LAX03LA122

NTSB accident investigation · Ayres S2R-T34 · Avondale, AZ · April 1, 2003

Accident · No injuriesLimited investigationFinal report
Date
April 1, 2003, 13:00 local (20:00 UTC)
Place
Avondale, AZ
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N30913Ayres S2R-T34
Weather
Visual (VMC) · Day
Status
Completed · report September 1, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20030401008049A
Case key
56735

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 failed to maintain adequate visual lookout and did not maintain clearance from power lines. The backhoe's location, which caused the pilot to alter his planned flight path, 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.

In flight collision with objectManeuvering - aerial application
Maneuver to avoid obstructions - performedPilot in commandFactor
Object - vehicleFactor
Visual lookout - not maintainedPilot in commandCause
Object - wire,transmission
Clearance - not maintainedPilot in commandCause

Analysis

The airplane struck power lines during the final agricultural spray application of the day. This particular pass involved flying underneath power lines. There was a backhoe parked near the pilot's intended flight path; as a result, he flew a higher than normal flight path. The airplane impacted the lower power lines. The pilot then flew the airplane back to his original departure point.

Factual narrative

On April 1, 2003, about 1300 mountain standard time, an Ayres S2R-T34, N30913, struck power line wires during a low altitude aerial application pass near Avondale, Arizona. Pierce Aviation was operating the airplane under the provisions of 14 CFR Part 137. The commercial pilot, the sole occupant, was not injured; the airplane sustained substantial damage. The local aerial application flight departed a private strip near Buckeye, Arizona, about 1230. Visual meteorological conditions prevailed, and no flight plan had been filed. The accident occurred at 33 degrees 20 minutes north latitude and 112 degrees 20 minutes west longitude.

In a written statement submitted by the pilot, he reported that the purpose of the flight was to spray the last of seven fields. This particular pass involved flying underneath power lines. There was a backhoe parked near the pilot's intended flight path; as a result, he flew a higher than normal flight path. The airplane impacted the lower power lines, resulting in damage to the propeller, top canopy, vertical stabilizer, horizontal stabilizer, elevator, and rudder. The pilot then flew the airplane back to his original departure point.

Aircraft

Registration
N30913
Reported as
Ayres S2R-T34
Category
Airplane
Serial number
50641530
Airframe hours
11,685
Engine
Pratt and Whitney PT6A-34AG, 780 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Pierce Aviation
Registered owner
Ag Aviation
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · June 24, 2002 · 80 hours before
Departed
AZ10 · Buckeye, AZ

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
62
Injuries
None
Certificates
Flight engineer, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
April 17, 2002
Seat
Center
Flight hours
44,000 total · 1,000 in this make and model · 80 in the last 90 days · 40 in the last 30 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 6 knots
Visibility
30 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 27 °F
Altimeter
29.85 inHg
Observed at
GYR, 3 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.