FTW86LA037

NTSB accident investigation · Boeing A75N1 · Yukon, OK · January 18, 1986

Accident · No injuriesLimited investigationFinal report
Date
January 18, 1986, 15:33 local (21:33 UTC)
Place
Yukon, OK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4935NBoeing A75N1
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860118002169A
Case key
21993

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionLanding - roll
Landing gear,normal brake system - failure,totalCause
Nose overLanding - roll

Analysis

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.

Aircraft

Registration
N4935N
Reported as
Boeing A75N1
Category
Airplane
Serial number
75-2087
Airframe hours
2,220
Engine
Continental W670-6A, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Darnell Oil Corp.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · September 15, 1985
Airport
F29 · Page

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
55
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Flight hours
376 total · 154 in this make and model · 236 as pilot in command · 33 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 14 knots, gusting 18
Visibility
1 statute miles
Lowest ceiling
None
Temperature
55 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.