Accident Cessna 177RG N1969Q, Tuesday 19 January 1982

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Date:	Tuesday 19 January 1982
Time:	07:30 LT
Type:	Cessna 177RG
Owner/operator:	Max And Delores Van Rees
Registration:	N1969Q
MSN:	0369
Total airframe hrs:	1170 hours
Engine model:	Lycoming IO-360-A1B6
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Urbandale, IA - United States of America
Phase:	En route
Nature:	Private
Departure airport:	Urbandale, IA (Y76)
Destination airport:	Corpus Christi, TX
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
AFTER TAKEOFF, THE ENGINE LOST POWER AT ABOUT 2000 FT MSL. THE PLANE WAS DAMAGED DURING A FORCED LANDING ON AN INTERSTATE HIGHWAY. WHEN CHECKED AFTER THE ACCIDENT, THE ENGINE WOULD START BUT LOST POWER WHEN ACCELERATED ABOVE 1000 RPM. THE BENDIX SERVO FUEL INJECTOR, MODEL RSA-5AD1, WAS BENCH CHECKED AND WOULD DELIVER ONLY IDLE FUEL FLOW. A FURTHER EXAMINATION REVEALED THAT THE ELASTIC STOP NUT, PN 178491, HAD BACKED OFF OF THE FUEL DIAPHRAGM ASSEMBLY STEM. THIS RESTRICTED THE REGULATOR TRAVEL AND RESULTED IN A LEAN MIXTURE.

Probable Cause:

Accident investigation: