CEN20LA415

NTSB accident investigation · Cessna 170 · San Antonio, TX · September 20, 2020

Accident · No injuriesClass 4 · LimitedFinal report
Date
September 20, 2020, 13:00 local (18:00 UTC)
Place
San Antonio, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4019VCessna 170
Defining event
Landing: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
FAA - SAT FSDO
FAA report
20200920017609A
Case key
102025

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 inadequate compensation for gusting crosswind conditions while landing, which resulted a loss of lateral control and impact with a fence.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: crosswind correctionAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 170: 1 caseAll aircraft: 184 cases
Object/animal/substance: fence/fence postEnvironmental issues › Physical environment · Effect on operationCessna 170: 3 casesAll aircraft: 313 cases
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Effect on operationCessna 170: 3 casesAll aircraft: 1,008 cases

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that, during landing on runway 35, a gust of wind pushed the airplane to the right and that it then struck an airport perimeter fence at the edge of the airport property. The fence was located about 100 ft right of the runway centerline. The aft fuselage and the left horizontal stabilizer were substantially damaged. An airport observation station located about 10 miles from the accident site reported wind from 020° at 10 knots, gusting to 15 knots. The pilot reported that there were no preaccident mechanical “problems” with the airplane.

Aircraft

Registration
N4019V
Reported as
Cessna 170 (Undesignat)
Category
Airplane
Serial number
18338
Built
1948
Engine
Continental C145 SERIES, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Ayala Gerardo J
Airworthiness certificate
Standard, Normal
Airport
8T8 · San Geronimo Airpark, runway 35, 3,000 × 40 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
74
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
BasicMed
Seat
Left
Flight hours
650 total

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 10 knots, gusting 15
Visibility
7 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 48 °F
Altimeter
30.09 inHg
Observed at
CVB, 10 nm away

Docket · 3

The files NTSB released with the investigation on June 9, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.3 MB in all.

FAA reports on this event · 1

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