ERA12CA199

NTSB accident investigation · Bell OH-58A · Eufaula, AL · March 1, 2012

Accident · No injuriesData collectionFinal report
Date
March 1, 2012, 12:00 local (18:00 UTC)
Place
Eufaula, AL
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Emergency descent
Aircraft
N38FABell OH-58A
Defining event
Autorotation: Hard landing
Weather
Visual (VMC) · Day
Status
Completed · report July 18, 2012
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20120301003829A
Case key
83005

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 pilot's inadequate compensation for the gusting wind, which resulted in an excessive descent rate and 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: descent rateAircraft › Aircraft oper/perf/capability · Not attained/maintainedBell OH-58A: 2 casesAll aircraft: 242 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotBell OH-58A: 12 casesAll aircraft: 9,295 casesProbable cause
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Response/compensationBell OH-58A: 1 caseAll aircraft: 1,199 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 reported that he was conducting annual refresher training with a certified flight instructor. During a practice autorotation to runway 18, the helicopter descended below a nearby tree line and then suddenly dropped. He stated that the helicopter descended so rapidly that he was unable to arrest the descent rate and the helicopter landed hard. The pilot reported that the wind was from 230 degrees at 10 knots with gusts to 19 knots at the time of the accident. He reported that, as the helicopter descended below treetop level, "…we lost all lift and wind advantage." The hard landing resulted in a fractured tail boom. The pilots reported no mechanical malfunctions or failures that would have precluded normal operation.

Factual narrative

The pilot reported that he was conducting annual refresher training with a certified flight instructor. During a practice autorotation to runway 18, the helicopter descended below a nearby tree line and "dropped vertically." He stated that the helicopter descended so rapidly that he was unable to arrest the descent rate and the helicopter landed hard. The pilot reported the winds from 230 degrees at 10 knots with gusts to 19 knots at the time of the accident. He reported that, as the helicopter descended below treetop level, "…we lost all lift and wind advantage…" The hard landing resulted in a fractured tail boom. The pilots reported no mechanical malfunctions or failures that would have precluded normal operation.

Aircraft

Registration
N38FA
Reported as
Bell OH-58A
Category
Helicopter
Serial number
70-15448
Airframe hours
7,706
Engine
Rolls Royce T63-A720, 420 horsepower, turbo shaft
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
B & S Air Inc
Registered owner
B & S Air Inc
Airworthiness certificate
Special, Restricted (Special); Standard, Utility
Last inspection
100 hour · October 21, 2011
Departed
EUF · Eufaula, AL
Destination
EUF · Eufaula, AL
Airport
EUF · Weedon Field Airport, runway 18, 5,000 × 100 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
65
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
January 19, 2011
Seat
Right
Flight hours
23,155 total · 14,000 in this make and model · 22,000 as pilot in command
Role
Flight instructor
Age
56
Injuries
None
Certificates
Airline transport, Flight instructor
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, With waivers/limitations
Last flight review
September 17, 2011
Seat
Left
Flight hours
25,000 total · 8,000 in this make and model · 24,950 as pilot in command · 240 in the last 90 days · 80 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 7 knots, gusting 15
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 63 °F
Altimeter
29.95 inHg
Observed at
EUF

Docket · 6

The files NTSB released with the investigation on May 24, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.6 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 N38FA · 2

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