ERA10CA291 · Schweizer SGS 1-36
NFSS Schweizer SGS 1-36 · Accident: loss of lift while maneuvering
From Herlong Airport (HEG) to Herlong Airport (HEG)
Event
- NTSB case
- ERA10CA291
- 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
Schweizer SGS 1-36
- Aircraft type
- Schweizer SGS-1
- 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
- N36204
- Operator
- NFSS
- Onboard fatalities
- Unknown
- Route
- From Herlong Airport (HEG), Jacksonville, FLTo Herlong Airport (HEG), Jacksonville, FL
- 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
- Maneuvering
- Defining eventThe 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 lift
- 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
- Personnel issues › Action/decision
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot stated that his glider was towed to 3,000 feet above ground level (AGL) for a local soaring flight. He climbed the glider to 6,000 feet in a training area about 13 miles from the departure airport, where he "encountered sink." The pilot then obtained a landing clearance at an airport about 8 miles from his position, but the glider continued to sink, and struck an airport perimeter fence short of the landing runway. The off-airport landing resulted in substantial damage to the wings and fuselage structures. According to the glider's Pilot Operating Manual, the maximum glide ratio at maximum gross weight was 31:1. The pilot reported there were no pre-accident mechanical malfunctions or failures of the glider.
Probable cause
The glider pilot’s delayed decision to divert following a loss of thermal lift.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA10CA291
- Event ID
- 20100601X10226
- Case number
- ERA10CA291
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
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: 138071e416c6591965277a9462a241437c7bc7e4a6cfb59d00e51ad8e5928b7b; retrieved 2026-09-15T14:16:54.346Z.