SEA97LA074

NTSB accident investigation · Weatherly 620B · Wasco, OR · March 22, 1997

Accident · Minor injuriesLimited investigationFinal report
Date
March 22, 1997, 11:30 local (19:30 UTC)
Place
Wasco, OR
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N20113Weatherly 620B
Weather
Visual (VMC) · Day
Status
Completed · report April 10, 1998
Report
Approved by Office Director
FAA report
19970322003499A
Case key
42574

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 partial loss of engine power for undetermined reasons and the pilot's selection of unsuitable terrain for a precautionary landing. A factor was the rough terrain.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerManeuvering - aerial application
Reason for occurrence undeterminedCause
Nose overLanding - roll
Precautionary landing - performedPilot in command
Terrain condition - rough/unevenFactor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause

Analysis

The pilot stated that his engine began running roughly while he was conducting a spray pass. He pulled up and elected to perform a precautionary landing in an adjacent field, where he believed he could check out the apparent roughness. During the landing roll, the right wheel dug into the soil and the airplane nosed over when he applied brakes to attempt to stop the ensuing groundloop.

Factual narrative

On March 22, 1997, approximately 1130 Pacific standard time, N20113, a Weatherly 620B agricultural aircraft, sustained substantial damage when it nosed over during a precautionary landing near Wasco, Oregon. The commercial pilot, who was engaged in aerial application activities, sustained minor injuries. The flight had departed about ten minutes earlier from a Wasco airstrip. Visual meteorological conditions prevailed at the time of the accident. There was no fire and the airplane was not equipped with an ELT.

The pilot stated that his engine began running roughly while he was conducting a spray pass. He pulled up and elected to attempt a precautionary landing in an adjacent field, where he believed he could check out the apparent roughness. During the landing roll, the right wheel dug into the soil and the airplane nosed over when he applied brakes to attempt to stop the ensuing groundloop.

Aircraft

Registration
N20113
Reported as
Weatherly 620B
Category
Airplane
Serial number
1561
Engine
P&W R985-14B, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Grant And Sandy Porter Inc
Airworthiness certificate
Special, Restricted (Special)
Departed
OR

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
36
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
4,400 total · 1,200 in this make and model · 200 in the last 90 days · 100 in the last 30 days · 8 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
50 statute miles
Lowest ceiling
None
Temperature
50 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.