RivetBangers.com

RV8 - ASN Report - N42CS

Indeed, engine failure during takeoff is a critical situation. Lately, piloting experimental aircraft seems to be a high-risk occupation. Six of the last thirteen accidents have involved RV8s.

https://asn.flightsafety.org/wikibase/465314

The aircraft, an Experimental Stephen Schultz RV-8, Registration (*unconfirmed) N42CS, sustained unreported damage subsequent to impact with open field terrain shortly after takeoff from Smithville Crawford Municipal Airport (84R), Smithville, Texas. The sole pilot onboard the single engine Amateur Built airplane received unspecified injuries.

RV8 - Final Report - N42CS

The engine failed entirely at 100 feet after takeoff with full fuel tanks, presenting what is likely the worst-case scenario for a pilot due to the limited options available. The cause of the engine failure could not be identified, as the engine operated normally during the post-accident test run. It seems this incident will remain mystery. Hey, keep sumping those fuel tanks after each fill and before each flight, just like you were trained. also, keep the fuel vents open, clear, and protected with a screen for bug protection in the "bug" months.

https://data.ntsb.gov/carol-repgen/api/ ... 199413/pdf

Analysis
The airplane was filled with fuel before takeoff. Shortly after takeoff, at an altitude of 100 to 150 ft above ground level (agl) the airplane’s engine began to lose power and then lost total power. The pilot reported he leveled the wings; however, the airplane entered an aerodynamic stall before it descended and impacted an open field.

The engine started and ran to normal operating power during a post-accident engine test run. Although the engine continued to operate although the ignition switch was moved to the “off” position, the issue would not have led to a loss of power. The reason for the loss of engine power could not be determined.

Probable Cause and Findings
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
A loss of engine power for undetermined reasons.