SEA94LA202 · Groce VANS RV-4
Groce VANS RV-4 · Accident: in flight collision with terrain/water during initial climb
From an unrecorded airport to UNKNOWN
Event
- NTSB case
- SEA94LA202
- 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
- Visual Meteorological Cond
Groce VANS RV-4
- Aircraft type
- Groce VANS RV-4
- 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
- N7GJ
- Operator
- Groce, John L. · private individual
- Onboard fatalities
- Unknown
- Route
- From not recordedTo UNKNOWN
- 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
- 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
- In flight 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
- Destroyed
Cause areas
- Pilot in command › Airspeed, not maintained
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
An airline customer service agent observed the aircraft during takeoff, noting that it was airborne at 10 to 15 feet above the ground and 'not really gaining altitude.' She did not witness the crash. The captain of a commuter flight noted that 'after rotation approx 25' or so, his left wing dipped downward, aircraft seemed under powered. It was hot, Density alt(itude) 5200' lite gusty winds.' The commuter captain did not see the aircraft crash. Witnesses noted that the airplane became airborne in the first quarter of the runway. During on-site inspection, FAA inspectors noted that the aft cockpit was loaded with camping gear, including a tent, campstove, six cans of food, a large clothing bag, camera, headset, and five or six jars, as well as an extensive collection of aviation literature. When the wreckage was inspected, no mechanical discrepancies were noted by FAA personnel.
Probable cause
AIRSPEED WAS NOT MAINTAINED AFTER TAKEOFF. A FACTOR WAS HIGH DENSITY ALTITUDE.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record SEA94LA202
- Event ID
- 20001206X02135
- Case number
- SEA94LA202
- 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: cd640ff1a1fb6f06819694d9daea853bf4a000612a6431f0ec0241eb327adc66; retrieved 2026-09-21T00:03:43.475Z.