CEN14LA103

NTSB accident investigation · Bell 430 · West Delta 109 · January 5, 2014

Accident · No injuriesLimited investigationFinal report
Date
January 5, 2014, 10:00 local (16:00 UTC)
Place
West Delta 109
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N430CTBell 430
Defining event
Maneuvering-hover: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed · report September 24, 2014
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Jacksonville FSDO
FAA report
20140105002489A
Case key
88636

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 maintain tail rotor clearance from a handrail on a crane davit on an oil platform during landing.

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.

Action: incorrect action performancePersonnel issues › Action/decision · PilotBell 430: 1 caseAll aircraft: 1,386 casesProbable cause
Tail rotor: tail rotor bladeAircraft › Aircraft propeller/rotor · Damaged/degradedBell 430: 2 casesAll aircraft: 31 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 she was making a normal approach to the oil platform. Both cranes were shut down on the oil platform, and she received a green deck for landing. The helicopter was over the landing circle when she turned the helicopter's tail and felt a severe shudder. She immediately landed and shut down the helicopter. The examination of the helicopter and landing platform revealed that the tail rotor blades had struck a handrail on the east crane davit, which resulted in substantial damage to the tail rotor gearbox and drivetrain.

Factual narrative

On January 5, 2014, about 1000 central standard time, a Bell B430 helicopter, N430CT, sustained substantial damage during landing when the tail rotor struck a handrail on the crane davit on the West Delta 109 oil platform located in the Gulf of Mexico. The pilot and passenger were not injured. The helicopter was owned and operated by Chevron USA Inc., under the provisions of the 14 Code of Federal Regulations Part 91 as a business flight. Visual meteorological conditions prevailed at the time of the accident. The helicopter departed the Chevron Main Pass 313 oil platform about 0930, and was on a company visual flight rules (VFR) flight plan. The pilot reported that both cranes were shut down on the oil platform and she received a "green" deck for landing. The pilot made a normal approach to the platform. The helicopter was over the landing circle when she turned the helicopter's tail and felt a severe shudder. She immediately landed and shut down the helicopter. The examination of the landing platform and helicopter revealed that the tail rotor blades had struck a handrail on the crane davit, which resulted in substantial damage to the tail rotor gearbox and drivetrain.

Aircraft

Registration
N430CT
Reported as
Bell 430
Category
Helicopter
Serial number
49089
Built
2002
Airframe hours
11,122
Engines
Rolls-Royce 250-C40B, 715 lbs thrust, turbo shaftRolls-Royce 250-C40B, 715 lbs thrust, turbo shaft
Damage
Substantial damage
Flight
Business · Part 91
Operator
Chevron U S A Inc
Registered owner
Chevron U S A Inc
Airworthiness certificate
Standard, Transport
Last inspection
AAIP · December 23, 2013
Departed
Mp313, GM
Destination
West Delta 109, GM
Flight plan
Company VFR
Airport
None · West Delta 109

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
55
Injuries
None
Certificate
Airline transport
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 1, With waivers/limitations
Last flight review
December 1, 2013
Seat
Right
Flight hours
10,047 total · 1,300 in this make and model · 8,310 as pilot in command · 103 in the last 90 days · 42 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 7 knots
Visibility
10 statute miles
Temperature
64 °F
Altimeter
30.02 inHg
Observed at
BVE, 30 nm away

Docket · 1

The files NTSB released with the investigation on March 18, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.5 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.