CEN09CA604

NTSB accident investigation · Bell 407 · Fort Worth, TX · September 23, 2009

Accident · No injuriesData collectionFinal report
Date
September 23, 2009, 15:40 local (20:40 UTC)
Place
Fort Worth, TX
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N6040YBell 407
Defining event
Landing: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report March 3, 2010
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA FSDO
FAA report
20090923017739A
Case key
74800

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

Failure of the pilot to maintain control during landing.

Findings · 2

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 parametersAircraft › Aircraft oper/perf/capability · Not attained/maintainedBell 407: 4 casesAll aircraft: 1,269 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotBell 407: 19 casesAll aircraft: 9,295 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 flight instructor was demonstrating a landing using the manual Full-Authority Digital Engine Control (FADEC) mode. While on short final, approximately 3 to 5 feet above ground level, the helicopter quickly descended right and forward. Suspecting wind shear, the flight instructor applied corrective controls but was unable to reverse the downward motion prior to ground contact. The helicopter's left rear skid, then right rear skid, contacted the ground before the flight instructor could bring the helicopter back to a hover. A postflight examination of the helicopter revealed damage to the vertical stabilizer and tail boom.

Factual narrative

The flight instructor was demonstrating a landing using the manual Full-Authority Digital Engine Control (FADEC) mode. While on short final, approximately 3 to 5 feet above ground level, the helicopter quickly descended right and forward. Suspecting wind shear, the flight instructor applied corrective controls, but was unable to reverse the downward motion prior to ground contact. The helicopter's left rear skid contacted the ground followed by the right rear skid before the flight instructor could bring the helicopter back to a hover. A post-flight examination of the helicopter revealed damage to the vertical stabilizer and tail boom.

Aircraft

Registration
N6040Y
Reported as
Bell 407
Category
Helicopter
Serial number
53371
Airframe hours
5,206
Engine
Rolls-Royc 250-C47B, 650 horsepower, turbo shaft
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Bell Helicopter Textron
Registered owner
Textron Financial Corp
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 20, 2009 · 56 hours before
Departed
KAFW · Fort Worth, TX
Destination
Fort Worth, TX
Airport
KAFW · Fort Worth Alliance

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
Pilot
Age
66
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
January 6, 2009
Seat
Left
Flight hours
23,000 total · 1,200 in this make and model · 22,000 as pilot in command · 100 in the last 90 days · 30 in the last 30 days · 1 in the last 24 hours
Role
Student pilot
Age
48
Injuries
None
Certificate
Foreign
Airplane ratings
Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Unknown
Seat
Right
Flight hours
4,550 total · 150 in this make and model · 30 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 8 knots
Visibility
10 statute miles
Temperature
70 °F, dew point 48 °F
Altimeter
30.18 inHg
Observed at
AFW, 5 nm away

Docket · 1

The files NTSB released with the investigation on November 3, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 682 KB 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 N6040Y · 1

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