NYC91LA241

NTSB accident investigation · Robinson R22B · Wexford, PA · September 20, 1991

Accident · No injuriesLimited investigationFinal report
Date
September 20, 1991, 11:30 local (15:30 UTC)
Place
Wexford, PA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N2289KRobinson R22B
Weather
Visual (VMC) · Day
Status
Completed · report May 3, 1993
Report
Approved by Office Director
FAA report
19910920042199A
Case key
37015

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 procedures during a practice autorotation, and selection of unsuitable terrain. Contributing to the accident was a loss of engine power for undetermined reasons, at a low altitude.

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.

Loss of engine power(total) - nonmechanicalDescent
Autorotation - initiatedPilot in command
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Powerplant - failure,totalFactor
Procedures/directives - improperPilot in commandCause
Loss of engine powerDescent - emergency
In flight collision with objectDescent - emergency
Object - tree(s)Cause

Analysis

At 600 feet AGL the pilot attempted a practice autorotation. At 200 feet AGL the pilot said the engine lost power and 'stopped completely'. The pilot did not indicate what his engine or rotor instruments were indicating prior to the loss of engine power. The main rotor blades contacted trees at approximately 25 feet AGL, and the helicopter came to rest on a 25% upward slope. The helicopter and engine were removed from the accident site. The FAA test ran the engine for 45 minutes and did not find any discrepancies.

Aircraft

Registration
N2289K
Reported as
Robinson R22B
Category
Helicopter
Serial number
0513
Airframe hours
1,973
Engine
Lycoming O-320-B2C, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Frank R. Zokaites
Registered owner
Frank R. Zokaites
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 20, 1991 · 55 hours before

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
35
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
1,054 total · 653 in this make and model · 871 as pilot in command · 60 in the last 90 days · 12 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 13 knots
Visibility
15 statute miles
Lowest ceiling
2,800 ft broken
Temperature
64 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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