SEA02LA017

NTSB accident investigation · Cessna 172N · Snohomish, WA · November 24, 2001

Accident · No injuriesLimited investigationFinal report
Date
November 24, 2001, 12:20 local (20:20 UTC)
Place
Snohomish, WA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N733XWCessna 172N
Weather
Visual (VMC) · Day
Status
Completed · report February 20, 2002
Report
Approved by Office Director
Parties
FAA-FSDO
FAA report
20011124036409A
Case key
53841

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 NTSB’s determination of the probable cause, and any contributing factors.

The student pilot misjudged the distance from a fence during taxi. The flight instructors inadequate supervision and the fence were factors.

Analysis

While the flight instructor was scanning the area for traffic, the student pilot was maneuvering the aircraft as close as possible to the end of the runway in preparation for a short field takeoff. The student misjudged the distance from the fence that borders the airport and during a right turn, the left wing struck the chain link fence.

Factual narrative

On November 24, 2001, at 1220 Pacific standard time, a Cessna 172N, N733XW, registered to and operated by Boeing Employees Flying Association as a 14 CFR Part 91 instructional flight, collided with a fence during taxi for takeoff at Harvey Field, Snohomish, Washington. Visual meteorological conditions prevailed at the time and no flight plan was filed. The aircraft was substantially damaged and the flight instructor and student pilot were not injured. The flight was departing to Renton, Washington.

The flight instructor reported that the student pilot was at the controls and maneuvering the aircraft to position it as close as possible to the end of the runway in preparation for a short field takeoff. The instructor stated that while he was scanning the area for traffic, the student made a right hand turn toward the runway and misjudged the distance from the fence that borders the runway. During the turn, the left wing struck the fence. Both pilots exited the aircraft to inspect the damage and noted a dent in the leading edge, near the wing tip. The aircraft was taxied back to a maintenance facility where a mechanic looked at the damage. The mechanic told the pilots that the aircraft was okay to fly. The flight instructor and the student then flew the aircraft back to Renton. It was later determined by the flying associations mechanic that the damage to the wing was substantial.

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.

On ground/water collision with objectTaxi
Object - fenceFactor
Distance - misjudgedDual studentCause
Supervision - inadequatePilot in command(cfi)Factor

Aircraft

Registration
N733XW
Reported as
Cessna 172N
Category
Airplane
Serial number
17268640
Airframe hours
7,625
Engine
Lycoming O-320-D2J, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Boeing Employees Flying Assoc.
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · November 9, 2001 · 24 hours before
Departed
Snohomish, WA
Destination
RNT · Renton, WA
Airport
S43 · Harvey Field

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
25
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Last flight review
February 22, 2000
Seat
Right
Flight hours
1,944 total · 591 in this make and model · 1,944 as pilot in command · 109 in the last 90 days · 56 in the last 30 days
Role
Student pilot
Injuries
None

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
7,000 ft overcast
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.

Other investigations on N733XW · 1

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