Accident Cessna 177RG N52634, Saturday 18 March 1989

You can contribute by submitting additional or updated information.

Date:	Saturday 18 March 1989
Time:	18:38 LT
Type:	Cessna 177RG
Owner/operator:	Private
Registration:	N52634
MSN:	177RG1219
Year of manufacture:	1977
Total airframe hrs:	1190 hours
Engine model:	Lycoming IO-360-A1B6D
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Rockford, IL - United States of America
Phase:	Landing
Nature:	Private
Departure airport:	Milwaukee, WI (MWC
Destination airport:	Rockford, IL (KRFD)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE MAIN LANDING GEAR COLLAPSED DURING THE ROLLOUT OF A FULL STOP LANDING. THE HYDRAULIC POWER PACK UNIT HAD BEEN REPLACED RECENTLY. THIS WAS ONLY THE SECOND FLIGHT AND SECOND LANDING SINCE THE REPLACEMENT OF THE UNIT. THE HYDRAULIC RESERVOIR WAS SLIGHTLY LESS THAN HALF FULL. GEAR OPERATION COULD NOT BE OBTAINED IN A FUNCTIONAL TEST WITH THE HYDRAULICFLUID LEVEL EXISTENT IN RESERVOIR. NORMAL GEAR FUNCTION WAS OBTAINED AFTER RESERVOIR WAS SERVICED TO OPERATING CAPACITY.

Probable Cause: THE INADEQUATE SERVICING OF THE HYDRAULIC FLUID BY MAINTENANCE PERSONNEL AND THE PILOT'S FAILURE TO EXTEND THE LANDING GEAR MANUALLY.

Accident investigation: