ERA17LA270 · Pipistrel DOO Ajdovscina VIRUS SW
Pipistrel DOO Ajdovscina VIRUS SW · Accident: aerodynamic stall/spin on approach
From Immokalee Regional Airport (IMM) to Immokalee, FL (private airstrip)
Event
- NTSB case
- ERA17LA270
- 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
Pipistrel DOO Ajdovscina VIRUS SW
- Aircraft type
- Pipistrel Doo Ajdovscina VIRUS SW
- 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
- N811AW
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Immokalee Regional Airport (IMM), Immokalee, FLTo Immokalee, FL (private airstrip)
- Aircraft age
- About 1 year (built 2016)
- 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
- Approach · VFR go-around
- 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
- Aerodynamic stall/spin
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Tree(s)
- 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
- Aircraft › Aircraft oper/perf/capability
- Personnel issues › Task performance
Approximate · Coordinates from the NTSB case API, not marked as estimated; no uncertainty radius is established.
NTSB narrative
The private pilot was conducting a personal, local flight. He reported that he was attempting to land the motor glider on a 1,200-ft-long grass runway with 50 ft-tall trees at each end. After the airplane touched down on the first third of the runway, the pilot realized he was not going to be able to stop the glider within the remaining runway, so he disengaged the air brakes, aborted the landing, and attempted a go-around. During the go-around, the left wing dropped, the glider descended, and the left wing struck the ground. The glider then impacted trees and came to rest about 1,000 ft beyond the runway approach end, and it sustained substantial damage.
The pilot reported that there were no preaccident mechanical malfunctions or failures with the motor glider that would have precluded normal operation. Given the evidence, it is likely that, during the attempted go-around, the pilot failed to attain adequate airspeed, which resulted in an aerodynamic stall.
Probable cause
The pilot's failure to attain adequate airspeed during an attempted go-around, which resulted in an aerodynamic stall.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ERA17LA270
- Event ID
- 20170809X43204
- Case number
- ERA17LA270
- 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: c5881c8311cbebed55dd65b05d9404244f72a6fadd1d0f856c26faa3333fef54; retrieved 2026-09-16T05:41:08.012Z.