SEA89LA172

NTSB accident investigation · Robinson R22 Beta · Hillsboro, OR · September 14, 1989

Accident · Serious injuriesLimited investigationFinal report
Date
September 14, 1989, 10:00 local (17:00 UTC)
Place
Hillsboro, OR
Injuries
1 serious, 1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N358JSRobinson R22 Beta
Weather
Visual (VMC) · Day
Status
Completed · report June 22, 1992
Report
Approved by Office Director
FAA report
19890914034879A
Case key
41080

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 misjudging altitude and airspeed.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Hard landingManeuvering
Autorotation - performedPilot in command(cfi)
Airspeed - misjudgedPilot in command(cfi)Cause
Altitude - misjudgedPilot in command(cfi)Cause
Main gear collapsedManeuvering
Landing gear,skid assembly - overload
Roll overManeuvering

Analysis

While demonstrating a 180 degree autorotation, the helicopter descended too rapidly. The instructor tried to cushion the impact, however, the tail rotor contacted the ground first followed by the skids. The left skid collapsed and the helicopter rolled over.

Aircraft

Registration
N358JS
Reported as
Robinson R22 Beta
Category
Helicopter
Serial number
0628
Airframe hours
1,253
Engine
Lycoming O-320-B2C, 124 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Hillsboro Helicopter
Registered owner
Stubblefield, Jerry
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 11, 1989 · 35 hours before
Airport
H10 · Portland-Hillsboro, runway 30, 6,600 × 150 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
27
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
818 total · 581 in this make and model · 712 as pilot in command · 209 in the last 90 days · 120 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
20 statute miles
Lowest ceiling
None

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.