Wednesday, January 04, 2017

Van's RV-7-A, N5897R: Accident occurred December 31, 2016 in Casa Grande, Pinal County, Arizona

Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf 

Docket And Docket Items - National Transportation Safety Board: https://dms.ntsb.gov/pubdms

NTSB Identification: GAA17CA108 
14 CFR Part 91: General Aviation
Accident occurred Saturday, December 31, 2016 in Casa Grande, AZ
Probable Cause Approval Date: 04/04/2017
Aircraft: LARSON ROGER H RV-7, registration: N5897R
Injuries: 1 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The pilot reported that, during his second flight, following the installation of a new autopilot, he noticed on short final that the mixture was set too lean. He added that, “with a gloved hand,” he pushed the mixture in to a richer setting and accidently turned on the autopilot, which was located directly above the mixture control. The autopilot was set to navigation mode, heading mode, and altitude mode from a previous flight. The pilot reported that he was “fighting the auto pilot” and that the airplane aerodynamically stalled, which resulted in a hard landing.

The airplane sustained substantial damage to the firewall.

The pilot reported that there were no preaccident mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
The pilot’s inadvertent application of the autopilot during short final, which resulted in an aerodynamic stall and hard landing.


Additional Participating Entity: 
Federal Aviation Administration / Flight Standards District Office: Scottsdale, Arizona

Aviation Accident Factual Report / National Transportation Safety Board: https://app.ntsb.gov/pdf

http://registry.faa.gov/N5897R

NTSB Identification: GAA17CA108
14 CFR Part 91: General Aviation
Accident occurred Saturday, December 31, 2016 in Casa Grande, AZ
Aircraft: LARSON ROGER H RV-7, registration: N5897R
Injuries: 1 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The pilot reported that during his second flight, following the installation of a new autopilot, he noticed on short final that the mixture was set too lean. He further reported that "with a gloved hand" he pushed the mixture in to a richer setting; and accidently turned on the autopilot, which was located directly above the mixture control. The autopilot was set to navigation mode, heading mode, and altitude mode from a previous flight. The pilot reported that he was "fighting the auto pilot" and the airplane aerodynamically stalled, resulting in a hard landing.

The airplane sustained substantial damage to the firewall.

The pilot reported there were no pre-accident mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

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