FTW03LA105

NTSB accident investigation · Aerospatiale SA341G · Alpine, TX · March 6, 2003

Accident · Minor injuriesLimited investigationFinal report
Date
March 6, 2003, 09:30 local (15:30 UTC)
Place
Alpine, TX
Injuries
4 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N16KHAerospatiale SA341G
Weather
Visual (VMC) · Day
Status
Completed · report July 23, 2003
Report
Approved by Office Director
Parties
Federal Aviation Administartion (FSDO)
FAA report
20030306002349A
Case key
56590

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 failure to maintain translational lift, which resulted in an uncontrolled descent of the helicopter during takeoff. A contributing factor was the gusty tailwind condition.

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 flightTakeoff
Translational lift - not maintainedPilot in commandCause
Weather condition - gustsFactor
Weather condition - tailwindFactor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - water

Analysis

The pilot flew the helicopter to a mountain top and landed at an elevation of 5,000 feet msl. After a short time, the passengers and pilot reboarded the helicopter for the return flight. The pilot reported that during takeoff, as the helicopter entered translational lift, it encountered a gust of wind from the rear. Subsequently, the helicopter entered an uncontrolled descent and impacted terrain. The helicopter came to rest in a shallow creek.

Factual narrative

On March 6, 2003, at 0930 central standard time, an Aerospatiale SA341G helicopter, N16KH, was substantially damaged when it collided with terrain following a loss of control during takeoff from Cathedral Mountain, approximately 20 miles south of Alpine, Texas. The helicopter was registered to and operated by a private individual doing business as Bear Helicopters Inc., of El Paso, Texas. The pilot, who held an airline transport pilot certificate, and his three passengers sustained minor injuries. Visual meteorological conditions prevailed, and a flight plan was not filed for the 14 Code of Federal Regulations Part 135 nonscheduled, air taxi flight. The flight was originating at the time of the accident and was destined for Marfa, Texas.

According to the pilot, who had accumulated a total of 1,000 hours in the SA341, the flight initially departed from Marfa and flew to Cathedral Mountain (5,000 feet msl), where the helicopter landed. The purpose of the flight was for the passengers to visit real estate property. After visiting the property, the passengers and pilot reboarded the helicopter for a return flight to Marfa. The pilot reported that he initiated the takeoff, entered translational lift, and the helicopter then encountered a gust of wind from the rear. Subsequently, the helicopter lost lift and impacted trees and the ground. The helicopter came to rest in a shallow creek.

Photographs of the accident site revealed that the helicopter's tailboom was separated.

Aircraft

Registration
N16KH
Reported as
Aerospatiale SA341G
Category
Helicopter
Serial number
1456
Airframe hours
1,900
Engine
Turbomeca ASTAZOUII, 600 horsepower, turbo shaft
Damage
Substantial damage
Flight
Part 135
Registered owner
Bear Helicopters, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 2, 2002 · 20 hours before
Departed
NONE · Alpine, TX
Destination
MRF · Marfa, TX

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
57
Injuries
None
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Last flight review
May 1, 2002
Seat
Right
Flight hours
16,000 total · 1,000 in this make and model · 16,000 as pilot in command · 60 in the last 90 days · 10 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 13 knots, gusting 24
Visibility
10 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 23 °F
Altimeter
30.07 inHg
Observed at
MRF, 20 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.