Accident Boeing A75N1 N4935N, Saturday 18 January 1986

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Date:	Saturday 18 January 1986
Time:	16:33 LT
Type:	Boeing A75N1
Owner/operator:	Darnell Oil Corp.
Registration:	N4935N
MSN:	75-2087
Year of manufacture:	1941
Total airframe hrs:	2220 hours
Engine model:	Continental W670-6A
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Yukon, OK - United States of America
Phase:	Landing
Nature:	Private
Departure airport:
Destination airport:
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE LEFT BRAKE LOCKED AFTER THE AIRCRAFT ROLLED A SHORT DISTANCE DURING LANDING. AIRCRAFT SLOWED UNTIL ABOUT 20 MPH FORWARD SPEED AND THEN FLIPPED INVERTED AND STOPPED. POST ACCIDENT EXAMINATION REVEALED THE BRAKE SHOE RETURN SPRING ON THE LEFT BRAKE WAS BROKEN. REASON FOR THE SPRING FAILURE WAS NOT DETERMINED.

Probable Cause:

Accident investigation: