FTW95LA032

NTSB accident investigation · Bell 206L-3 · Ruston, LA · October 27, 1994

Accident · No injuriesLimited investigationFinal report
Date
October 27, 1994, 11:15 local (16:15 UTC)
Place
Ruston, LA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N206SFBell 206L-3
Weather
Visual (VMC) · Day
Status
Completed · report April 25, 1995
Report
Approved by Office Director
Case key
19294

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 handling of the helicopter after an apparent loss of power during a practice autorotation.

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 powerManeuvering
Autorotation - simulatedPilot in command
Reason for occurrence undeterminedFactor
Hard landingManeuvering
Rotorcraft flight controls - improper use ofPilot in commandCause

Analysis

This was the third practice autorotation with power recovery initiated at 1,000 ft above the ground. At 100 ft, and with an airspeed of 70 KTS, the flare was started. The pilot did not notice a torque change or yaw, and later stated he took this as evidence 'that the engine had quit.' Touchdown was made at a higher than desired forward speed. One blade contacted the right vertical stabilizer, and the tail boom collapsed to the right side of the helicopter. The engine was later examined, and all checks indicated that the engine was functioning normal.

Factual narrative

On October 27, 1994, at 1115 central daylight time, a Bell 206L-3, N206SF, was substantially damaged during autorotation near Ruston, Louisiana. The helicopter, flown by an airline transport rated pilot, was on a personal flight that had originated in Meridian, Mississippi. No flight plan was filed and visual meteorological conditions prevailed. The solo pilot was uninjured.

According to the pilot, he had just completed two practice autorotations, recovering with power each time. The third autorotation was entered at 1,000 feet above the ground and the flare initiated about 100 feet above the ground at 70 knots. The pilot added power; however, he did not notice torgue change or yaw. He took this as evidence of a loss of power. Due to low rotor rpm, pitch pull was delayed and touchdown was at a "higher than desired forward speed." During the landing slide a main rotor blade contacted the right vertical stabilizer, collapsing the tail boom to the right side of the helicopter.

The Federal Aviation Administration inspector (statement enclosed) examined the engine. "All checks indicated the engine was functioning normal."

Aircraft

Registration
N206SF
Reported as
Bell 206L-3
Category
Helicopter
Serial number
51160
Engine
Allison 250-C30P, 650 horsepower, turbo shaft
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Leading Edge Aviation
Airworthiness certificate
Standard, Normal
Departed
MEI · Meridian, MS
Airport
5L3 · Ruston, runway 36, 5,000 × ft, asphalt

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
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
13,393 total · 11 in this make and model · 12,903 as pilot in command · 65 in the last 90 days · 19 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 5 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 37 °F
Altimeter
30.00 inHg