FTW89LA104

NTSB accident investigation · Bell 47D-1 · Ardmore, OK · May 26, 1989

Accident · No injuriesLimited investigationFinal report
Date
May 26, 1989, 17:15 local (22:15 UTC)
Place
Ardmore, OK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2202CBell 47D-1
Weather
Visual (VMC) · Day
Status
Completed · report July 11, 1990
Report
Approved by Office Director
FAA report
19890526059139A
Case key
22872

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 flight instructor failed to recognize that the aircraft was developing a dangerous sink rate during the autorotation and take corrective action by executing a power recovery. Contributing to the accident were the gusty wind conditions.

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.

In flight encounter with weatherLanding - flare/touchdown
Weather condition - unfavorable windFactor
Autorotation - performedPilot in commandCause
Weather condition - gustsFactor
Hard landingLanding - flare/touchdown
Remedial action - inadequatePilot in commandCause
Power on landing - not performedPilot in commandFactor

Analysis

Acft was damaged as a result of a hard lndg during a practice touchdown autorotation that was being demonstrated by the CFI to the student plt. Winds had increased during the instructional flt to the pt that the student was having a hard time controlling the acft, when the CFI decided to demonstarte autorotations. During the 2nd auto, the acft developed a high sink rate during final descent which the CFI could not arrest prior to the hard landing. The CFI stated that the winds were northerly at 13 KTS gustong to 21 KTS and that he felt they contributed to the accident.

Aircraft

Registration
N2202C
Reported as
Bell 47D-1
Category
Helicopter
Serial number
M-1
Airframe hours
3,434
Engine
Franklin 210, 210 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Versatile Aviation
Airworthiness certificate
Standard, Normal; Standard, Utility
Last inspection
Annual · May 20, 1989 · 21 hours before
Departed
1FO
Destination
1FO
Airport
IFO · Ardmore Downtown

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
24
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
343 total · 95 in this make and model · 205 as pilot in command · 101 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 13 knots, gusting 21
Visibility
10 statute miles
Lowest ceiling
1,500 ft broken
Temperature
79 °F, dew point 66 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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

Other investigations on N2202C · 2

Matched to the same aircraft by N-number and date.