
Defining event
Taxi-to runway: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report September 26, 2019
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20190219010379A
Case key
99001

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 sufficient altitude over uneven terrain during a hover taxi, which resulted in ground contact and a subsequent dynamic rollover.

Findings · 4

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: use of equip/systemPersonnel issues › Task performance · Instructor/check pilotRobinson Helicopter R22 BETA: 16 casesAll aircraft: 1,391 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedRobinson Helicopter R22 BETA: 25 casesAll aircraft: 1,310 casesProbable cause
Terrain: sloped/uneven terrainEnvironmental issues › Physical environment · Contributed to outcomeRobinson Helicopter R22 BETA: 4 casesAll aircraft: 270 cases

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

According to the flight instructor in the skid-equipped helicopter, he was going to demonstrate a maneuver to his airplane-rated student. The instructor reported that he air taxied the helicopter to the departure end of the runway. He then slowed down the helicopter, and while turning and hover taxiing over the grassy area between the taxiway and the runway, the right skid's toe contacted the uneven ground. The helicopter pivoted around the toe and rolled onto its side. The helicopter sustained substantial damage to the fuselage and rotor systems. The instructor reported that there were no preimpact mechanical failures or malfunctions with the helicopter that would have precluded normal operation.

Factual narrative

According to the flight instructor in the skid-equipped helicopter, he was going to demonstrate a maneuver to his airplane rated student. The instructor reported that he air taxied the helicopter to the departure end of the runway. He then slowed the helicopter down and while turning and hover taxiing over the grass area between the taxiway and the runway, the toe of the right skid contacted the uneven ground. The helicopter pivoted around the toe and rolled onto its side. The helicopter sustained substantial damage to the fuselage and rotor systems. The pilot reported that there were no preimpact mechanical failures or malfunctions with the helicopter that would have precluded normal operation.

Aircraft

Registration
N512GS
Reported as
Robinson R22 (BETA)
Category
Helicopter
Serial number
2836
Built
1998
Airframe hours
7,017.1
Engine
Lycoming O-360-J2A, 132 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Tampa Bay Aviation
Registered owner
Clearwater Helicopters Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 4, 2019
Departed
CLW · Clearwater, FL
Destination
CLW · Clearwater, FL
Airport
CLW · Clearwater Air Park, runway 16, 4,108 × 75 ft, asphalt

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
26
Injuries
None
Certificates
Commercial, Flight instructor
Instrument ratings
Helicopter
Medical
Class 2, Without waivers/limitations
Last flight review
November 21, 2017
Seat
Left
Restraint
3-point
Flight hours
897 total · 521 in this make and model · 789 as pilot in command · 108 in the last 90 days · 66 in the last 30 days · 4 in the last 24 hours
Role
Student pilot
Age
30
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
August 10, 2017
Seat
Right
Restraint
3-point
Flight hours
1,232 total · 21 in this make and model · 1,126 as pilot in command · 107 in the last 90 days · 60 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 7 knots
Visibility
10 statute miles
Lowest ceiling
5,500 ft broken
Temperature
81 °F, dew point 64 °F
Altimeter
30.07 inHg
Observed at
KPIE, 5 nm away

Docket · 3

The files NTSB released with the investigation on March 19, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.8 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.