SEA93LA085

NTSB accident investigation · Schweizer G-164A · Walla Walla, WA · March 30, 1993

Accident · Minor injuriesLimited investigationFinal report
Date
March 30, 1993, 07:45 local (15:45 UTC)
Place
Walla Walla, WA
Injuries
1 minor
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N8734HSchweizer G-164A
Weather
Visual (VMC) · Day
Status
Completed · report October 13, 1993
Report
Approved by Office Director
FAA report
19930330007459A
Case key
43005

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

A loss of engine power for undetermined reasons. The lack of a suitable landing area was a factor.

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
Forced landingDescent - emergency
Nose overLanding - roll
Terrain condition - none suitableFactor

Analysis

The pilot of the agricultural aircraft stated that he had just completed his second spray pass of the morning when the engine quit without warning. He attempted a forced landing in a wheat field. The aircraft nosed over after touchdown in the soft field. After exiting from the cockpit, the pilot attempted to put out a small fire on the engine, but was unsuccessful. The aircraft was consumed by fire. An FAA inspector inspected the wreckage and found no mechanical discrepancies. He stated that he believed the pilot had encountered carburetor icing conditions.

Aircraft

Registration
N8734H
Reported as
Schweizer G-164A
Category
Airplane
Serial number
1503
Airframe hours
4,423
Engine
P&W R-1340-AN1, 600 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Aerial application · Part 137
Operator
Blue Mountain Aviation
Registered owner
Blue Mountain Aviation
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · February 4, 1993 · 40 hours before

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
38
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
2,360 total · 912 in this make and model · 2,306 as pilot in command · 103 in the last 90 days · 92 in the last 30 days · 7 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 4 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
48 °F, dew point 34 °F
Altimeter
30.00 inHg
Observed at
ALW, 5 nm away

FAA reports on this event · 1

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