Accident Thorp T-18 N147DS, Saturday 9 June 1984

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Date:	Saturday 9 June 1984
Time:	09:00 LT
Type:	Thorp T-18
Owner/operator:	Delta Sierra Services
Registration:	N147DS
MSN:	439
Year of manufacture:	1973
Total airframe hrs:	590 hours
Engine model:	Lycoming O-320
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Lee Vining, CA - United States of America
Phase:	Landing
Nature:	Private
Departure airport:	Napa, CA (KAPC)
Destination airport:	Lee Vining, CA (O24)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE PLT REPORTED THAT DURING A LANDING IN CALM AIR, THE ACFT BEGAN VEERING RIGHT WHEN HE APPLIED THE BRAKES. HE CORRECTED WITH LEFT RUDDER & BRAKE, THEN THE ACFT VEERED LEFT. SUBSEQUENTLY, IT VEERED OFF THE LEFT SIDE OF THE RWY, WENT DOWN A GRADE & NOSED OVER. THE PLT REPORTED THAT THERE WAS NOTHING WRONG WITH HIS ACFT & SUGGESTED THAT HE OVER-CORRECTED WHEN HE APPLIED LEFT RUDDER & BRAKE. THE ARPT ELEV WAS 6802 FT.

Probable Cause:

Accident investigation: