# NTSB CHI07CA228: Flight Design Ctsw, N377CT, Oshkosh, WI, July 24, 2007

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: July 24, 2007, 10:46 local (15:46 UTC)
- Place: Oshkosh, WI
- Coordinates: 43.984443, -88.556945
- Nearby events: https://openairdocs.org/map.md?lat=43.9844&lon=-88.5569&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 31, 2007
- Report: Approved by Office Director
- Parties: Milwaukee, Wisconsin FSDO
- NTSB case key (mKey): 66537
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI07CA228
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66537/pdf
- Page: https://openairdocs.org/ntsb/CHI07CA228

## Probable cause

The pilot's failure to maintain adequate airspeed during landing which resulted in an inadvertent stall and subsequent impact with the ground.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - in flight, landing
  - airspeed - not maintained, pilot in command (cause)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, landing
  - terrain condition - runway

## Analysis

The airplane was damaged during landing.  The airplane was landing at the annual Experimental Aviation Administration Airventure fly-in.  The pilot reported that he was cleared to land on runway 18R and when he was about 3 feet above the ground the controller advised that he needed to extend to the blue dot.  The pilot stated that he reacted and the airplane ballooned up 25 to 30 feet and the airplane stalled.  He stated that a "tiny bit" of throttle would have been all that was required to extend to the blue dot and "all would have been well."  The pilot reported no mechanical failure or malfunction of the airplane.

## Factual narrative

The airplane was damaged during landing.  The airplane was landing at the annual Experimental Aviation Administration Airventure fly-in.  The pilot reported that he was cleared to land on runway 18R and when he was about 3 feet above the ground the controller advised that he needed to extend to the blue dot.  The pilot stated that he reacted and the airplane ballooned up 25 to 30 feet and the airplane stalled.  He stated that a "tiny bit" of throttle would have been all that was required to extend to the blue dot and "all would have been well."  The pilot reported no mechanical failure or malfunction of the airplane.

## Aircraft

- Registration: [N377CT](https://openairdocs.org/aircraft/N377CT), registered now, S/N 06-01-11, built 2006 (OpenAirDocs)
- Reported make and model: Flight Design CTSW
- Registry model: [Flight Design CTSW](https://openairdocs.org/model/flight-design-ctsw) (registry code 0600001) (OpenAirDocs)
- Registry engine: [Rotax 912ULS series](https://openairdocs.org/engine/rotax-912uls-series) (registry code 55572, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: 06-01-11
- Engines: Rotax 912 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Special, Special light-sport (Special)
- Departed: PWK, CHICAGO/PROSPEC, IL
- Destination: OSH, Oshkosh, WI

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 72; injuries: none; private; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3; flight hours: 5,620 total, 210 in this make and model

## Weather

- Conditions: Visual (VMC), Day

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 20070724020029A](https://openairdocs.org/incident/20070724020029A), Jul 24, 2007: Amtr CTSW, Oshkosh, WI, Substantial damage. (-23) The pilot [privacy data omitted] was attempting to land on runway 18 at osh. Due to eaa convention taking place, the runway waas split into three landing…

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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