LAX98LA288

NTSB accident investigation · Ryan ST3KR · Los Banos, CA · September 10, 1998

Accident · No injuriesLimited investigationFinal report
Date
September 9, 1998, 17:00 local (Sep 10, 1998, 00:00 UTC)
Place
Los Banos, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N22JKRyan ST3KR
Weather
Visual (VMC) · Day
Status
Completed · report February 16, 2001
Report
Approved by Office Director
FAA report
19980909022859A
Case key
43929

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

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Probable cause

The pilot's decision to takeoff in adverse wind conditions and inadequate compensation for the existing crosswind conditions, which resulted in a failure to maintain runway alignment.

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.

Loss of control - on ground/waterTakeoff - roll/run
Weather condition - crosswind
Weather condition - gusts
Preflight planning/preparation - inadequatePilot in commandCause
Compensation for wind conditions - inadequatePilot in commandCause
Proper alignment - not maintainedPilot in commandCause
Aborted takeoff - attemptedPilot in command
On ground/water encounter with terrain/waterTakeoff - roll/run
Ground loop/swerve - encounteredPilot in command

Analysis

The pilot had landed at the airport over an hour earlier with no problems and waited to meet another airplane. On departure he estimated the winds to be 20 to 30 knots approximately 90 degrees to the runway. After a long takeoff roll he lifted off. As he relaxed the controls the aircraft drifted off the runway and settled into the dirt. At that time the pilot elected to abort the takeoff. Noticing a ditch and cornfield in his path the pilot tried to ground loop the airplane. The aircraft turned sharply into the wind and the tail dug into the soft dirt. Both wing tips scraped the ground, the left main landing gear was bent, the fuselage was twisted behind the cockpit, and the tail cone was dented. A mechanic at the field noted that the aircraft that had departed immediately prior to this aircraft had veered off and then back on the runway during takeoff.

Factual narrative

On September 9, 1998, at 1700 hours Pacific daylight time, a Ryan ST3KR, N22JK, ground looped during a rejected takeoff at Los Banos, California. The personal cross-country flight was a continuation of a flight to Chandler Field, Fresno, California. The airplane sustained substantial damage. The private pilot/owner and his passenger were not injured. Visual meteorological conditions prevailed for the personal flight and no flight plan was filed.

The pilot stated he landed over an hour earlier with no problems and waited to meet another airplane. He estimated the winds were 20 knots gusting to 30 knots, about 90 degrees to the runway at takeoff. After a long ground roll he lifted off with the flight controls in an extreme cross-controlled position. Upon neutralizing the controls the airplane immediately drifted off the right side of the runway and settled into the dirt. The pilot elected to abort the takeoff and keep the airplane on the ground. A ditch and a cornfield were in his path. He cut power and turned the aircraft sharply into the wind. During this maneuver the tail wheel dug into the soft ground beside the runway. Both wing tips scraped the ground, the left main landing gear was twisted, the fuselage was bent behind the cockpit, and the tail cone was bent.

An aircraft mechanic that worked at the airport estimated the winds to be 25 to 30 knots and 70 to 80 degrees off the runway heading. He also noted that the airplane that took off immediately prior to the accident had trouble departing. That aircraft had veered off the runway before coming back onto the runway and lifting off. He stated that the pilot told him he had stomped on the rudder to ground loop the airplane to avoid a ditch.

Aircraft

Registration
N22JK
Reported as
Ryan ST3KR
Category
Airplane
Serial number
1697
Airframe hours
2,500
Engine
Kinner R-55, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
John W. Mcmains
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 27, 1997 · 20 hours before
Departed
LSN
Destination
FCH · Fresno, CA
Airport
LSN · Los Banos Municipal, runway 32, 3,005 × 75 ft, asphalt

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
56
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Rear
Flight hours
653 total · 222 in this make and model · 520 as pilot in command · 14 in the last 90 days · 6 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 13 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 52 °F
Altimeter
29.00 inHg
Observed at
MCE, 22 nm away

FAA reports on this event · 1

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

Other investigations on N22JK · 1

Matched to the same aircraft by N-number and date.