NTSB CAROL · Event
Event SEA85LA108
Registry · N5313Y
FAA Aircraft Registry record.
Make / Model
HUGHES 369D
Year of manufacture
1979 · 6 years old at event
TCDS
H3WE · MD HELICOPTERS INC (MDHI)
Engine
ALLISON 250 SER 250HP (250 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19790310
ADS-B equipped
Yes — Mode-S A6B6FC
Registrant of record
SELEY CORP
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Factual narrative
AFTER DEPARTURE THE PLT STATED HE SELECTED GEAR UP. HE STATED THAT THE GEAR INDICATOR LIGHTS INDICATED THAT ONE GEAR AS STILL IN THE DOWN POSITION. HE SAID HE RECYLCLED THE GEAR AND THEN CHECKED THE GEAR INDICATOR BLUBS. THE PILOT SAID HE THEN HAND PUMPED THE GEAR UNTIL HE BELIEVED THE GEAR TO THE BE IN THE UP POSITION. THE ACFT TOUCHED DOWN ON THE WATER AND THEN NOSED OVER AS THE GEAR WAS STILL DOWN. THE FLOAT PLATE WAS FOUND TO BE INSTALLED BACKWARDS. FAA INSPECTORS TALKED TO FOUR WITNESSES WHO SAID THAT ALL GEAR WAS IN THE DOWN POSITION. THE LEFT GEAR CAN BE CHECKED VISUALLY FROM THE COCKPIT. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1985_SEA85LA108.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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