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BFO93FA030 · American General Aircraft AG5B

18 Feb 1993 · Vergennes, VT, United States

American General Aircraft AG5B · Accident: in flight encounter with weather en route

From Floyd Bennett Memorial Airport (GFL) to Lake Placid Airport (LKP)

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Event

NTSB case
BFO93FA030
Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
Accident
InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
Completed
API-reported fatalities
1 · all aircraft and ground
Ground fatalities
0
OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
General aviation
WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
Instrument Meteorological Cond

American General Aircraft AG5B

Category
Airplane
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
N1192Z
Onboard fatalities
Unknown
Route
From Floyd Bennett Memorial Airport (GFL), Glens Falls, NYTo Lake Placid Airport (LKP), Lake Placid, NY
Aircraft age
Not recorded
Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
Part 91: General Aviation
Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
En route · cruise
First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
In flight encounter with weather
Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
Visual flight rules (VFR) flight into instrument meteorological conditions (IMC)
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Destroyed

Cause areas

  • Pilot in command › Altitude, not maintained
  • Pilot in command › Spatial disorientation
  • Pilot in command › VFR flight into imc, continued

Approximate · Estimated position: the centre of Vergennes, VT, the place the record names. Not the accident site.

NTSB narrative

ON A FLIGHT FROM GLENN FALLS TO LAKE PLACID, NY, THE NON INSTRUMENT RATED PILOT ENCOUNTERED DETERIORATING WEATHER. ATC DATA SHOWED THIS OCCURRED OVER MOUNTAINOUS TERRAIN AT ABOUT 1517 EST NEAR BURLINGTON, VT. THE PILOT ELECTED TO RETURN TO GLENN FALLS. AT ABOUT 1521, HE TOLD THE CONTROLLER HE HAD LAKE CHAMPLAIN IN VIEW. THE LAKE WAS MOSTLY FROZEN OVER WITH APRX 3 FT OF SNOW ON THE SURFACE. ABOUT 5 MIN LATER, RADAR SERVICE WAS TERMINATED, AND THE PILOT ACKNOWLEDGED. NO FURTHER TRANSMISSIONS BY THE PILOT WERE RECEIVED. WRECKAGE WAS FOUND ON THE FROZEN SURFACE OF LAKE CHAMPLAIN NEAR THE VERMONT SHORE. AN EXAM REVEALED THE AIRPLANE HAD IMPACTED THE ICE IN A RIGHT WING LOW ATTITUDE. IT WAS EXTENSIVELY DAMAGED, BUT NO PREIMPACT ANOMALIES OF THE AIRFRAME OR ENGINE WERE FOUND. A WITNESS ON THE NEW YORK LAKE SHORE SAW AN AIRPLANE AT ABOUT THE TIME OF THE ACCIDENT, IN A STEEP LEFT TURN AT ABOUT 250 FT AGL. HE STATED HE LOST SIGHT OF THE AIRPLANE DUE TO THE BAD WEATHER. HE ALSO STATED THAT AT THE TIME HE SAW THE AIRPLANE, A SEVERE BLIZZARD WAS MOVING ACROSS THE AREA AND IT LASTED ABOUT 15 MIN.

Probable cause

VFR FLIGHT BY THE PILOT INTO INSTRUMENT METEOROLOGICAL CONDITIONS (IMC), AND HIS FAILURE TO MAINTAIN SUFFICIENT ALTITUDE OR CLEARANCE FROM SNOW COVERED TERRAIN AFTER BECOMING SPATIALLY DISORIENTED IN WHITEOUT CONDITIONS. THE ADVERSE WEATHER AND SNOW COVERED TERRAIN WERE RELATED FACTORS.

Verbatim NTSB analysis and probable cause from the NTSB dataset

Sources

NTSB record BFO93FA030
Event ID
20001211X11782
Case number
BFO93FA030
Dataset
historical-pre2008
Source SHA-256
89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
  • Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
  • Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
  • The date is the local date, which is the same as the UTC date the NTSB stores.
  • API snapshot SHA-256: ffefd5f2a141e1e99475722c35761971464af4498beca10f77f78af54b6d772d; retrieved 2026-09-21T00:42:12.299Z.