WPR11LA181

NTSB accident investigation · Cessna A188 · Palouse, WA · April 1, 2011

Accident · Serious injuriesLimited investigationFinal report
Date
April 1, 2011, 12:00 local (19:00 UTC)
Place
Palouse, WA
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N5851GCessna A188
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed · report March 20, 2012
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA FSDO
FAA report
20110401004389A
Case key
78734

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 did not maintain adequate clearance from obstacles during a low-level aerial application maneuver.

Findings · 5

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.

Action: incorrect action performancePersonnel issues › Action/decision · PilotCessna A188B: 5 casesAll aircraft: 1,386 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna A188B: 6 casesAll aircraft: 1,310 casesProbable cause
Terrain: mountainous/hilly terrainEnvironmental issues › Physical environment · Effect on operationCessna A188B: 1 caseAll aircraft: 329 cases
Object/animal/substance: tree(s)Environmental issues › Physical environment · Effect on operationCessna A188B: 3 casesAll aircraft: 933 cases
Object/animal/substance: tree(s)Environmental issues › Physical environment · Response/compensationCessna A188B: 3 casesAll aircraft: 933 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 he was on his second pass applying dry fertilizer to a field during an aerial application flight. He banked to the right away from steeply rising terrain. During the turn, the resultant loss of lift from the banked turn and gusting wind carried the airplane toward trees at the edge of the field. Despite the pilot's efforts to maneuver away from the trees, the airplane collided with them.

Factual narrative

On April 1, 2011, about 1200 Pacific daylight time, a Cessna A188B, N5851G, collided with terrain during an aerial application flight near Palouse, Washington. Dale’s Flying Service was operating the airplane under the provisions of 14 Code of Federal Regulations (CFR) Part 137. The commercial pilot sustained serious injuries; the airplane sustained substantial damage to the wings and fuselage from impact forces. Visual meteorological conditions prevailed, and no flight plan had been filed. The pilot reported that he was on his second pass applying dry fertilizer to a field, which had steeply rising terrain of a ridge line at the end of his run. During the turn out, he indicated that the loss of lift from his right bank and gusty wind conditions carried the airplane toward trees at the edge of the field. The airplane did not have enough power to climb over the trees, and despite the pilot's efforts to maneuver away, the airplane collided with the trees.

Aircraft

Registration
N5851G
Reported as
Cessna A188 (B)
Category
Airplane
Serial number
18801154T
Airframe hours
11,496
Engine
Continental Motors IO-520D, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Dales Flying Service
Registered owner
Dales Flying Service
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · March 11, 2011
Departed
WN26 · Palouse, WA
Destination
Palouse, WA

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
31
Injuries
Serious
Certificates
Commercial, Airline transport
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
September 20, 2010
Seat
Single
Flight hours
6,700 total · 22 in this make and model · 22 in the last 90 days · 22 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 37 °F
Altimeter
29.93 inHg
Observed at
KPUW

Docket · 1

The files NTSB released with the investigation on February 1, 2012, 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.