WPR13CA371

NTSB accident investigation · Cessna 172H · Metaline Falls, WA · August 14, 2013

Accident · No injuriesData collectionFinal report
Date
August 14, 2013, 12:00 local (19:00 UTC)
Place
Metaline Falls, WA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N8160LCessna 172H
Defining event
Taxi-to runway: Ground collision
Weather
Visual (VMC) · Day
Status
Completed · report February 4, 2014
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA FSDO
FAA report
20130814014779A
Case key
87782

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's failure to maintain clearance from a windsock pole while taxiing.

Findings · 2

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.

Object/animal/substance: wind sockEnvironmental issues › Physical environment · Contributed to outcomeCessna 172H: 1 caseAll aircraft: 12 cases

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 was taxiing to the north, on the west side of the runway outside of the runway markers in preparation for takeoff. While maneuvering the airplane around a pothole, he lost sight of the windsock pole in the clutter of trees lining the airport boundary. Subsequently, the left wing struck the windsock pole, resulting in substantial damage to the wing spar. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

The pilot was taxiing to the north, on the west side of the runway outside of the runway markers in preparation for takeoff. While maneuvering the airplane around a pothole, he lost sight of the windsock pole in the clutter of trees lining the airport boundary. Subsequently, the left wing struck the windsock pole, resulting in substantial damage to the wing spar. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N8160L
Reported as
Cessna 172H
Category
Airplane
Serial number
17256360
Built
1967
Airframe hours
3,764
Engine
Franklin 6A-350, 220 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Dier Joseph M Sr
Registered owner
Dier Joseph M Sr
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 25, 2013
Departed
09S · Metaline Falls, WA
Destination
65S · Boundry, CO
Airport
09S · Sullivan Lake State, runway 16, 1,765 × 100 ft, grass/turf

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
59
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
March 24, 2012
Seat
Left
Restraint
3-point
Flight hours
614 total · 612 in this make and model · 614 as pilot in command · 57 in the last 90 days · 29 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
50 statute miles
Lowest ceiling
None
Temperature
75 °F

Docket · 1

The files NTSB released with the investigation on December 19, 2013, 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.