- Date
- April 6, 2011, 13:55 local (20:55 UTC)
- Place
- Torrance, CA
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N9FKBell 47G
- Defining event
- Takeoff: Dynamic rollover
- Weather
- Visual (VMC) · Day
- Status
- Completed · report March 20, 2012
- Report
- Approved by Office Director
- NTSB office
- Western Pacific Region
- Parties
- FAA FSDO
- FAA report
- 20110406006399A
- Case key
- 78803
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 did not maintain adequate altitude during takeoff, which resulted in ground contact and a dynamic rollover.
Findings · 3
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
The helicopter pilot reported that he applied power and pitch for takeoff and lifted up about 2 to 3 feet while starting a pedal turn to the right. He said that the helicopter then abruptly started to turn hard to the right and that he then had no control over the helicopter, so he immediately lowered the collective to stop the rotation. When the helicopter touched down, it immediately rolled onto its right side, shattering the cabin bubble and the main rotor blades. An airport operations employee heard the noise and responded to assist the pilot. He said that the pilot told him that he was in a hover just above the ground and that he “was cleared for takeoff and it just went over.” No gusts were reported on the day of the accident. The pilot did not report any known preimpact mechanical discrepancies with the helicopter. It is likely that the pilot simultaneously performed a right-pedal turn while transitioning to forward flight at too low an altitude.
Factual narrative
On April 6, 2011, at 1355 Pacific daylight time, a Bell 47G helicopter, N9FK, sustained substantial damage when it impacted terrain following a loss of control during departure at Zamperini Field (TOA), Torrance, California. The private pilot, the sole occupant, received minor injuries. The owner/pilot was operating the helicopter under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed for the personal cross-country flight, which was originating at the time of the accident. A flight plan had not been filed. The pilot reported that he received clearance to take off. He applied power and pitch, and lifted up approximately 2 to 3 feet while starting a pedal turn to the right. He stated that the helicopter "abruptly started to turn right hard and he had no control over the helicopter." He immediately lowered the collective to stop the rotation. When the helicopter touched down, it immediately rolled onto its right side, shattering the cabin bubble and main rotor blades. Additionally, the fuselage was distorted and bent. An airport operations employee heard the noise and responded to assist the pilot. He said the pilot told him that he “was in a hover just above the ground. I was cleared for takeoff and it just went over.” The wind reported at 1357, at Torrance, was from 270 degrees at 8 knots; no wind gusts were reported during the 24-hour period on the day of the accident. The pilot did not report any known preimpact mechanical discrepancies with the helicopter.
Aircraft
- Registration
- N9FK
- Reported as
- Bell 47G
- Category
- Helicopter
- Serial number
- 1675
- Airframe hours
- 14,339
- Engine
- Franklin 6V350a, 235 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Rodriguez Danny
- Registered owner
- Rodriguez Danny
- Airworthiness certificate
- Special, Restricted (Special); Standard, Normal
- Last inspection
- Annual · August 13, 2010
- Departed
- TOA · Torrance, CA
- Destination
- HHR · Hawthorne, CA
- Flight plan
- Unknown
- Airport
- TOA · Zamperini Field
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
- 62
- Injuries
- Minor
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Without waivers/limitations
- Last flight review
- September 22, 2010
- Seat
- Left
- Flight hours
- 1,686 total · 686 in this make and model · 27 in the last 90 days · 10 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 270° at 8 knots
- Visibility
- 7 statute miles
- Lowest ceiling
- 8,000 ft broken
- Temperature
- 68 °F, dew point 54 °F
- Altimeter
- 29.97 inHg
- Observed at
- TOA
Docket · 3
The files NTSB released with the investigation on February 9, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.4 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.
Other investigations on N9FK · 1
Matched to the same aircraft by N-number and date.