# NTSB DEN07CA097: Stevenson RV-6, N836RV, Oakley, KS, June 1, 2007

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Data collection · Final report
- Date: June 1, 2007, 18:00 local (23:00 UTC)
- Place: Oakley, KS
- Coordinates: 39.109722, -100.81639
- Nearby events: https://openairdocs.org/map.md?lat=39.1097&lon=-100.8164&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report July 25, 2007
- Report: Approved by Office Director
- NTSB case key (mKey): 65964
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN07CA097
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/65964/pdf
- Page: https://openairdocs.org/ntsb/DEN07CA097

## Probable cause

The pilot's failure to maintain airspeed during final approach resulting in a inadvertent stall and impact with terrain.

## Sequence of events

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

- Loss of control - in flight, approach - vfr pattern - final approach
  - airspeed - not maintained, pilot in command (cause)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, landing
  - terrain condition - ground
  - object - tree(s)
  - object - fence

## Analysis

While on short final approach approximately 10 feet above ground level (agl), the pilot added a little power to the engine and then heard a "loud pop" sound.  Subsequently, the airplane stalled and the left wing impacted the grass runway.  The airplane bounced, impacted trees and a fence, and came to rest inverted adjacent to the runway.  No anomalies were noted with the airframe and engine.

## Factual narrative

According to the pilot, while on short final approach approximately 10 feet above ground level (agl), he added a little power to the engine and then heard a "loud pop" sound.  Subsequently, the airplane stalled and the left wing impacted the grass runway.  The airplane bounced, impacted trees and a fence, and came to rest inverted adjacent to the runway.  The private pilot, who was the sole occupant and co-owner of the airplane, sustained minor injuries.  Examination of the airplane revealed the vertical stabilizer and rudder were crushed.  No anomalies were noted with the airframe and engine.

## Aircraft

- Registration: [N836RV](https://openairdocs.org/aircraft/N836RV), registered now, S/N 21865, built 2006 (OpenAirDocs)
- Reported make and model: Stevenson RV-6
- Registry model: [Stevenson W/Stevenson D/Kough RV-6](https://openairdocs.org/model/stevenson-w-stevenson-d-kough-rv-6) (registry code 05621M0) (OpenAirDocs)
- Registry engine: [Superior IO-360 series](https://openairdocs.org/engine/superior-io-360-series) (registry code 59251, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 21865
- Engines: Superior XPIO-360 reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Walter A. Stevenson
- Airworthiness certificate: Standard, Normal
- Departed: Oakley, KS

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; private; airplane ratings: single-engine land; medical: class 3; flight hours: 210 total, 35 in this make and model, 3 in the last 90 days, 1 in the last 30 days

## 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 20070601012129A](https://openairdocs.org/incident/20070601012129A), Jun 1, 2007: Amtr RV6, Oakley, KS, Substantial damage. (-23) The pilot of the single engine experimental aircraft applied power to arrest his descent on short final. He reports that he heard a loud "pop" followed…

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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