Lake Clark Flying Service Robertson C-U206F accident
Robertson C-U206F · Accident: loss of control in flight during initial climb
From NEAR NONDALTON, AK to Z30 · PORT ALSWORTH, AK
Event
- NTSB case
- ANC82FA091
- 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
- 4 · 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
- Charter & commuter
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Robertson C-U206F
- Aircraft type
- Robertson C-U206F
- 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
- N33249
- Operator
- Lake Clark Flying Service
- Onboard fatalities
- Unknown
- Route
- From NEAR NONDALTON, AKTo Z30 · PORT ALSWORTH, AK
- 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 135: Air Taxi & Commuter
- 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
- Initial climb
- 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
- Loss of control in flight
- 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 › Judgment, poor
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
SHORTLY AFTER TAKEOFF FROM HUDSON LAKE THE LEFT WINGTIP CONTACTED THE WATER CAUSING THE ACFT TO CARTWHEEL. THE ACFT CAME TO REST INVERTED & FLOATED FOR A SHORT TIME BEFORE SINKING. A WITNESS REPORTED THE WAVES ON THE LAKE WERE AT LEAST 4 FT HIGH & BREAKING OVER THE FLOATS, & THE WX WAS THE WORST HE HAS SEEN SINCE ARRIVING IN LATE MAY OF 1982. THE WITNESS REITERATED GALE FORCE WINDS & HEAVY RAIN. HE ALSO STATED THE WAVES IN THE COVE WHERE THE TAKEOFF STARTED WERE OPPOSITE TO THE DIRECTION OF TAKEOFF & THE WAVES WERE NOT A TRUE INDICATION OF THE WIND DIRECTION. THE WAVES WERE ALMOST 90 DEG DIFFERENT THAN THE WAVES IN THE CENTER OF THE LAKE. HE SAID IT WAS DIFFICULT TO TELL WHEN THE ACFT GOT ON STEP BECAUSE IT WAS BOUNCING AROUND BADLY & THE WATER WAS HITTING THE STRUTS. THE ONLY PERSON HE COULD SEE WEARING ANY FLOTATION DEVICE WAS THE PLT. ALL THE LIFE VESTS WERE LOCATED UNDER EACH PASSENGER SEAT SECURED IN A POUCH BY METAL TWISTS FASTENERS.
Verbatim NTSB analysis from the NTSB dataset
Sources
NTSB record ANC82FA091
- Event ID
- 20020917X04211
- Case number
- ANC82FA091
- 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: eb62814f5ab110d3c2a6cd9d81d04906c91cd4cae17e932b5d5c8d96642cd79f; retrieved 2026-09-18T14:32:18.864Z.