ERA15CA079

NTSB accident investigation · Robinson Helicopter R66 · Henniker, NH · December 22, 2014

Accident · No injuriesData collectionFinal report
Date
December 22, 2014, 08:40 local (13:40 UTC)
Place
Henniker, NH
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N64HFRobinson Helicopter R66
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report April 7, 2015
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20141222021639A
Case key
90520

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 pilot's failure to maintain aircraft control while landing, which resulted in a collision with a snow bank. Contributing to the accident was ice that covered the landing surface.

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.

Performance/control parameters: yaw controlAircraft › Aircraft oper/perf/capability · Not specifiedRobinson Helicopter R66: 2 casesAll aircraft: 149 casesProbable cause
Runway/land/takeoff/taxi surface: snow/slush/ice covered surfaceEnvironmental issues › Physical environment · Effect on operationRobinson Helicopter R66: 1 caseAll aircraft: 219 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 pilot was landing the helicopter at a private heliport. The outside air temperature was about -1 degree Celsius (C). After a normal touchdown, the helicopter began to spin and the tail rotor struck a snow bank, which resulted in substantial damage to the tail rotor and lower vertical stabilizer. After exiting the helicopter, the pilot noted that the ground was coated with "black ice." The pilot reported that he did not experience any malfunctions or failures of the helicopter that would have precluded normal operation. He further reported about 635 hours of rotorcraft flight experience, which included 85 hours in the same make and model as the accident helicopter.

Factual narrative

The pilot was landing the helicopter at a private heliport. The outside air temperature was about -1 degree Celsius (C). After a normal touchdown, the helicopter began to spin and the tail rotor struck a snow bank, which resulted in substantial damage to the tail rotor and lower vertical stabilizer. After exiting the helicopter, the pilot noted that the ground was coated with "black ice." The pilot reported that he did not experience any malfunctions or failures of the helicopter that would have precluded normal operation. He further reported about 635 hours of rotorcraft flight experience, which included 85 hours in the same make and model as the accident helicopter.

Aircraft

Registration
N64HF
Reported as
Robinson Helicopter R66
Category
Helicopter
Serial number
0268
Built
2013
Airframe hours
79
Engine
Rolls Royce 250-C300/A1, 285 horsepower, turbo shaft
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Hillsboro Ford Inc
Registered owner
Hillsboro Ford Inc
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 1, 2014
Departed
LCI · Laconia, NH
Destination
Henniker, NH

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
Pilot
Age
62
Injuries
None
Certificate
Private
Medical
Class 3, With waivers/limitations
Last flight review
September 27, 2013
Seat
Right
Restraint
4-point
Flight hours
634 total · 85 in this make and model · 634 as pilot in command · 2 in the last 90 days · 2 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
50° at 5 knots
Visibility
10 statute miles
Lowest ceiling
4,200 ft overcast
Temperature
30 °F, dew point 25 °F
Altimeter
30.36 inHg
Observed at
LCI, 26 nm away

Docket · 4

The files NTSB released with the investigation on April 2, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.9 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.