SEA92LA056

NTSB accident investigation · Aero Commander S-2R · Dufur, OR · March 8, 1992

Accident · FatalLimited investigationFinal report
Date
March 8, 1992, 11:42 local (19:42 UTC)
Place
Dufur, OR
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N1763SAero Commander S-2R
Weather
Visual (VMC) · Day
Status
Completed · report September 28, 1993
Report
Approved by Office Director
FAA report
19920308007469A
Case key
41638

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 in command's misjudgment of clearance with the power lines. Factors contributing to the accident were: object (transmission wire) and safety system (not installed).

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.

In flight collision with objectManeuvering - aerial application
Object - wire,transmissionFactor
Clearance - misjudgedPilot in commandCause
Safety system(other) - not installedFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The pilot was engaged in applying herbicide to a wheat field which was crossed by a double set of power lines. During a swath run and while flying eastbound, the aircraft's canopy and vertical stabilizer snagged the lowest set of wires which were approximately 25 feet above the ground. The aircraft was not equipped with an upper fuselage cable cutting safety mechanism.

Aircraft

Registration
N1763S
Reported as
Aero Commander S-2R
Category
Airplane
Serial number
1419-R
Airframe hours
4,933
Engine
P&W R-1340-AN-1, 600 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Aerial application · Part 137
Operator
Richardson Airway, Inc.
Registered owner
Richardson Airway, Inc.
Airworthiness certificate
Standard, Utility
Last inspection
Annual · February 1, 1992 · 25 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
58
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Front
Toxicology
Performed
Flight hours
10,000 total · 6,000 in this make and model · 9,800 as pilot in command · 25 in the last 90 days · 25 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 3 knots
Visibility
30 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 43 °F
Altimeter
30.00 inHg
Observed at
DLS, 10 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.

Other investigations on N1763S · 2

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