FTW94LA248

NTSB accident investigation · Scorpion 133 · Fredricksburg, TX · July 25, 1994

Accident · Serious injuriesLimited investigationFinal report
Date
July 25, 1994, 13:00 local (18:00 UTC)
Place
Fredricksburg, TX
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N845HScorpion 133
Weather
Visual (VMC) · Day
Status
Completed · report February 24, 1995
Report
Approved by Office Director
FAA report
19940725019339A
Case key
19121

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 inadequate compensation for wind conditions. Factors were the gusty wind and the non-certificated pilot's inadequate training.

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 control - in flightHover
Weather condition - gustsFactor
Compensation for wind conditions - inadequatePilot in commandCause
Inadequate trainingPilot in commandFactor
Hard landingLanding - flare/touchdown

Analysis

The non-certificated pilot was practicing hovering his homebuilt helicopter. After 20 minutes of practice, there was a hard touchdown on the rear portion of the left skid. The skid collapsed and the tail rotor struck the ground. At that time the pilot turned and looked back toward the tail rotor and was struck in the face by a tail rotor blade. The pilot reported wind from the south at 15 miles per hour, gusting to 20. He also related that a gust of wind caught the helicopter while he was hovering about 18 inches above the ground.

Factual narrative

On July 25, 1994, approximately 1300 central daylight time, a Scorpion 133, N845H, was substantially damaged during hovering operations at Fredricksburg, Texas. The non-certificated pilot was the owner, builder, and operator. The pilot sustained serious injuries. Weather at the time of the accident was visual meteorological conditions.

Witnesses and family members reported that the pilot was practicing hover operations when he made contact with the ground. The first and second contact resulted in no damage; however, the third ground contact resulted in the left skid breaking and the tail rotor striking the ground. Following the skid failure the pilot looked outside and to the rear of the aircraft to see what damage had occurred, at that time he was struck in the face by a tail rotor blade. The strike resulted in the pilot sustaining serious injuries and a loss of consciousness.

The pilot reported wind from the south gusting to 20 miles per hour. He further stated in his enclosed report that while hovering about 18 inches off the ground a gust of wind caught the aircraft.

The 13 year old daughter of the pilot observed the event. When the skid collapsed the aircraft leaned over to the right, bringing the main rotor tip path close to the ground. The engine continued to run after the pilot lost consciousness. The daughter crawled under the main rotors and shut down the aircraft.

Aircraft

Registration
N845H
Reported as
Scorpion 133
Category
Helicopter, amateur-built
Serial number
8458
Airframe hours
4
Engine
Rotorway RW133, 140 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Itri, Donald
Last inspection
Continuous airworthiness · July 25, 1994 · 36 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
48
Seat
Left
Flight hours
50 total · 50 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 13 knots, gusting 17
Visibility
10 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.