NTSB CAROL · Event
Event FTW91FA081
Registry · N1019M
FAA Aircraft Registry record.
Make / Model
MAULE MX-7-180A
Year of manufacture
1995
Engine
LYCOMING O&VO-360 SER (180 hp)
Seats / Engines
5 seats · 1 engine
Last airworthiness date
19950609
ADS-B equipped
Yes — Mode-S A00C0A
Registrant of record
BEAUDOIN BERNARD P
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
BINDING OF THE #2 EXHAUST VALVE (STUCK VALVE), AND FAILURE OF THE PILOT TO MAINTAIN ADEQUATE AIRSPEED, WHICH RESULTED IN AN INADVERTENT STALL. A FACTOR RELATED TO THE ACCIDENT WAS: THE FAILED EXHAUST MANIFOLD GASKET.
Factual narrative
THE PLT & PASSENGER WERE PARTICIPATING IN AN ACTIVITY TO COMPETE IN DROPPING PAPER SACKS OF FLOWER IN A CIRCLE ON THE GROUND AT A FLY-IN. AFTER THE PLT HAD JUST COMPLETED A LOW PASS, WITNESSES NOTED THE ENG BEGAN RUNNING ROUGH, THEN THE ACFT DESCENDED & CRASHED. AN EXAM OF THE WRECKAGE REVEALED THE ACFT HAD IMPACTED IN A STEEP DESCENT. THE PROP BLADES WERE EQUALLY DISTORTED & BOTH BLADES CONTAINED ROTATIONAL SCUFF MARKS. A TEARDOWN OF THE ENG REVEALED THE #2 CYLINDER HAD A BLOWN EXHAUST MANIFOLD GASKET & THAT ITS RESPECTIVE EXHAUST VALVE WAS STUCK. ALSO, HEAT DAMAGE WAS NOTED ON THE #4 CYLINDER, DUE TO ESCAPING EXHAUST GASES. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1991_FTW91FA081.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). 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 …
- 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…
- Embry-Riddle Scholarly Commons 2021 · Journal article (JAAER)
Analysis on the Negative Emotional, Physiological, and Cognitive Responses Elicited from of the Activation of a Stall Alarm
Failing to identify an aerodynamic stall can lead to the inability of an aircraft to sustain flight. To warn pilots of an impending or fully-developed stall, many aircraft have safety devices installe…
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