Narrative:

I taxied my airplane into a hole on a grass taxiway and caused a minor propeller strike. There was no loss of RPM and I did not realize that the propeller had impacted the sod. I flew from vashon to renton airport (about 20 NM) and then back to vashon, still without realizing the strike had occurred. When I did the preflight prior to leaving vashon the second time, I discovered grass stains and nicks on the propeller tips. I then flew the airplane from vashon to tacoma (tiw) to have the propeller checked by a mechanic. He had the propeller repaired and performed the required airworthiness directive. Upon reflection, I feel that I should not have flown the airplane without having it first inspected by a mechanic. Perhaps more information could be made available about the potential seriousness of a propeller strike. I think that there are at least 2 human performance considerations: 1) failure to complete a thorough preflight when leaving renton, after the first flight leg, and 2) lack of knowledge about the serious nature of even a minor propeller strike.

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Original NASA ASRS Text

Title: C172 PLT HAD THE PROP STRIKE THE GND WHEN HE TAXIED INTO A HOLE ON THE GRASS TXWY. THE PLT THEN FLEW HOME AFTER DETECTING THE DAMAGE.

Narrative: I TAXIED MY AIRPLANE INTO A HOLE ON A GRASS TXWY AND CAUSED A MINOR PROP STRIKE. THERE WAS NO LOSS OF RPM AND I DID NOT REALIZE THAT THE PROP HAD IMPACTED THE SOD. I FLEW FROM VASHON TO RENTON ARPT (ABOUT 20 NM) AND THEN BACK TO VASHON, STILL WITHOUT REALIZING THE STRIKE HAD OCCURRED. WHEN I DID THE PREFLT PRIOR TO LEAVING VASHON THE SECOND TIME, I DISCOVERED GRASS STAINS AND NICKS ON THE PROP TIPS. I THEN FLEW THE AIRPLANE FROM VASHON TO TACOMA (TIW) TO HAVE THE PROP CHKED BY A MECH. HE HAD THE PROP REPAIRED AND PERFORMED THE REQUIRED AIRWORTHINESS DIRECTIVE. UPON REFLECTION, I FEEL THAT I SHOULD NOT HAVE FLOWN THE AIRPLANE WITHOUT HAVING IT FIRST INSPECTED BY A MECH. PERHAPS MORE INFO COULD BE MADE AVAILABLE ABOUT THE POTENTIAL SERIOUSNESS OF A PROP STRIKE. I THINK THAT THERE ARE AT LEAST 2 HUMAN PERFORMANCE CONSIDERATIONS: 1) FAILURE TO COMPLETE A THOROUGH PREFLT WHEN LEAVING RENTON, AFTER THE FIRST FLT LEG, AND 2) LACK OF KNOWLEDGE ABOUT THE SERIOUS NATURE OF EVEN A MINOR PROP STRIKE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.