SEA01LA029

NTSB accident investigation · Kaman K-1200 · Prineville, OR · December 10, 2000

Accident · No injuriesLimited investigationFinal report
Date
December 10, 2000, 14:00 local (22:00 UTC)
Place
Prineville, OR
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N317KAKaman K-1200
Weather
Visual (VMC) · Day
Status
Completed · report November 6, 2001
Report
Approved by Office Director
FAA report
20001210022909A
Case key
50760

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 failure to adequately compensate for 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 - on ground/waterManeuvering
Weather condition - unfavorable windFactor
Compensation for wind conditions - inadequatePilot in commandCause

Analysis

The pilot reported that while maneuvering for departure, the helicopter began to drift to the left. While attempting to correct the situation, the helicopter's left main landing gear hit the ground and the strut collapsed. The helicopter subsequently rolled over. The helicopter sustained substantial damage to the fuselage, tail boom and rotor blades. The 1356 METAR observation at Redmond, Oregon, (11 miles southwest of the accident location) reported winds from 310 degrees at 17 knots gusting to 21 knots. The pilot reported that the winds, at the time of the accident, were from the southwest at 15 knots, gusting to 29 knots. He also reported that there were no pre-accident mechanical failures that contributed to the accident.

Factual narrative

On December 10, 2000, about 1400 Pacific standard time, a Kaman K-1200, N317KA, sustained substantial damage subsequent to a dynamic rollover while maneuvering at the Prineville Airport (S39), Prineville, Oregon. The Helicopter is registered to US Bancorp Leasing & Financial, and operated by Grizzly Mountain Aviation of Prineville, Oregon. The helicopter was being operated as a visual flight rules (VFR) positioning flight under Title 14 CFR Part 91, when the accident occurred. The commercial pilot, the sole occupant of the helicopter, was not injured. Visual meteorological conditions prevailed and no flight plan was filed. There was no fire and no report of ELT activation.

The pilot reported that while maneuvering for departure, the helicopter began to drift to the left due to wind conditions. While attempting to correct the situation, the helicopter's left main landing gear hit the ground and the strut collapsed. The helicopter subsequently rolled over coming to rest on its left side. The helicopter sustained substantial damage to the fuselage, tail boom and rotor blades.

The 1356 METAR observation at Redmond, Oregon, (11 miles southwest of the accident location) reported winds from 310 degrees true at 17 knots gusting to 21 knots.

The pilot reported that the winds, at the time of the accident, were from the southwest at 15 knots, gusting to 29 knots.

The pilot reported that there were no pre-accident mechanical failures that contributed to the accident.

Aircraft

Registration
N317KA
Reported as
Kaman K-1200
Category
Helicopter
Serial number
0025
Airframe hours
4,060
Engine
Lycoming T-53-17A1, 1,500 horsepower, turbo shaft
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Grizzly Mountain Aviation
Registered owner
U.S. Bank
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · December 8, 2000 · 5 hours before
Departed
S39
Destination
ONP · Newport, OR
Airport
S39 · Prineville

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
59
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
14,000 total · 2,500 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 17 knots, gusting 21
Visibility
10 statute miles
Lowest ceiling
None
Temperature
39 °F, dew point 21 °F
Altimeter
30.00 inHg
Observed at
RDM, 11 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.