WPR13CA057

NTSB accident investigation · Hughes 369D · Sheridan, OR · November 27, 2012

Accident · Minor injuriesData collectionFinal report
Date
November 27, 2012, 15:15 local (23:15 UTC)
Place
Sheridan, OR
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N163PJHughes 369D
Defining event
Maneuvering-low-alt flying: Settling with power/vortex ring state
Weather
Visual (VMC) · Day
Status
Completed · report March 13, 2013
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20121127026039A
Case key
85677

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 prevent the helicopter from entering a vortex ring state (settling with power) condition during an external load operation, which resulted in the helicopter’s main rotor blades impacting the truck.

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 parameters: descent rateAircraft › Aircraft oper/perf/capability · Not attained/maintainedHughes Helicopters HUGHES 369D: 5 casesAll aircraft: 242 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

During a Christmas tree harvest, the pilot was repositioning trees from the harvest field onto a truck bed using an 18-foot tag line. He had completed at least five loads before the accident load. During the accident load, the pilot had just released the load onto the truck when he thought the helicopter was encountering a settling with power condition. The pilot maneuvered the helicopter to land on the road in front of the truck. The pilot thought he was clear of the truck; however, the main rotor blades hit the truck just above the cab. The helicopter impacted the ground and the main rotor blades struck and separated the tailboom from the fuselage. The pilot reported that there were no preimpact mechanical malfunctions or failures with the helicopter or engine that would have precluded normal operations.

Factual narrative

During a Christmas tree harvest the pilot was repositioning the trees from the harvest field and placing them into the bed of the load truck using an 18-foot tag line. He had completed at least five loads prior to the accident load. On the accident load the pilot had just released the load into the truck when he felt the helicopter was encountering a settling with power condition. The pilot attempted to maneuver the helicopter to land on the road in front of the load truck. The pilot thought he was clear of the truck when the main rotor blades hit the truck just above the cab. The helicopter impacted the ground and the main rotor blades separated the tail boom. The pilot reported no preimpact mechanical malfunctions or failures with the helicopter or engine, which would have precluded normal operations.

Aircraft

Registration
N163PJ
Reported as
Hughes 369D
Category
Helicopter
Serial number
1068D
Airframe hours
6,645
Engine
Rolls Royce 250 C20B, 420 horsepower, turbo shaft
Damage
Substantial damage
Flight
External load · Part 133
Operator
P J Helicopters Inc
Registered owner
P J Helicopters Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · October 12, 2012
Departed
Sheridan, OR
Destination
Sheridan, OR

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
29
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, With waivers/limitations
Last flight review
February 24, 2012
Seat
Left
Flight hours
2,800 total · 450 in this make and model · 2,700 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
48 °F, dew point 37 °F
Altimeter
29.97 inHg
Observed at
MMV, 12 nm away

Docket · 3

The files NTSB released with the investigation on January 2, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.2 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.