Accident Quickie Q2 N3891P, Saturday 8 August 1987

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Date:	Saturday 8 August 1987
Time:	11:20 LT
Type:	Quickie Q2
Owner/operator:	J. William Burkholder
Registration:	N3891P
MSN:	2163
Total airframe hrs:	77 hours
Engine model:	Revmaster 2100
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	St Charles, MO - United States of America
Phase:	Initial climb
Nature:	Private
Departure airport:
Destination airport:	Cahokia, IL (KCPS)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
DRG TAKEOFF, THE ENG BEGAN TO RUN ROUGH AT AN ESTD ALT OF 50 TO 100 FT AGL & WOULD NOT DEVELOPED ENOUGH POWER TO MAINT FLT. SUBSEQUENTLY, AS THE PLT WAS LNDG IN A SOYBEAN FIELD, THE ACFT FLIPPED OVER & CAME TO REST IN AN UPRIGHT ATTITUDE. A TEARDOWN OF THE ENG REVEALED THE PUSH ROD FOR THE LEFT FORWARD EXHAUST VALVE HAD BECOME DISENGAGED (MIS- ALIGNED) FROM ITS RESPECTIVE ROCKER ARM SOCKET, ALLOWING THE EXHAUST VALVE TO REMAIN IN THE CLOSED POSITION. THE REVMASTER/VW ENG HAD A TOTAL FLT TIME OF 76.5 HRS.

Probable Cause:

Accident investigation: