ANC07LA090 · Cessna 150G
Cessna 150G · Accident: on ground/water collision with terrain/water during takeoff
From Kenai, AK to an unrecorded destination
Event
- NTSB case
- ANC07LA090
- 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
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- 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
- Visual Meteorological Cond
Cessna 150G
- Aircraft type
- Cessna 150
- 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
- N2981S
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Kenai, AKTo not recorded
- 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
- Takeoff · rejected takeoff
- 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
- On ground/water collision with terrain/water
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Pilot in command › Flaps, excessive
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The private pilot of the float-equipped airplane was taking off from a municipal float plane lake. He said during the takeoff roll the airplane did not accelerate as fast as normal, and once on step did not accelerate as anticipated. He aborted the takeoff, but the airplane would not stop in the remaining length of the lake. The pilot said he elected to hit the bank head-on rather than in a turn. The airplane traveled onshore 20-30 feet before nosing over. The pilot said when he exited the inverted airplane, the left float was draining what he thought was an excessive amount of water. He said he pumped the floats prior to departure, but felt that a leaking gasket may have filled the left float with water during the pretakeoff water taxi. An FAA air safety inspector who interviewed the pilot, said the pilot told him he had inadvertently left the flaps in the 40 degrees extended position during the takeoff roll. The airplane was not examined by the NTSB.
Probable cause
The pilot's excessive flap setting during takeoff.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ANC07LA090
- Event ID
- 20070905X01313
- Case number
- ANC07LA090
- 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, coordinates. 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: 64172f5fd43edcf56b7626fdcdaf06123c4607f17c48f50353b4bf8293868300; retrieved 2026-09-22T03:29:55.257Z.