ERA24LA291 · Burkhart Grob Flugzeugbau G102 ASTIR CS
Burkhart Grob Flugzeugbau G102 ASTIR CS · Accident: loss of lift while maneuvering
From Post Mills Airport (2B9) to an unrecorded destination
Event
- NTSB case
- ERA24LA291
- 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
Burkhart Grob Flugzeugbau G102 ASTIR CS
- Aircraft type
- Grob G102
- 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
- N152SS
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Post Mills Airport (2B9), Post Mills, VTTo not recorded
- Aircraft age
- About 47 years (built 1977)
- 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
- Environmental issues › Conditions/weather/phenomena
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 of the glider took off under aerotow for a flight in the local soaring area. During the return trip to the airport, the pilot reported that the “good lift” in the area had weakened. The pilot then reported that while looking for an area of lift, he performed a turn over a ridge, which resulted in a loss of altitude. During one the pilot’s turns to find lift, one of the wingtips impacted a tree, and the glider subsequently impacted the forest canopy. After impacting trees, the glider came to rest about 30 ft above ground level. The pilot was rescued from the tree canopy five hours after the accident and was uninjured. The tree impacts resulted in the glider sustaining substantial damage to both wings. The pilot reported there were no preaccident mechanical malfunctions or failures that would have precluded normal operation.
Probable cause
An encounter with atmospheric conditions where the lift was not sufficient to maintain flight, resulting in collision with trees.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA24LA291
- Event ID
- 20240703194610
- Case number
- ERA24LA291
- 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, cause areas. 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: 6dd892898df768fab5465f61d0c6dcae6752ecd5e1f73909a34a8b7b918f3d26; retrieved 2026-09-16T19:00:18.582Z.