- Date
- July 27, 2011, 19:30 local (Jul 28, 2011, 00:30 UTC)
- Place
- Creston, IL
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N10009Texas Helicopter OH-13H/M74A
- Defining event
- Landing-flare/touchdown: Dynamic rollover
- Weather
- Visual (VMC) · Day
- Status
- Completed · report October 6, 2011
- Report
- Approved by Office Director
- NTSB office
- Central Region
- Parties
- Federal Aviation Administration
- FAA report
- 20110727016969A
- Case key
- 81264
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 adequate skid clearance from the helicopter cart during landing, resulting in a dynamic rollover.
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.
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
According to the pilot, he was landing the helicopter on a helicopter cart when its skid got caught on the cart and the helicopter subsequently rolled over. The pilot reported there were no mechanical malfunctions with the helicopter during the flight, and substantial damage was sustained to the helicopter tailboom when it rolled. Dynamic rollover is the tendency of a helicopter to continue rolling when the critical angle is exceeded, if one skid is on the ground, and the helicopter is pivoting around that point. Dynamic rollover is possible when a skid is caught by a projection on the surface or when landing on a slope.
Factual narrative
The pilot was landing the helicopter on a helicopter cart. He said that the helicopter's skid got caught on the cart and the helicopter subsequently rolled over. There were no mechanical malfunctions with the helicopter during the flight. The helicopter sustained substantial damage to its tailboom when it rolled.
Aircraft
- Registration
- N10009
- Reported as
- Texas Helicopter OH-13H/M74A
- Category
- Helicopter
- Serial number
- 79-032
- Airframe hours
- 5,347
- Engine
- Lycoming VO-435 SERIES, 260 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Operator
- Hendrickson Flying Service Inc
- Registered owner
- Hendrickson Flying Service Inc
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · July 10, 2010
- Departed
- IL93 · Creston, IL
- Destination
- IL93 · Creston, IL
- Airport
- IL93 · Hendrickson Flying Service
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
- 53
- Injuries
- Minor
- Certificates
- Flight instructor, Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane, Helicopter
- Medical
- Class 2, With waivers/limitations
- Last flight review
- December 10, 2010
- Seat
- Single
- Flight hours
- 8,772 total · 1,800 in this make and model · 8,674 as pilot in command · 150 in the last 90 days · 108 in the last 30 days · 9 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 180° at 6 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 82 °F, dew point 75 °F
- Altimeter
- 29.79 inHg
- Observed at
- RPJ, 10 nm away
Docket · 2
The files NTSB released with the investigation on August 11, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 607 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.
Other investigations on N10009 · 3
Matched to the same aircraft by N-number and date.