CEN21LA124

NTSB accident investigation · Hiller UH12C · Lafayette, IN · January 12, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
January 12, 2021, 16:15 local (21:15 UTC)
Place
Lafayette, IN
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N552DRHiller UH12C
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
Central Region
Parties
Federal Aviation Administration - Indianapolis FSDO
FAA report
20210112000479A
Case key
102612

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 control of the helicopter shortly after liftoff into a hover, which resulted in a dynamic rollover when the left landing skid contacted the ground.

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: lateral/bank controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedHiller - World Helicopters UH-12C: 1 caseAll aircraft: 390 casesProbable cause
Performance/control parameters: pitch controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedHiller - World Helicopters UH-12C: 1 caseAll aircraft: 526 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 stated that shortly after liftoff, the helicopter drifted left, and the left landing skid contacted the ground, which caused a dynamic rollover onto the helicopter’s left side. The helicopter sustained substantial damage to the main rotor system, transmission structural support, and the tail rotor drive shaft. The pilot stated that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation. Additionally, the pilot stated that he had not flown the helicopter during the previous 2 months, and that the accident might have been prevented had he flown the helicopter more frequently.

Aircraft

Registration
N552DR
Reported as
Hiller UH12C (NO SERIES)
Category
Helicopter
Serial number
562261
Built
1956
Airframe hours
3,865.6
Engine
Franklin 6V-335-B, 215 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 20, 2019
Airport
PVT · Private
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
60
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Without waivers/limitations
Last flight review
August 22, 2019
Seat
Left
Restraint
Lap only
Flight hours
727 total · 109 in this make and model · 9 in the last 90 days · 3 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 7 knots, gusting 16
Visibility
10 statute miles
Lowest ceiling
None
Temperature
43 °F, dew point 30 °F
Altimeter
30.09 inHg
Observed at
KLAF, 7 nm away
METAR
METAR KLAF 122054Z 24007G16KT 10SM CLR 06/M01 A3009 RMK AO2 SLP193 T00611006 56017=

Docket · 5

The files NTSB released with the investigation on August 13, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.1 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.