Accident Bellanca 17-30A N6707V, Tuesday 30 July 1985

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Date:	Tuesday 30 July 1985
Time:	19:10 LT
Type:	Bellanca 17-30A
Owner/operator:	Risher Corporation
Registration:	N6707V
MSN:	30311
Total airframe hrs:	1295 hours
Engine model:	Continental IO-520-K1A
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Camden, SC - United States of America
Phase:	En route
Nature:	Training
Departure airport:	Camden, SC (KCDN)
Destination airport:
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
WHILE THE ACFT WAS FLYING OVER WOODED TERRAIN, THE ENG LOST POWER. THE PLT SAW A PLOWED FIELD APRX 3 MI AWAY & BEGAN AN EMERG APCH TO THE FIELD. THE ACFT STRUCK THE TOPS OF TREES ON FINAL APCH, BUT CONTINUED FLYING UNTIL THE PLT MADE A GEAR UP LANDING. AN EXAM REVEALED THAT THE EXHAUST MUFFLER HAD FAILED AT A WELD WHERE A BALL JOINT WAS CONNECTED. THIS ALLOWED HOT EXHAUST GASES TO ENTER THE ENG COMPARTMENT, BURN THE MAGNETO WIRES & RENDER THE MAGNETOS INOPERATIVE. AN AIRWORTHINESS DIRECTIVE, AD 76-23-03, WHICH REQUIRED AN INSPECTION OF THE EXHAUST SYS EACH 100 HRS, HAD BEEN COMPLIED WITH ON 10/7/83, BUT HAD NOT BEEN PERFORMED DURING THE LAST ANNUAL INSPECTION ON 12/7/84. THE ACFT HAD ACCUMULATED 68 HRS OF FLT TIME SINCE COMPLIANCE WITH AD 76-23-03.

Probable Cause:

Accident investigation: