# NTSB CHI07CA117: Neal Anderson Comp Air 6, N6140U, Sturtevant, WI, April 21, 2007

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Data collection · Final report
- Date: April 21, 2007, 14:20 local (19:20 UTC)
- Place: Sturtevant, WI
- Coordinates: 42.703334, -87.958885
- Nearby events: https://openairdocs.org/map.md?lat=42.7033&lon=-87.9589&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report June 27, 2007
- Report: Approved by Office Director
- NTSB case key (mKey): 65879
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI07CA117
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/65879/pdf
- Page: https://openairdocs.org/ntsb/CHI07CA117

## Probable cause

The pilot's failure to obtain a proper touchdown point, which resulted in a runway over run and subsequent nose-over of the aircraft, and the pilot's improper weather evaluation to land with a quartering tailwind. Factors contributing to the accident were a quartering tailwind, the standing water, and the pilot's late decision to abort the landing.

## Sequence of events

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

- Overrun, landing - aborted
  - terrain condition - grass
  - weather condition - tailwind (contributing factor)
  - proper touchdown point - not obtained, pilot in command (cause)
  - in-flight planning/decision - delayed, pilot in command (contributing factor)
  - weather evaluation - improper, pilot in command (cause)
- Nose over, landing - aborted
  - terrain condition - muddy (contributing factor)
  - terrain condition - plowed/furrowed

## Analysis

The airplane was substantially damaged when it nosed over during an aborted landing.  The landing was being made on runway 26 right (2,343-foot-long by 120-foot-wide, turf).  The pilot stated that he landed long and attempted to abort the landing.  The abort was initiated too late and the aircraft went off of the end of the runway and into standing water.  The landing gear contacted the soft terrain and the airplane nosed over.  The wind condition reported at an airport 6 nautical miles south of the accident site, near the time of the accident was 140 degrees at 12 knots.

## Factual narrative

The airplane was substantially damaged when it nosed over during an aborted landing.  The landing was being made on runway 26 right (2,343-foot-long by 120-foot-wide, turf).  The pilot stated that he landed long and attempted to abort the landing.  The abort was initiated too late and the aircraft went off of the end of the runway and into standing water.  The landing gear contacted the soft terrain and the airplane nosed over.  The wind condition reported at an airport 6 nautical miles south of the accident site, near the time of the accident was 140 degrees at 12 knots.

## Aircraft

- Registration: N6140U (not matched to a registry record)
- Reported make and model: Neal Anderson Comp Air 6
- Category: Airplane, amateur-built
- Serial number: 006426
- Airframe hours: 118.3
- Engines: Lycoming IO-540 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Condition, September 1, 2006
- Departed: BUU, Burlington, WI
- Destination: C89, STURTEVANT, WI

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; injuries: minor; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review August 1, 2006; seat: left; flight hours: 176 total, 88 in this make and model, 176 as pilot in command, 2 in the last 90 days, 2 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 12 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 70 °F, dew point 39 °F
- Altimeter: 30.13 inHg
- Observed at: KENW, 6 nm away

## 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 20070421009199A](https://openairdocs.org/incident/20070421009199A), Apr 21, 2007: Amtr COMPAIR6, Sturtevant, WI, Substantial damage. (-23) Pilot-in-command landed long after a high pass approach and flew off end of runway. Aircraft landing gear became mired in mud of pond and aircraft…

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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