NTSB CAROL · Event
Event CEN22LA302
Registry · N23RS
FAA Aircraft Registry record.
Make / Model
SIWIK RONALD A PITTS SPECIAL S-1
Year of manufacture
1981 · 41 years old at event
Engine
LYCOMING AEIO-360 SER (180 hp)
Seats / Engines
1 seats · 1 engine
Last airworthiness date
19820625
ADS-B equipped
Yes — Mode-S A207AF
Registrant of record
PACOUREK JOHN R
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot’s failure to maintain airplane control during landing, which resulted in a runway excursion and nose over. Contributing to the accident was the pilot’s inadequate preflight inspection and the pilot’s lack of flight control system knowledge.
Factual narrative
The pilot reported that during landing touchdown with all three wheels “down,” and the airplane “tracking fine,” he removed his feet from the lower rudder pedal bars to apply braking via the upper braking pedal bars. The pedals then fell rearward toward the pilot and his right foot got wedged between the lower rudder pedal bar and the upper braking pedal bar. The pilot reported this action caught him by surprise and he applied “heavy” right rudder, thinking it was braking application. The airplane departed the right side of the runway, nosed over, and came to rest inverted in the grass next to the runway. The airplane sustained substantial damage to the top right wing and the empennage. The pilot reported there were no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot reported that he had recently purchased the airplane and did not know that the rudder pedal return springs were not installed. The investigation revealed that the airplane was previously modified for aerobatic competition with the addition of a large rudder and that due to cockpit spacing limitations, the rudder pedal return springs could not be installed. The pilot concluded that the accident could have been prevented by performing a “very thorough” inspection and understanding all the modifications made to the airplane before flying it. 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).
- — Personnel issues-Task performance-Inspection-Preflight inspection-Pilot
- — Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot
- — Aircraft-Aircraft systems-Flight control system-Rudder control system-Inadequate inspection
- — Personnel issues-Experience/knowledge-Knowledge-Knowledge of equipment-Pilot
- — Personnel issues-Action/decision-Action-Incorrect action performance-Pilot
Verbatim from NTSB's published report. Source file
NTSB_2022_CEN22LA302.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Beyond the agency record
Search this event elsewhere.
Pre-filled searches into the sources where news + community discussion of aviation events lives. External sources are reported, not agency. Treat them as signal that something happened, not as fact about what happened.
Entity-clustered aviation events in the press — last 24 hr + 30-day archive.
Official agency record + docket.
Investigative docket: factual reports, photos, transcripts.
Long-running aviation incident database (Flight Safety Foundation).
Community NTSB synthesis blog — often has photos and witness reports.
Gold-standard aviation incident blog.
Aviation industry news search.
GA pilot forum — informed but rumor-prone.
GA pilot subreddit search.
Tail-number page — flight history (free tier limited).
AOPA Air Safety Institute search.
Mainstream press coverage. Recent events only.
Privacy-preserving news search.
External links open in a new tab. We don't ingest their content; we deep-link search queries.
Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (stall, runway excursion). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- NASA NTRS 2026 · Conference Paper
Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Runway Excursion — SKYbrary Knowledge Base
SKYbrary runway excursion review — RE-OE (overruns) + RE-LO (lateral). Risk drivers: long landing, high approach speed, contaminated surface, tailwind, mis-set autobrakes.
- arXiv 2023 · arXiv preprint
Automating Bird Diverter Installation through Multi-Aerial Robots and Signal Temporal Logic Specifications
This paper tackles the task assignment and trajectory generation problem for bird diverter installation using a fleet of multi-rotors.
- arXiv 2023 · arXiv preprint
Variation of Critical Crystallization Pressure for the Formation of Square Ice in Graphene Nanocapillaries
Two-dimensional square ice in graphene nanocapillaries at room temperature is a fascinating phenomenon and has been confirmed experimentally.
- arXiv 2023 · arXiv preprint
Polycrystallinity enhances stress build-up around ice
Damage caused by freezing wet, porous materials is a widespread problem, but is hard to predict or control. Here, we show that polycrystallinity makes a great difference to the stress build-up process…
- arXiv 2022 · arXiv preprint
Enhanced Prediction of Three-dimensional Finite Iced Wing Separated Flow Near Stall
Icing on three-dimensional wings causes severe flow separation near stall. Standard improved delayed detached eddy simulation (IDDES) is unable to correctly predict the separating reattaching flow due…
Browse the full corpus — academia portal ↗