NTSB CAROL · Event
Event WPR11CA118
Aircraft involved
Probable cause & findings
The pilot’s failure to properly secure the airplane prior to rotating the propeller by hand, resulting in inadvertent movement of the airplane and collision with a building.
Factual narrative
The pilot pulled the airplane out of the unheated hangar on a chilly morning, and used the propeller to rotate the engine several times. He set the parking brake, and started the airplane with the starter, but then the engine stopped. The battery would not turn the engine over again, so he decided to hand prop the engine. He primed it, left the parking brake on, set the throttle to idle, turned the master switch and magneto switches on, and spun the propeller. The engine started, but quit. He started it again by hand propping. He advanced the throttle to keep it running, but it quit. He applied carburetor heat, but did not reduce the throttle setting. He hand propped the engine once again and it went to a high rpm setting, and then the airplane began moving forward. The pilot reached in to try and retard the throttle, but was unsuccessful. He fell, and hit his face on the landing gear footstep, which fractured his right cheekbone and caused deep lacerations above his right eye. The airplane continued to move until it collided with a hangar, with both wings sustaining substantial damage. The pilot pulled the airplane out of the unheated hangar on a chilly morning and used the propeller to rotate the engine several times. He set the parking brake, and started the airplane with the starter, but then the engine stopped. The battery did not have sufficient charge to start the engine, so he decided to hand-prop the engine. He primed it, left the parking brake on, set the throttle to idle, turned the master switch and magneto switches on, and spun the propeller. The engine started but did not remain running. He started it again by hand propping. He advanced the throttle to keep it running, but again it did not remain running. He applied carburetor heat, but did not reduce the throttle setting. He hand-propped the engine once again and it went to a high rpm setting, and then the airplane began moving forward. The pilot reached in to try to retard the throttle, but was unsuccessful. He fell and hit his face on the landing gear footstep, which fractured his right cheekbone and caused deep lacerations above his right eye. The airplane continued to move until it collided with a hangar, with both wings sustaining substantial damage. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- C Aircraft-Aircraft handling/service-Parking/securing-Tie-down/mooring-Incorrect use/operation - C
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
Verbatim from NTSB's published report. Source file
NTSB_2011_WPR11CA118.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. Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- arXiv 2022 · arXiv preprint
AirTrack: Onboard Deep Learning Framework for Long-Range Aircraft Detection and Tracking
Detect-and-Avoid (DAA) capabilities are critical for safe operations of unmanned aircraft systems (UAS). This paper introduces, AirTrack, a real-time vision-only detect and tracking framework that res…
- Semantic Scholar 2017 · Article (Trials)
Effectiveness of two web-based cognitive bias modification interventions targeting approach and attentional bias in gambling problems: study protocol for a pilot randomised controlled trial
BackgroundDisordered gamblers have phenotypical and pathological similarities to those with substance use disorders (SUD), including exaggerated automatic cognitive processing of motivationally salien…
- Embry-Riddle Scholarly Commons 2014 · Conference paper
FAA Safety Seminar (Open to the General Public)
This seminar will focus on reducing the aviation accident rate through the enhancement of safety culture. Human factors influences on accident and incidents will also be discussed with an emphasis on …
- Embry-Riddle Scholarly Commons 2003 · Journal article (JAAER)
Desirable Faculty Qualifications as Assessed by Students in the Aeronautical Science Program at Embry-Riddle Aeronautical University
Over 89% of the sophomore aerodynamics students (182 out of 207) at Embry-Riddle Aeronautical University were surveyed during Spring Term 2003 to explore student preferences relative to instructor qua…
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