CEN12CA643

NTSB accident investigation · Robinson Helicopter R44 II · Slaton, TX · September 18, 2012

Accident · No injuriesData collectionFinal report
Date
September 18, 2012, 15:45 local (20:45 UTC)
Place
Slaton, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N957RRobinson Helicopter R44 II
Defining event
Landing: Dragged wing/rotor/float/other
Weather
Visual (VMC) · Day
Status
Completed · report December 19, 2012
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA FSDO
FAA report
20120918019069A
Case key
85079

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 misalignment of the helicopter during landing, which resulted in the helicopter’s fall from a raised platform.

Findings · 1

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.

Personnel issuesPersonnel issues › Action/decision · PilotRobinson Helicopter R44 II: 1 caseAll aircraft: 56 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

After a local flight, the pilot positioned the helicopter onto its platform trailer. The helicopter’s left skid touched down on the metal surface, and the pilot then lowered the right skid to the platform. The helicopter started to slip off the platform, so the pilot raised the collective to correct the problem. However, the helicopter fell to the left, the main rotor impacted the ground, and the tail boom was severed. The helicopter came to rest on the skids; the fuel tank was compromised and a post-crash fire consumed a majority of the helicopter.

Factual narrative

After a local flight, the pilot positioned the helicopter onto its platform trailer. The helicopter’s left skid touched down on the metal surface and the pilot then lowered the right skid to the platform. The helicopter started to slip off the platform, so the pilot raised the collective to correct the problem. However, the helicopter fell to the left, the main rotor impacted the ground, and the tail boom was severed. The helicopter came to rest on the skids: the fuel tank was compromised and a post-crash fire consumed a majority of the helicopter.

Aircraft

Registration
N957R
Reported as
Robinson Helicopter R44 II
Category
Helicopter
Serial number
10598
Airframe hours
1,004
Engine
Lycoming IO-540-AE1A5, 260 horsepower, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Aerial application · Part 91
Operator
GB Aerial Applications, Inc
Registered owner
GB Aerial Applications, Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · September 2, 2011
Departed
F49 · Slaton, TX
Destination
F49 · Slaton, TX
Flight plan
Unknown
Airport
F49 · Slaton Municipal

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
59
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 45 °F
Altimeter
30.17 inHg
Observed at
KLBB, 13 nm away

Docket · 3

The files NTSB released with the investigation on November 1, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 312 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.