CEN11LA405

NTSB accident investigation · Piper PA-25-235 · Faith, SD · June 18, 2011

Accident · Minor injuriesLimited investigationFinal report
Date
June 18, 2011, 07:30 local (13:30 UTC)
Place
Faith, SD
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N7018ZPiper PA-25-235
Defining event
Maneuvering: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report October 4, 2011
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA-Flight Standards
FAA report
20110618011899A
Case key
80826

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 improper turn while maneuvering during an agricultural application flight, which resulted in an inadvertent aerodynamic stall at low altitude.

Findings · 2

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: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-25-235: 4 casesAll aircraft: 1,681 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-25-235: 18 casesAll aircraft: 9,295 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

After completing an agricultural spray run, the pilot attempted to make a tight, climbing turn without extending out over an adjacent river bank. As he started the climbing turn, the airplane stalled and there was not enough altitude to recover. The airplane subsequently impacted the ground and sustained substantial damage. The river bank was about 250 feet above the height of the field. The pilot stated that there were no problems with the airplane that would have precluded normal operation. He commented that making a wider turn, outside of the river bank, might have prevented the accident.

Factual narrative

On June 18, 2011, about 0730 mountain daylight time, a Piper PA-25-235, N7018Z, was substantially damage during an in-flight collision with terrain near Faith, South Dakota. The pilot sustained minor injuries. The aircraft was registered to and operated by the pilot under the provisions of 14 Code of Federal Regulations Part 137 as an agricultural application flight. Visual meteorological conditions prevailed for the flight, which was not operated on a flight plan. The local flight departed Faith Municipal Airport (D07) about 0700. The pilot reported that after completing an agricultural spray run he thought he could turn around without extending out over an adjacent river bank. As he climbed to initiate the turn, the airplane began to stall. There was not enough altitude to recover and the airplane subsequently impacted the ground. He commented that the river bank was about 250 feet above the height of the field, and that the wind may have changed due to the terrain. He stated that there were no problems with the airplane prior to the accident. He added that making a wider turn, outside of the river bank, might have prevented the accident. The wind at D07, located about 15 miles northwest of the accident site, at 0656, was from 190 degrees at 13 knots. At 0756, the wind was from 160 degrees at 11 knots, with gusts to 17 knots. The pilot reported a south wind at 13 knots and no wind gusts.

Aircraft

Registration
N7018Z
Reported as
Piper PA-25-235
Category
Airplane
Serial number
25-2773
Airframe hours
2,711
Engine
Lycoming O-540 SERIES, 250 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · May 16, 2011
Departed
D07 · Faith, SD
Destination
D07 · Faith, SD
Airport
D07 · Faith Municipal

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
44
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Seat
Single
Flight hours
1,000 total · 85 in this make and model · 25 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 11 knots, gusting 16
Temperature
61 °F, dew point 50 °F
Altimeter
29.86 inHg
Observed at
D07, 15 nm away

Docket · 3

The files NTSB released with the investigation on August 16, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.1 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 N7018Z · 1

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