CEN16CA277

NTSB accident investigation · Grumman Acft ENG Cor-Schweizer G 164A · Topeka, KS · July 21, 2016

Accident · No injuriesData collectionFinal report
Date
July 21, 2016, 07:30 local (12:30 UTC)
Place
Topeka, KS
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N7997Grumman Acft ENG Cor-Schweizer G 164A
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed · report January 18, 2017
Report
Approved by Office Director
NTSB office
Central Region
Parties
Flight Standards District Office
FAA report
20160721011379A
Case key
93656

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 a wire during an agricultural flight.

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.

Object/animal/substance: wireEnvironmental issues › Physical environment · Awareness of conditionGrumman Acft ENG Cor-Schweizer G-164A: 2 casesAll aircraft: 588 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedGrumman Acft ENG Cor-Schweizer G-164A: 4 casesAll aircraft: 1,310 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

On his ninth spray pass, the pilot stated that he did not maintain adequate clearance above a wire near the edge of the field. He attempted an evasive climb after noticing the wire, but was unsuccessful, and the airplane contacted the wire. Following the wire strike, the pilot was able to recover the airplane and landed without further incident. The airplane sustained substantial damage to the left wing.

Factual narrative

On his ninth spray pass, the pilot stated that he did not maintain adequate clearance above a wire near the edge of the field. He attempted an evasive climb after noticing the wire, but was unsuccessful, and the airplane contacted the wire. Following the wire strike, the pilot was able to recover the airplane and landed without further incident. The airplane sustained substantial damage to the left wing.

Aircraft

Registration
N7997
Reported as
Grumman Acft ENG Cor-Schweizer G 164A
Category
Airplane
Serial number
858
Built
1971
Airframe hours
8,000
Engine
Pratt and Whitney, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Hunninghake Aerial Spraying LLC, doing business as Hunninghale Aerial Spraying
Registered owner
Hunninghake Aerial Spraying LLC
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · June 23, 2016 · 20 hours before
Departed
62K · Seneca, KS
Destination
62K · Seneca, KS
Equipment
Onboard weather, Handheld GPS

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
29
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, With waivers/limitations
Last flight review
May 30, 2016
Seat
Center
Restraint
3-point
Flight hours
750 total · 135 in this make and model · 720 as pilot in command · 135 in the last 90 days · 45 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 73 °F
Altimeter
30.04 inHg
Observed at
KTOP, 3 nm away

Docket · 1

The files NTSB released with the investigation on December 6, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.6 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.

Other investigations on N7997 · 1

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