NTSB CAROL · Event
Event CHI08LA040
Registry · N947DM
FAA Aircraft Registry record.
Make / Model
ZIPLINE INTERNATIONAL INC P2 ZIP
ADS-B equipped
Yes — Mode-S AD2780
Registrant of record
ZIPLINE INTERNATIONAL INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's failure to assure that all of his tools were accounted for prior to takeoff which resulted in the foreign object jamming the control stick and the pilot's inability to maintain control of the airplane. A factor associated with the accident was the strong, gusty crosswind condition.
Factual narrative
On November 14, 2007, at 1158 central standard time, a Czech Aircraft Works Sport Cruiser, N947DM, collided with the runway following a loss of control on takeoff from the Waukegan Municipal Airport, Waukegan, Illinois. The pilot was not injured. The airplane was substantially damaged. The 14 CFR Part 91 personal flight was operating in visual meteorological conditions without a flight plan. The flight was originating at the time of the accident. The pilot taxied the airplane to the end of runway 23 (6,000 feet by 150 feet, concrete) where he performed an engine run-up. Upon takeoff the airplane began drifting to the right. The pilot applied left aileron and rudder, and the airplane started "banking hard right." He then applied full throttle and full left aileron, but the right bank angle kept increasing. The pilot reported he kept the nose of the airplane up by applying left rudder, but the airplane continued to lose altitude. The right wing then contacted the runway and the airplane came to rest after having completed a 360 degree turn. The pilot reported that prior to the flight he was working on the airplane and had used a magnetic block to magnetize a screwdriver. When finished, he set the block on the copilot seat and forgot about it. Following the accident the magnetic block was found lodged between the control stick and its mounting. The local winds were reported as being variable from 240 degrees to 310 degrees with gusts to 21 knots. The pilot reported the windsock showed the winds were from 270 degrees when he initiated his takeoff. The takeoff was being made on runway 23. Upon takeoff the airplane began drifting to the right. The pilot applied left aileron and rudder, and the airplane started "banking hard right." He then applied full throttle and full left aileron, but the right bank angle kept increasing. The pilot reported that he kept the nose of the airplane up by applying left rudder, but the airplane continued to lose altitude. The right wing then contacted the runway and the airplane came to rest after having completed a 360 degree turn. Prior to the flight the pilot was working on the airplane and had used a magnetic block to magnetize a screwdriver. When finished, he set the block on the copilot seat and forgot about it. Following the accident the magnetic block was found lodged between the control stick and its mounting. This resulted in restricted movement of the control stick. The local winds were reported as being variable from 240 degrees to 310 degrees with gusts to 21 knots. The pilot reported the windsock showed the winds were from 270 degrees when he initiated his takeoff. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2007_CHI08LA040.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- 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.
- 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.
- NASA NTRS 2021 · Conference Paper
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
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