CEN12CA403

NTSB accident investigation · Ayres S2R-G10 · Minden, NE · June 28, 2012

Accident · No injuriesData collectionFinal report
Date
June 28, 2012, 06:45 local (11:45 UTC)
Place
Minden, NE
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N3299ZAyres S2R-G10
Defining event
Maneuvering-low-alt flying: Turbulence encounter
Weather
Visual (VMC) · Day
Status
Completed · report October 4, 2012
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20120628013249A
Case key
84121

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 failure to maintain clearance from the wake turbulence from a previous pass.

Findings · 3

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.

Use of equip/info: use of equip/systemPersonnel issues › Task performance · PilotAyres S2R-G10: 1 caseAll aircraft: 1,391 casesProbable cause
Environmental issuesEnvironmental issues › Physical environment · Contributed to outcomeAyres S2R-G10: 1 caseAll aircraft: 24 cases
Turbulence: wake turbulenceEnvironmental issues › Conditions/weather/phenomena · Effect on operationAyres S2R-G10: 1 caseAll aircraft: 47 casesProbable cause

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 the aerial application flight he made the first pass over a field where the wind was light and variable. He then turned around and flew a pass over a tree line and descended "maybe a little low," where he flew the airplane through the wake turbulence from his previous pass. According to the pilot, the turbulence disrupted the "round out" to the field and the airplane's wheels and left wing contacted the corn. The airplane turned sideways, slid backwards, and its empennage sustained substantial damage when it deformed. The pilot indicated that there were no mechanical malfunctions with the airplane during the flight.

Factual narrative

The pilot reported that during his aerial application flight he had made his first pass over a field where the wind was light and variable. He turned around and flew a pass over a tree line and descended "maybe a little low" where he flew the airplane through the wake turbulence from his previous pass. According to the pilot, the turbulence disrupted the "round out" to the field and the airplane's wheels and left wing contacted the corn. The airplane turned sideways, slid backwards, and it's empennage sustained substantial damage when it deformed. The pilot indicated that there were no mechanical malfunctions with the airplane during the flight.

Aircraft

Registration
N3299Z
Reported as
Ayres S2R-G10
Category
Airplane
Serial number
G10-120
Airframe hours
5,294
Engine
Garrett TPE-331, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Campbell Aerial Spraying Inc
Registered owner
Campbell Aerial Spraying Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · March 1, 2012
Departed
Minden, NE
Destination
Minden, NE
Flight plan
Unknown

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
23
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Seat
Single
Flight hours
1,000 total · 117 in this make and model · 1,000 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 64 °F
Altimeter
29.95 inHg
Observed at
EAR

Docket · 1

The files NTSB released with the investigation on July 26, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.3 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.