Serious incident Swearingen SA227-AC Metro III N1014T, Thursday 29 November 1984

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Date:	Thursday 29 November 1984
Time:	20:05 LT
Type:	Swearingen SA227-AC Metro III
Owner/operator:	Cascade Airways
Registration:	N1014T
MSN:	AC-432
Total airframe hrs:	6649 hours
Engine model:	GARRETT TPE 331
Fatalities:	Fatalities: 0 / Occupants: 15
Other fatalities:	0
Aircraft damage:	Minor
Category:	Serious incident
Location:	Pullman, WA - United States of America
Phase:	Take off
Nature:	Unknown
Departure airport:	(KLWS)
Destination airport:	Lewiston, ID
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE AIRCRAFT'S LANDING GEAR COLLAPSED AFTER THE PLANE WENT OFF THE RIGHT SIDE OF RUNWAY 23 DURING TAKEOFF. REPORTEDLY, THE AIRCRAFT DRIFTED TO THE RIGHT OF CENTERLINE ON A FAIRLY CONSTANT ARC UNTIL CONTACTING A SNOW BERM AT A TAXIWAY INTERSECTION. AN INVESTIGATION REVEALED THAT THE TAKEOFF WAS BEING CONDUCTED AT NIGHT WITH A PARTIALLY OBSCURED WINDSHIELD. VISIBILITY WAS ONE MILE WITH FOG AND FALLING SNOW, AND THE WIND WAS FROM 150 DEGREES AT 11 KNOTS. THE RUNWAY WAS COVERED WITH ABOUT 1/4 INCH OF SNOW. THE COPILOT'S DUTIES REQUIRED HIM TO SCAN 'INSIDE' THE COCKPIT, WHILE HE 'FINE TUNED' THE POWER SETTINGS AND CHECKED ENGINE INSTRUMENTS DURING THE TAKEOFF ROLL. NO PRE-ACCIDENT PART FAILURE OR MALFUNCTION OF THE AIRCRAFT WAS FOUND DURING THE INVESTIGATION.

Probable Cause:

Accident investigation: