NTSB CAROL · Event
Event ANC93LA109
Registry · N9872M
FAA Aircraft Registry record.
Make / Model
MAULE M-4-210C
Year of manufacture
1967 · 26 years old at event
Engine
CONT MOTOR IO-360 SER (300 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19670707
ADS-B equipped
Yes — Mode-S ADC7CF
Registrant of record
BUTH ELIZABETH
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
THE PILOT IN COMMAND'S IMPROPER TAXI SPEED. A FACTOR IN THE ACCIDENT WAS THE ROUGH WATER.
Factual narrative
On July 2, 1993, at 1000 Alaska daylight time, a float equipped Maule M4 airplane, N9872M, registered to and operated by the pilot in command, nosed over while taxiing on Char Lake, approximately 20 miles southwest of Iliamna, Alaska. The private certificated pilot and one passenger, the sole occupants, were not injured and the airplane sustained substantial damage. The personal flight, operating under 14 CFR Part 91, last departed Port Alsworth and the destination was Char Lake. No flight plan was filed and visual meteorological conditions prevailed. During a telephone interview, the pilot in command told the NTSB investigator in charge that he was performing a downwind taxi when the left float tucked beneath the water causing the airplane to roll inverted. DURING THE STEP TAXI THE FLIGHT ENCOUNTERED ROUGH WATER AND THE AIRPLANE NOSED OVER. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1993_ANC93LA109.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 2025 · arXiv preprint
NMPC-based Unified Posture Manipulation and Thrust Vectoring for Fault Recovery
Multi-rotors face significant risks, as actuator failures at high altitudes can easily result in a crash and the robot's destruction.
- NASA NTRS 2019 · Technical Memorandum (TM)
Threshold Assessment of Gear Diagnostic Tools on Flight and Test Rig Data
A method for defining thresholds for vibration-based algorithms that provides the minimum number of false alarms while maintaining sensitivity to gear damage was developed.
- NASA NTRS 2019 · Technical Memorandum (TM)
Investigation of Spiral Bevel Gear Condition Indicator Validation via AC-29-2C Combining Test Rig Damage Progression Data with Fielded Rotorcraft Data
This is the final of three reports published on the results of this project. In the first report, results were presented on nineteen tests performed in the NASA Glenn Spiral Bevel Gear Fatigue Test Ri…
- NASA NTRS 2019 · Contractor Report (CR)
An Evaluation of an Analytical Simulation of an Airplane with Tailplane Icing by Comparison to Flight Data
This report presents the assessment of an analytical tool developed as part of the NASA/FAA Tailplane Icing Program. The analytical tool is a specialized simulation program called TAILSM4 which was de…
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