WPR12CA431
2012-09-20 · McMinnville, Oregon, United States · Minor · 1 aircraft · Status: Completed
Airport KMMV
Aircraft involved
Probable cause & findings
The pilot's aggressive takeoff maneuver, which resulted in a loss of control.
Factual narrative
The pilot stated that after taking two other passengers on an hour-long sightseeing flight he made an approach and landing to the helipad. He was not satisfied with the landing and he lifted off the helipad to reposition and re land the helicopter. Once airborne the helicopter started spinning to the right, rising to about 50 feet, and pitching up. He rotated the throttle off, lowered the collective, and as the helicopter approached the ground, he pulled up on the collective. The low rotor rpm horn was sounding as they descended. The helicopter impacted the ground in a 30-degree left angle of bank, collapsing the left skid, and rolled over on its left side. All occupants egressed through the right cabin door. The pilot said that he may have pulled up too aggressively when attempting to reposition the helicopter, precipitating the loss of control. A Federal Aviation Administration inspector examined the helicopter and found no preaccident mechanical malfunctions or failures that would have precluded normal operations. The pilot stated that after taking two passengers on a sightseeing flight he made an approach and landing to the helipad. However, he was not satisfied with the landing and he lifted the helicopter off the helipad, intending to reposition and re-land the helicopter. After the helicopter became airborne again, it started spinning to the right and pitched up, rising to about 50 feet. The pilot reduced the throttle setting, lowered the collective, and descended. As the helicopter approached the ground, the pilot pulled up again on the collective. The low rotor rpm horn was sounding as they descended. The helicopter impacted the ground in a 30-degree left bank angle, which collapsed the left skid, and the helicopter rolled over on its left side. All occupants egressed through the right cabin door. The pilot said that he may have pulled up too aggressively during his attempt to reposition the helicopter, resulting in the loss of control. Postaccident examination of the helicopter revealed no evidence of preaccident mechanical malfunctions or failures that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Pitch control-Not attained/maintained - C
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Lateral/bank control-Not attained/maintained - C
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
Verbatim from NTSB's published report. Source file
NTSB_2012_WPR12CA431.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
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Related research
Matched on aircraft type or causal vocabulary (loss of control). All research papers
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER) A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- SKYbrary (Eurocontrol) 2024 · SKYbrary article Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
- Semantic Scholar 2024 · Article (International Conference on Networking and Services) Risk Assessment of Loss of Control In-Flight Trajectories for Urban Air Mobility Safety
In Urban Air Mobility (UAM), maintaining a minimum separation between aircraft is a safety requirement, which becomes challenging amidst congested air traffic and off-nominal conditions, such as Loss …
- NTSB Aircraft Accident Reports 2022 · Accident report Loss of Control on Takeoff in Icing Conditions — Citation 560XL
Cessna Citation 560XL fatal takeoff icing accident, March 2018. Investigation of a Citation 560XL loss-of-control takeoff accident in icing conditions.
- Semantic Scholar 2021 · Article (Aviation) ANALYSIS OF GENERAL AVIATION FIXED-WING AIRCRAFT ACCIDENTS INVOLVING INFLIGHT LOSS OF CONTROL USING A STATE-BASED APPROACH
Inflight loss of control (LOC-I) is a significant cause of General Aviation (GA) fixed-wing aircraft accidents. The United States National Transportation Safety Board’s database provides a rich source…
- NASA NTRS 2021 · Presentation Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
Abstract—We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.