NTSB CAROL · Event
Event BFO89DID01
Aircraft involved
Probable cause & findings
THE PILOT/BUILDERS IMPROPER INSTALLATION OF THE RUDDERVADOR AND THE PILOT'S IMPROPER RECOVERY FROM A BOUNCED LANDING. A CONTRIBUTING FACTOR WAS THE FAILURE OF THE FAA TO DETECT THE FLAW DURING THE CERTIFICATION OF THE AIRCRAFT.
Factual narrative
THE ACCIDENT OCCURRED ON THE MAIDEN TEST FLIGHT OF THE RECENTLY CERTIFICATED HOMEBUILT ACFT. THE PLT/BUILDER REPORTED NO PROBLEMS DURING HIGH SPEED TAXI RUNS. AFTER TAKEOFF THE PLT ENCOUNTERED PROBLEMS AT SLOW SPEEDS WHICH DECREASED AS AIRSPEED INCREASED. DURING LANDING, THE ACFT STALLED HIGH AND BOUNCED TWICE ON THE RWY. THE PLT INITIATED A GO-AROUND AND DURING CLIMB OUT WAS UNABLE TO DECREASE PITCH TO GAIN AIRSPEED. THE ACFT CRASHED INTO TREES NEAR THE RWY. THE PLT DESIGNED AND BUILT THE ACFT WITH THE EXCEPTION OF THE DAVIS MIXING UNIT WHICH CONTROLS PITCH AND RUDDER INPUT TO THE RUDDERVADOR. THE DESIGN PLANS CALLED FOR 9 DEGS PITCH UP TRAVEL AND 8 DEGS PITCH DOWN TRAVEL. INVESTIGATION REVEALED THE RUDDERVADOR HAD BEEN INSTALLED WITH 12.5 DEGS NOSE UP TRAVEL AND 4.5 DEGS NOSE DOWN TRAVEL, THUS LIMITING THE PLTS ABILITY TO LOWER THE NOSE DURING CLIMB. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1989_BFO89DID01.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 (stall, go-around). 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 …
- NASA NTRS 2025 · Conference Paper
A Training Study to Improve Monitoring During A Go-Around
As part of an FAA program to improve go-around (GA) safety, we were asked to determine if we could improve the performance of the Pilot Monitoring (PM) during a GA maneuver.
- Flight Safety Foundation 2024 · FSF / AeroSafety World
Go-Around Safety Forum Findings
Foundation Go-Around Safety Forum technical findings — examines why pilots fail to execute go-arounds when criteria are met (stabilized approach gate not met, energy state out of envelope, traffic con…
- 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…
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