SEA92LA047 · KNA,KEN,DAC,WEL TERN SAILPLANE TERN SAILP
KNA,KEN,DAC,WEL TERN SAILPLANE TERN SAILP · Accident: loss of control in flight during initial climb
Event
- NTSB case
- SEA92LA047
- 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
- 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
KNA,KEN,DAC,WEL TERN SAILPLANE TERN SAILP
- Aircraft type
- Kna Ken Dac Wel TERN SAILPLANE
- Category
- Glider
- 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
- N8000Z
- Operator
- J.Marshall,g.Oswald,h.Hoglan
- Onboard fatalities
- Unknown
- Route
- From not recordedTo 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
- 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 › Aircraft preflight, inadequate
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
DURING THE INITIAL TAKEOFF ROLL THE TERN SAILPLANE PITCHED NOSE UP AND THE PILOT WAS UNABLE TO MAINTAIN CONTROL. THE PILOT RELEASED FROM THE TOW AIRCRAFT BUT THE SAILPLANE HAD BEGUN TO SPIN AND IMPACTED THE GROUND SHORTLY THEREAFTER. THE SAILPLANE WAS FOUND TO BE EQUIPPED WITH ONLY A CG TOW ATTACH POINT WHICH IS USED FOR VEHICLE TOW LAUNCHES AND IS LOCATED AFT OF THE NOSE UNDER THE COCKPIT. THE SAILPLANE DID NOT POSSESS AN AERO TOW ATTACH POINT MOUNTED ON THE NOSE AND USED FOR AIRCRAFT LAUNCHES. THE PILOT REPORTED 557 HOURS OF FLIGHT EXPERIENCE BUT ONLY 15 HOURS WERE IN GLIDERS WITH NO TIME LOGGED IN THE MAKE/MODEL OF THE ACCIDENT AIRCRAFT.
Probable cause
THE PILOT'S INADEQUATE PREFLIGHT OF THE SAILPLANE. FACTORS CONTRIBUTING TO THE ACCIDENT WERE IMPROPER TOW EQUIPMENT AND LACK OF TOTAL GLIDER EXPERIENCE.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record SEA92LA047
- Event ID
- 20001211X14185
- Case number
- SEA92LA047
- 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: e024d870dda22a0b6a5b89b087d33c0944a41d52003662c9166e65282ac5ce0a; retrieved 2026-09-21T23:21:02.027Z.