CEN13CA276

NTSB accident investigation · Bell 206-L4 · Fort Worth, TX · May 10, 2013

Accident · No injuriesData collectionFinal report
Date
May 10, 2013, 10:00 local (15:00 UTC)
Place
Fort Worth, TX
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Emergency descent
Aircraft
N2036FBell 206-L4
Defining event
Autorotation: Hard landing
Weather
Visual (VMC) · Day
Status
Completed · report July 23, 2013
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20130510007049A
Case key
86893

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The flight instructor's inadequate supervision and delayed remedial action during a practice autorotation, which resulted in a hard landing.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: landing flareAircraft › Aircraft oper/perf/capability · Not attained/maintainedBell 206-L4: 2 casesAll aircraft: 1,285 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · Instructor/check pilotBell 206-L4: 1 caseAll aircraft: 894 casesProbable cause
Attention/monitoring: task monitoring/vigilancePersonnel issues › Psychological · Instructor/check pilotBell 206-L4: 1 caseAll aircraft: 330 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot receiving instruction was performing a practice right 180-degree autorotation. During the approach, the airspeed decreased to about 40 knots, which shortened the approach angle. At 8 to 10 feet above the ground, the flight instructor advised the pilot to apply forward cyclic while maintaining the collective position. The flight instructor then "used what was left of the rotor rpm to cushion the landing." During the touchdown, the helicopter landed hard, which resulted in structural damage to the tailboom. The pilot reported no preimpact mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Factual narrative

The pilot receiving instruction was conducting a practice right 180 degree autorotation. During the approach, the airspeed decreased to approximately 40 knots which shortened the approach angle. At 8 to 10 feet above the ground, the flight instructor advised the pilot to apply forward cyclic while maintaining the collective position. The flight instructor then "used what was left of the rotor RPM to cushion the landing." During the touchdown, the helicopter landed hard, which resulted in structural damage to the tailboom. The pilot reported no preimpact mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Aircraft

Registration
N2036F
Reported as
Bell 206-L4
Category
Helicopter
Serial number
52123
Engine
Rolls Royce 250-C30P, 650 horsepower, turbo shaft
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Bell Helicopter Customer Training Academy
Registered owner
Bell Helicopter Textron Inc
Airworthiness certificate
Standard, Normal
Departed
AFW · Fort Worth, TX
Destination
AFW · Fort Worth, TX
Airport
PVT · Private

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
49
Injuries
None
Certificates
Commercial, Private, Flight instructor
Instrument ratings
Helicopter
Medical
Class 2, Without waivers/limitations
Last flight review
April 25, 2013
Seat
Left
Flight hours
3,900 total · 40 in this make and model · 3,500 as pilot in command · 85 in the last 90 days · 25 in the last 30 days · 4 in the last 24 hours
Role
Pilot
Injuries
None
Certificates
Commercial, Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Unknown
Seat
Right

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
3 statute miles
Lowest ceiling
1,600 ft overcast
Temperature
70 °F, dew point 68 °F
Altimeter
30.00 inHg

Docket · 1

The files NTSB released with the investigation on May 16, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.9 MB in all.

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 N2036F · 1

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