WPR14CA319

NTSB accident investigation · Bell 206B · Salinas, CA · July 19, 2014

Accident · No injuriesData collectionFinal report
Date
July 19, 2014, 05:30 local (12:30 UTC)
Place
Salinas, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N291SHBell 206B
Defining event
Takeoff: Dynamic rollover
Weather
Visual (VMC) · Dawn
Status
Completed · report September 24, 2014
Report
Approved by Office Director
NTSB office
Western Pacific Region
Case key
89764

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 ensure adequate clearance from ground obstacles during takeoff which resulted in loss of aircraft control.

Findings · 4

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotBell 206B: 45 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedBell 206B: 8 casesAll aircraft: 3,958 casesProbable cause
Object/animal/substance: ground equipmentEnvironmental issues › Physical environment · Contributed to outcomeBell 206B: 1 caseAll aircraft: 52 cases

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 had landed in a field that had irrigation sprinkler pipes arranged in field rows. During takeoff and forward movement to reposition the helicopter, the right side spray boom caught on one of the sprinkler head risers which resulted in a dynamic rollover of the helicopter to the right. The helicopter came to rest on its right side and sustained substantial damage to the tail boom and damage to the main rotor blades. The pilot reported no preimpact mechanical malfunctions or failures that would have precluded normal operation of the helicopter.

Factual narrative

The pilot reported that he had landed in a field that had irrigation sprinkler pipes arranged in field rows. During takeoff and forward movement to reposition the helicopter, the right side spray boom caught on one of the sprinkler head risers which resulted in a dynamic rollover of the helicopter to the right. The helicopter came to rest on its right side and sustained substantial damage to the tail boom and damage to the main rotor blades. The pilot reported no preimpact mechanical malfunctions or failures that would have precluded normal operation of the helicopter.

Aircraft

Registration
N291SH
Reported as
Bell 206B (B3)
Category
Helicopter
Serial number
2467
Built
1978
Airframe hours
17,586.5
Engine
Rolls-Royc 250-C20B, 420 lbs thrust, turbo shaft
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
R&B Helicopters
Registered owner
Southern Helicopter Service Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · June 6, 2014
Departed
SNS · Salinas, CA
Destination
SNS · Salinas, CA

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
60
Injuries
None
Certificates
Commercial, Private
Airplane ratings
Single-engine land
Medical
Class 2, With waivers/limitations
Last flight review
March 11, 2014
Seat
Right
Restraint
3-point
Flight hours
20,950 total · 5,100 in this make and model · 20,950 as pilot in command · 130 in the last 90 days · 33 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dawn
Wind
330° at 2 knots
Visibility
10 statute miles
Lowest ceiling
1,200 ft overcast
Temperature
61 °F, dew point 55 °F
Altimeter
29.97 inHg
Observed at
ksns, 7 nm away

Docket · 1

The files NTSB released with the investigation on September 15, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 441 KB in all.