NTSB CAROL · Event
Event SEA86LA141
Aircraft involved
Factual narrative
THE PLT FELT A SUDDEN HARD JOLT WHILE IN CRUISE FLT. THE ACFT ASSUMED A NOSE LOW, LEFT WING DOWN ATTITUDE WHICH THE PLT WAS UNABLE TO CORRECT BY USE OF POWER AND CONTROL INPUTS. THE ACFT WAS AT A LOW ALTITUDE DUE TO WEATHER. THE ACFT IMPACTED THE WATER IN A LEFT WING DOWN, NOSE LOW ATTITUDE SHORTLY AFTER THE LOSS OF CONTROL. AFTER THE ACFT WAS RECOVERED IT WAS DISCOVERED THAT THE LEFT FLOAT HAD SEPARATED IN FLIGHT CAUSING A LOSS OF CONTROL. METALLURGICAL EXAMINATION REVEALED PRE-EXISTING FATIGUE CRACKING OF TWO STEEL MEMBERS. THE LOW TENSILE STRENGTH AND MARGINAL QUALITY OF THE STEEL CONTRIBUTED TO THE EARLY FAILURE OF THE FITTNG. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1986_SEA86LA141.txt.
Findings + structured fields enriched from FAA avall.mdb.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER)
A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
- NTSB Aircraft Accident Reports 2022 · Accident report
Loss of Control on Takeoff in Icing Conditions — Citation 560XL
Cessna Citation 560XL fatal takeoff icing accident, March 2018. Investigation of a Citation 560XL loss-of-control takeoff accident in icing conditions.
- Semantic Scholar 2021 · Article (Aviation)
ANALYSIS OF GENERAL AVIATION FIXED-WING AIRCRAFT ACCIDENTS INVOLVING INFLIGHT LOSS OF CONTROL USING A STATE-BASED APPROACH
Inflight loss of control (LOC-I) is a significant cause of General Aviation (GA) fixed-wing aircraft accidents. The United States National Transportation Safety Board’s database provides a rich source…
- NASA NTRS 2021 · Presentation
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
Abstract—We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
- NASA NTRS 2021 · Conference Paper
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
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