ERA12CA580

NTSB accident investigation · Sikorsky S-76C · Theodore, AL · September 24, 2012

Accident · No injuriesData collectionFinal report
Date
September 24, 2012, 16:45 local (21:45 UTC)
Place
Theodore, AL
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N781PSikorsky S-76C
Defining event
Taxi: Miscellaneous/other
Weather
Visual (VMC) · Day
Status
Completed · report June 4, 2013
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20120924022099A
Case key
85154

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 adequate obstacle clearance while taxiing.

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 · PilotSikorsky S-76C: 1 caseAll aircraft: 1,386 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

The pilot reported that during a hover-taxi maneuver, the tail rotor made contact with the main rotor blade of a parked helicopter that was tied down. The taxiing helicopter sustained substantial damage to the tail rotor blades. The pilot did not report and postaccident examination did not reveal any preaccident mechanical malfunctions or failures that would have precluded normal operation.

Factual narrative

The pilot reported that during a hover taxi maneuver, the tail rotor made contact with a main rotor blade of a parked helicopter that was tied down. The taxiing helicopter sustained substantial damage to the tail rotor blades. Examination of the helicopter did not reveal any preimpact mechanical malfunctions. The pilot did not report any preaccident mechanical malfunctions or failures that would have precluded normal operation.

Aircraft

Registration
N781P
Reported as
Sikorsky S-76C
Category
Helicopter
Serial number
760630
Airframe hours
7,573
Engines
2S2, 923 hp, turbo shaftTurbomeca 2S2, 923 hp, turbo shaft
Damage
Substantial damage
Flight
Positioning · Part 91
Operator
Phi Inc
Registered owner
Phi Inc
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · September 22, 2012 · 49 hours before
Departed
2AL4 · Bayou La Batre, AL
Destination
HUM · Houma, AL
Airport
2AL4 · Bayou La Batre

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Co-pilot
Age
33
Injuries
None
Certificate
Airline transport
Instrument ratings
Helicopter
Medical
Class 1, Without waivers/limitations
Seat
Left
Flight hours
2,195 total · 776 in this make and model · 1,386 as pilot in command · 137 in the last 90 days · 52 in the last 30 days
Role
Pilot
Age
43
Injuries
None
Certificate
Airline transport
Airplane ratings
Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 1, Without waivers/limitations
Last flight review
May 31, 2012
Seat
Right
Flight hours
5,208 total · 83 in this make and model · 3,888 as pilot in command · 134 in the last 90 days · 21 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 61 °F
Altimeter
30.09 inHg
Observed at
BFM

Docket · 4

The files NTSB released with the investigation on May 13, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 707 KB 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.