GAA18CA070

NTSB accident investigation · Eurocopter AS 350 · Santa Rosa, AZ · December 6, 2017

Accident · No injuriesData collectionFinal report
Date
December 6, 2017, 09:00 local (16:00 UTC)
Place
Santa Rosa, AZ
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N790AMEurocopter AS 350
Defining event
Landing: Hard landing
Weather
Visual (VMC) · Day
Status
Completed · report March 14, 2018
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
Case key
96434

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

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Probable cause

The pilot’s improper landing flare, which resulted in a hard landing.

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.

Performance/control parameters: landing flareAircraft › Aircraft oper/perf/capability · Not attained/maintainedEurocopter AS 350 B3: 3 casesAll aircraft: 1,285 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotEurocopter AS 350 B3: 14 casesAll aircraft: 9,295 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 reported that, while landing off airport, the helicopter landed slightly harder than normal. The pilot flew the helicopter back to the airport without further incident. A postaccident examination revealed that the helicopter had sustained substantial damage to the tailboom. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.

Factual narrative

The pilot reported that, while landing off-airport, the helicopter landed slightly harder than normal. The helicopter was flown back to the airport without further incident. A post-accident examination revealed the helicopter had sustained substantial damage to the tail-boom. The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.

Aircraft

Registration
N790AM
Reported as
Eurocopter AS 350
Category
Helicopter
Serial number
4298
Built
2007
Engine
turbo shaft
Damage
Substantial damage
Flight
Public aircraft · Public use
Operator
US Department Of Homeland Security
Registered owner
US Department Of Homeland Security
Airworthiness certificate
Standard, Normal
Departed
DMA · Tucson, AZ
Destination
DMA · Tucson, AZ
Flight plan
VFR/IFR
Equipment
Unknown

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
45
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, Without waivers/limitations
Seat
Right
Flight hours
6,000 total · 1,500 in this make and model · 3,000 as pilot in command · 100 in the last 90 days · 25 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 7 knots
Visibility
10 statute miles
Lowest ceiling
8,500 ft overcast
Temperature
54 °F, dew point 37 °F
Altimeter
30.13 inHg
Observed at
KDMA, 66 nm away