NTSB CAROL · Event
Event CHI92LA236
Registry · N30MT
FAA Aircraft Registry record.
Make / Model
CESSNA U206G
Year of manufacture
1977 · 15 years old at event
TCDS
A4CE · CESSNA
Engine
CONT MOTOR IO 520 SERIES (285 hp)
Seats / Engines
6 seats · 1 engine
Last airworthiness date
19771128
ADS-B equipped
Yes — Mode-S A31E1E
Registrant of record
MCNAMARA J KEVIN
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
FAILURE OF THE CARBURETOR MIXTURE CONTROL, RESULTING IN LOSS OF ENGINE POWER. A FACTOR RELATED TO THE ACCIDENT WAS: LACK OF COMPLIANCE WITH MARVEL-SCHEBLER SERVICE BULLETIN (SB) #A1-78.
Factual narrative
DRG A LNDG GO-AROUND, THE ENG BGN RUNNING ROUGH, THEN LOST PWR. AN ATTEMPT WAS MADE TO MAKE AN EMERG LNDG ON A ROAD ADJACENT TO THE ARPT, BUT THE ACFT HIT A FENCE & AN EMBANKMENT BEFORE REACHING IT. AN INV REVEALED THE LOSS OF POWER WAS DUE TO A MALFUNCTION OF THE ENG'S MARVEL-SCHEBLER MODEL HA-6 CARBURETOR (CARB). EXCESSIVE WEAR OF THE SHAFT RETAINING SCREW ALLOWED MISPOSITIONING OF THE CARB'S ROTARY MIXTURE CONTROL (PN 242-541) AND BLOCKAGE OF FUEL FLOW. IN SEP 78, MARVEL-SCHEBLER/TILLOTSON (ORIGINAL MANUFACTURER OF THE CARB) ISSUED SVC BULLETIN (SB) #A1-78, BUT IT HAD NOT BEEN ACCOMPLISHED. THE SB PROVIDES FOR INSTLN OF A SPRING RETAINER (PN 55-A239) TO COUNTERACT END-PLAY WEAR ON THE MIXTURE CONTROL ASSEMBLY & RETAINING SCREW DUE TO VIBRATION. THE SPRING RETAINER ALSO SERVES AS AN ADNL MEANS OF RETAINING THE ROTARY MIXTURE CONTROL, EVEN IF THE EXISTING SHAFT RETAINING SCREW IS WORN OR BKN. THE ENG HAD A TOTAL FLT TIME OF 1065 HRS & 27 HRS SINCE THE LAST INSPN. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1992_CHI92LA236.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 (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 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…
- Semantic Scholar 2022 · Article (Journal of Safety Research)
Go-around accidents and general aviation safety.
INTRODUCTION Changes in General Aviation (GA) accident rates, specifically in the go-around phase, are examined by comparing the number of accidents, the proportion of fatal accidents, and the proport…
- Semantic Scholar 2021 · Article (Aerospace)
Classification and Analysis of Go-Arounds in Commercial Aviation Using ADS-B Data
Go-arounds are a necessary aspect of commercial aviation and are conducted after a landing attempt has been aborted. It is necessary to conduct go-arounds in the safest possible manner, as go-arounds …
- NASA NTRS 2021 · Accepted Manuscript (Version with final changes)
Go-Around Criteria Refinement for Transport Category Aircraft
Presently, airline pilots are trained to go around if, when lower than 500 ft above the ground, they are outside of a handful of parameters such as airspeed, position, and rate of descent.
- NASA NTRS 2019 · Conference Paper
Validation of Proposed Go-Around Criteria Under Various Environmental Conditions
This paper evaluates the effects of environmental conditions on touchdown performance under varying approach states and validates proposed go-around criteria developed using data from a previously con…
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