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Aviation safety reports, made easier to study

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NTSB Report

August 11, 1994 · Schweizer G-164-A · N699Y

Laton, CA

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
August 11, 1994
Injury Outcomes
No injuries (1 uninjured)
Location
Laton, CA
Aircraft
Schweizer G-164-A
Tail Number
N699Y
Operator
Mark K Trinkle
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX94LA313

DURING A DAY AERIAL APPLICATION FLIGHT, THE NO.7 ENGINE CYLINDER FAILED. THE PILOT MADE AN EMERGENCY LANDING IN A COTTON FIELD AND THE AIRPLANE NOSED OVER. THE ENGINE HAD 750 HOURS SINCE OVERHAUL, AND 100 HOURS SINCE THE LAST INSPECTION. THE REASON FOR THE FAILURE WAS NOT REPORTED.

NTSB Probable Cause

failure of the No.7 cylinder for an unspecified reason.

Full Narrative

On August 11, 1994, at 0954 Pacific daylight time, a Schweizer G-164, N699Y, collided with ground obstructions during a forced landing near Laton, California. The pilot was completing a visual flight rules (VFR) local aerial application flight. The airplane, operated by Trinkle Flying Service, Kingsburg, California, sustained substantial damage. Visual meteorological conditions prevailed. The certificated commercial pilot, the sole occupant, was not injured. The flight originated at the operator's Kingsburg Flying Service private airstrip at an undetermined time. The pilot reported that the No.7 cylinder split, resulting in a significant loss of engine power. He was unable to return to the Kingsburg airstrip, so he landed in a nearby cotton field. The airplane nosed over in tall cotton. The engine had 750 flight hours since overhaul, and 100 hours since the last inspection. The operator did not report why the cylinder failed.

Flight

Event TypeAccident
Event Time09:54 PDT
Nearest Airport0nm
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftSchweizer G-164-A
Tail NumberN699Y
Aircraft CategoryAir
DamageSubstantial
OperatorMark K Trinkle
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsP&W · R-1340AN-1 · Reciprocating · 550
Seats1

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 41 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind270°
Visibility30 sm
CeilingNone
Temperature / Dew Point0 C / 19 C
Altimeter0
Weather SourcePILO

Appendix: Source Data