SEA99TA051 · I.C.A. Brasov IS-28B2
I.C.A. Brasov IS-28B2 · Accident: in flight collision with object on approach
Event
- NTSB case
- SEA99TA051
- 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
- Government
- 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
I.C.A. Brasov IS-28B2
- Aircraft type
- I C A Brasov IS-28
- 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
- N843
- Operator
- Unknown
- 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
- Public Aircraft
- 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 pattern final
- 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 object
- 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
- Wire, transmission
- 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
- Copilot/second pilot › Clearance, not maintained
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot-in-command reported that during the currency flight for the second pilot, the second pilot deployed the spoilers and the glider started to descend too soon while on final approach. The PIC stated that he shoved the spoilers closed and looked for the power lines that were near the approach end of the runway. The glider passed over the tops of trees, but did not clear the power lines. The glider collided with the upper power lines which slid up and over the canopy, breaking the Plexiglas over the aft seat. The second pilot was able to maintain pitch and roll in a level attitude as the glider dropped to the ground and landed hard on the main gear. Both pilots reported that they were aware of the power lines at this end of the runway. The PIC stated that he should have reminded the second pilot about the power lines, but didn't. The second pilot stated that he had never landed on this runway before and thought that the power lines were further from the end of the runway. He also thought that he might have been distracted by the tow plane which was landing on the parallel airstrip.
Probable cause
The second pilot did not maintain clearance from power lines. The pilot-in-command did not adequately supervise the second pilot, and the second pilot's diverted attention and lack of familiarity with the geographic area were factors.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record SEA99TA051
- Event ID
- 20001205X00573
- Case number
- SEA99TA051
- 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: f513c2fa31fc524d9228033ca084d3cfe5f48e837c6ec13ee79a910522c7baf7; retrieved 2026-09-18T21:21:16.424Z.