CEN21LA395 · Klapp Peter A KLAPP KR-2S
Klapp Peter A KLAPP KR-2S · Accident: loss of control in flight while maneuvering
Event
- NTSB case
- CEN21LA395
- 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
- 1 · 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
Klapp Peter A KLAPP KR-2S
- Aircraft type
- Klapp Peter KLAPP KR-2S
- Category
- Airplane
- 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
- N729PK
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From not recordedTo not recorded
- Aircraft age
- About 2 years (built 2019)
- 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 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
- Aircraft › Aircraft oper/perf/capability
- Not determined › Not determined
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 was returning the amateur-built airplane to the airport shortly after departure. The pilot of another airplane in the area reported that he heard the accident pilot announce that he was returning to the airport due to an unspecified canopy problem. The accident airplane subsequently pitched nose down into a small lake near the airport.
Postaccident examination of the recovered components found no anomalies. Portions of the canopy system were recovered, including the left hinge, but the right hinge and latching mechanism were not recovered. It is possible the left or right latching mechanism, which operated independently of each other, failed, or became disengaged; however, no determination could be made regarding the condition of the canopy at the time the pilot communicated the unspecified canopy issue.
It is also possible that an open canopy could have affected the airplane’s flight performance. However, due to the unique nature of the amateur-built airplane, the flight control and performance effects of a potentially open canopy during flight could not be quantified.
Based on the available evidence, the accident was the result of a loss of control for a reason that could not be determined.
Probable cause
A loss of airplane control for a reason that could not be determined based on available information.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN21LA395
- Event ID
- 20210903103795
- Case number
- CEN21LA395
- 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: c0aeedf1a0db3b370630445800ddd125b6dfbcae1318f838549380f9a16c2dc8; retrieved 2026-09-15T07:33:47.867Z.