GAA15CA089

NTSB accident investigation · Cessna 188 · Polson, MT · May 26, 2015

Accident · No injuriesData collectionFinal report
Date
May 26, 2015, 11:45 local (17:45 UTC)
Place
Polson, MT
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N53141Cessna 188
Defining event
Maneuvering-low-alt flying: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed · report July 29, 2015
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
Federal Aviation Administration (Helena FSDO)
FAA report
20150526006349A
Case key
91239

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's failure to maintain airplane pitch, power, and turn coordination while maneuvering at low altitude, resulting in an aerodynamic stall and a collision with terrain.

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 188: 3 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: pitch controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 188: 1 caseAll aircraft: 526 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 188: 1 caseAll aircraft: 1,681 casesProbable cause
Performance/control parameters: angle of attackAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 188: 2 casesAll aircraft: 990 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 while maneuvering at low altitude on an aerial application flight, the airplane aerodynamically stalled and impacted terrain, resulting in substantial damage to the left wing of the airplane. The pilot reported no pre-impact mechanical failures or malfunctions that would have precluded normal operation.

Factual narrative

The pilot reported that while maneuvering at low altitude on an aerial application flight, the airplane aerodynamically stalled and impacted terrain, resulting in substantial damage to the left wing of the airplane. The pilot reported no pre-impact mechanical failures or malfunctions that would have precluded normal operation.

Aircraft

Registration
N53141
Reported as
Cessna 188 (UNDESIGNAT)
Category
Airplane
Serial number
188-0120
Built
1966
Airframe hours
3,643.75
Engine
Cont Motor O-470 SERIES, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · May 9, 2015 · 15 hours before
Departed
7S0 · Ronan, MT
Destination
PVT · Polson, MT
Equipment
Stall warning system

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
28
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1
Last flight review
February 16, 2015
Seat
Single
Restraint
4-point
Flight hours
491 total · 131 in this make and model · 436 as pilot in command · 30 in the last 90 days · 27 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 48 °F
Altimeter
30.15 inHg
Observed at
MSO, 37 nm away

Docket · 2

The files NTSB released with the investigation on July 23, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 13.2 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.