FTW89DPA03

NTSB accident investigation · Bell 47-D1 · Allen, TX · December 2, 1988

Accident · Serious injuriesFinal report
Date
December 2, 1988, 15:45 local (21:45 UTC)
Place
Allen, TX
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N74124Bell 47-D1
Weather
Visual (VMC) · Day
Status
Completed · report June 25, 1990
Report
Approved by Office Director
FAA report
19881202071199A
Case key
22693

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

Unqualified pilot's poor judgement in leveling the helicopter during the flare and contributing to this was his lack of total experience in this type aircraft.

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.

Dragged wing,rotor,pod,float or tail/skidLanding - flare/touchdown
Rotor system,tail rotor blade - separation
Autorotation - misjudgedPilot in commandCause
Lack of total experience in type of aircraftUnqualified personFactor
Roll overLanding - flare/touchdown

Analysis

The non-rated, private airplane pilot was flying his helicopter in the traffic pattern and practicing power recovery autorotations, when on the third or fourth attempt, the pilot/owner flared excessively causing the tail rotor blades to strike the ground. The tail rotor system separated and the helicopter rolled over resulting in substantial damage to the main rotor system and airframe.

Aircraft

Registration
N74124
Reported as
Bell 47-D1
Category
Helicopter
Serial number
WH-5009
Engine
Franklin 6V4-200-C32, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Skelton, Paul E.
Airworthiness certificate
Standard, Normal

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
57
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Expired
Seat
Left
Flight hours
1,100 total

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
15 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 36 °F
Altimeter
30.00 inHg
Observed at
ADS, 10 nm away

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 N74124 · 1

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