FTW02LA104

NTSB accident investigation · Hughes 269A-1 · Fort Collins, CO · March 27, 2002

Accident · No injuriesLimited investigationFinal report
Date
March 27, 2002, 12:05 local (19:05 UTC)
Place
Fort Collins, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N8942FHughes 269A-1
Weather
Visual (VMC) · Day
Status
Completed · report August 26, 2002
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20020327005599A
Case key
54411

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 failure to maintain control of the helicopter while hovering. Contributing factors were the tailwind and gusty wind conditions.

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 control - in flightHover
Aircraft control - not maintainedPilot in command(cfi)Cause
Weather condition - gustsFactor
Weather condition - tailwindFactor
In flight collision with terrain/waterDescent - uncontrolled
Roll overLanding - flare/touchdown

Analysis

On takeoff during the instructional flight, the wind was variable at 2 to 3 knots. As the student was hovering the helicopter at approximately 3 feet agl, a sudden gust of wind caused the helicopter to "wobble." The instructor took control of the aircraft, and another wind gust turned the helicopter downwind. The instructor attempted to land. However, the wind continued to drive the helicopter forward with an excessive nose low attitude. With the tail rotor into the wind, creating a "high power demand and limited tail rotor authority," the helicopter "skipped" along the dirt 2 or 3 times, the right strut failed, and the aircraft to rolled over on its right side. The flight instructor reported the wind was gusting to 60 knots. The reported wind at a location 8 miles south of the accident site was 260 degrees at 13 knots gusting to 25 knots.

Factual narrative

On March 27, 2002, approximately 1205 mountain standard time, a Hughes 269A-1 helicopter, N8942F, was substantially damaged during a loss of control while hovering at the Fort Collins Downtown Airport, near Fort Collins, Colorado. The helicopter was registered to and operated by Freedom Flight Services LLC, of Berthoud, Colorado. The flight instructor and student pilot were not injured. Visual meteorological conditions prevailed, and a flight plan was not filed for the 14 Code of Federal Regulations Part 91 instructional flight. The local flight was originating at the time of the accident.

On the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2), and in a telephone interview with the NTSB investigator-in-charge, the instructor pilot reported that the wind was 2 to 3 knots at the time of takeoff, but forecasted to be gusty in the afternoon. Shortly after lifting off and while hovering at an altitude of approximately 3 feet, the helicopter with the student pilot at the flight controls, encountered a very strong gust of wind and began to "wobble." The instructor took control of the helicopter, "picking it up" to approximately 15 feet, when another gust of wind hit the helicopter, turning it sideways, and then downwind. The instructor stated he was attempting "get it on the ground, but the wind continued to drive the helicopter forward with excessive nose over tendency." With the tail rotor into the wind, creating a "high power demand and limited tail rotor authority," the helicopter "skipped" along the dirt 2 or 3 times. The helicopter traveled forward 60 to 70 yards, the right strut failed, and the helicopter rolled over on its right side. The instructor pilot reported the wind was gusting to 60 knots at the time of the accident.

At 1215, the reported weather at the Fort Collins-Loveland Municipal Airport, located 8 nm south of the accident site, was wind from 260 degrees at 13 knots gusting to 25 knots, visibility 10 statute miles, sky clear, temperature 19 degrees C, dewpoint minus 6 degrees C, and an altimeter of 29.76 inches of mercury.

An FAA inspector, who responded to the accident site, reported that all 3 main rotor blades were destroyed, the fuselage was bent, all Plexiglas broken, and the right skid was separated from the strut.

Aircraft

Registration
N8942F
Reported as
Hughes 269A-1
Category
Helicopter
Serial number
1500019
Airframe hours
2,270
Engine
Lycoming HIO-360-AIA, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Freedom Flight Services LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 1, 2001 · 50 hours before
Departed
3V5 · Fort Collins, CO
Airport
3V5 · Fort Collins Downtown Airport

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
42
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 2, With waivers/limitations
Last flight review
October 25, 2001
Seat
Left
Flight hours
1,500 total · 400 in this make and model · 300 in the last 90 days · 100 in the last 30 days · 8 in the last 24 hours
Role
Student pilot
Age
31
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
October 11, 2001
Seat
Right
Flight hours
86 total · 13 in this make and model · 21 as pilot in command · 12 in the last 90 days · 2 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 13 knots, gusting 25
Visibility
10 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 21 °F
Altimeter
29.76 inHg
Observed at
FNL, 8 nm away

Docket · 3

The files NTSB released with the investigation on July 30, 2002, on NTSB’s docket system: statements, records, photos and specialists’ reports. 600 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 N8942F · 1

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