NTSB CAROL · Event
Event ANC67D0085
Registry · N9823M
FAA Aircraft Registry record.
Make / Model
MAULE M-4-210C
Year of manufacture
1965 · 2 years old at event
Engine
LYCOMING I0360 SER (180 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19651230
ADS-B equipped
Yes — Mode-S ADB55F
Registrant of record
KOELSCH BENJAMIN
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Historical record (pre-1982)
NTSB recorded this accident in the pre-1982 coded-field schema — structured fields rather than free-text narrative. Decoded codes use established NTSB single-letter taxonomies; cause factors remain verbatim pending the Form 6120.4 codebook lookup.
Aircraft
MAULE M4 · N9823M
Damage
Substantial
Craft type
Airplane
Classification
Accident
Light condition
Dawn
Weather
VMC
Phase of flight
C0
Operator type
D
Airport
MONTAQUE ISLAND
Kind of flying
B2
Weather at impact
Sky
CLEAR
Wind
045° / 4 kt
Temp
28° F
Aircraft history
Total time
532 hrs
Pilot
Certificate
Flight instructor (CFI)
Total hours
14,000
Age
49
Probable cause (from PRE1982.MDB)
T.STRUCK LOG,TOOK OFF,FURTHER DAMAGED ON LNDG.
Investigator remarks
TAKEOFF RUN SLOWED WHEN SKI BROKE THRU SNOW CRUS
Cause factors
- 64/C/35 C PILOT IN COMMAND SELECTED UNSUITABLE TERRAIN Cause
- 64/C/29 C PILOT IN COMMAND INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING Cause
- 88/K/94 K MISCELLANEOUS ACTS,CONDITIONS OVERLOAD FAILURE Joint factor
Decoded against the NTSB Form 6120.4 cause-factor codebook (ct_Pre1982 table). Each row shows the raw triplet, modifier (Cause / Factor / etc.), category, and specific code.
Source: NTSB pre-1982 historical archive. Docket
3 0163.
Source file
NTSB_1967_3_0163.txt.
Modern CAROL record 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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