FTW00LA145

NTSB accident investigation · Bell 47G · San Antonio, TX · May 9, 2000

Accident · No injuriesLimited investigationFinal report
Date
May 9, 2000, 17:30 local (22:30 UTC)
Place
San Antonio, TX
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N14408Bell 47G
Weather
Visual (VMC) · Day
Status
Completed · report November 29, 2000
Report
Approved by Office Director
FAA report
20000509014449A
Case key
49203

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 improper touchdown performed by the flight instructor.

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.

Nose downLanding - roll
Autorotation - performedPilot in command(cfi)
Touchdown - improperPilot in command(cfi)Cause
Misc rotorcraft,main rotor/tail boom contact

Analysis

During a touchdown autorotation, which the flight instructor was demonstrating, the helicopter touched down with forward movement. As the helicopter was sliding along the ground, it suddenly stopped and went up onto the toes of the skids before settling back onto the skids. During the event, the main rotor blades struck the tailboom forward of the tailrotor area and severed the tailboom

Factual narrative

On May 9, 2000, at 1730 central daylight time, a Bell 47G helicopter, N14408, was substantially damaged when it nosed down during a practice autorotation at the Stinson Municipal Airport near San Antonio, Texas. The helicopter was owned by Stinson Flight Center, LLC, and operated by Stinson Air Center, LLC, under 14 Code of Federal Regulations Part 91. The commercial pilot and the pilot rated student were not injured. Visual meteorological conditions prevailed for the local instructional flight, and a flight plan was not filed. The flight originated at the Stinson Municipal Airport, at 1700.

During a touchdown autorotation, which the flight instructor was demonstrating, the helicopter touched down with forward movement. As the helicopter was sliding along the ground, it suddenly stopped and went up on the toes of the skids before settling back onto the skids. During the event, the main rotor blades struck the tailboom forward of the tailrotor area and severed the tailboom. The operator reported that both main rotor blades, the front skid crossboom, the tailrotor gearbox, and both tailrotor blades sustained damage.

The FAA inspector who examined the accident site, reported that the grass area north of runway 9 had minute indentations.

Aircraft

Registration
N14408
Reported as
Bell 47G
Category
Helicopter
Serial number
988
Airframe hours
710
Engine
Lycoming VO-435-A1, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Stinson Air Center LLC
Registered owner
Stinson Flight Center, LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 7, 2000
Departed
SSF
Airport
SSF · Stinson Municipal

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
38
Certificates
Flight instructor, Commercial, Private
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
1,745 total · 350 in this make and model · 1,435 as pilot in command · 105 in the last 90 days · 30 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
7 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 72 °F
Altimeter
29.00 inHg
Observed at
SSF

FAA reports on this event · 1

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