ANC07LA108

NTSB accident investigation · Cessna 172 · Bethel, AK · September 28, 2007

Accident · Serious injuriesLimited investigationFinal report
Date
September 27, 2007, 20:30 local (Sep 28, 2007, 04:30 UTC)
Place
Bethel, AK
Injuries
1 serious, 2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N758TGCessna 172
Weather
Visual (VMC) · Day
Status
Completed · report May 28, 2008
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration
FAA report
20070927023099A
Case key
66775

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 trees while landing.

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 objectApproach
Clearance - not maintainedPilot in commandCause
Object - tree(s)

Analysis

The private pilot was landing a float-equipped airplane on a portion of a river that was surrounded by trees. During the northerly approach to the river, just before touchdown, a gust of wind pushed the airplane to the left, and the pilot overcorrected to the right. The right wing collided with a tree that was hanging over the river. The airplane subsequently pivoted to the right, and descended into the river, sustaining structural damage to the wings, fuselage, and empennage. The pilot said that there were no preaccident mechanical anomalies with the airplane.

Factual narrative

On September 27, 2007, about 2030 Alaska daylight time, a float-equipped Cessna 172 airplane, N758TG, sustained substantial damage while landing on a river, about 44 miles northwest of Bethel, Alaska. The airplane was being operated as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. Of the three people on board, the private pilot and one passenger sustained no injuries, and one passenger sustained serious injuries. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated at the Bethel Seaplane Base, Bethel, about 1930.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on September 28, the pilot reported that he was landing on a portion of a river that was surrounded by trees, and that his northerly approach required a correction for a slight right crosswind. He said that just before touchdown, a gust of wind pushed the airplane to the left, he overcorrected to the right, and the airplane's right wing collided with a tree that was hanging over the river. The airplane pivoted to the right and descended into the river. The airplane sustained substantial damage to the right wing, fuselage, and empennage.

The pilot noted that there were no preaccident mechanical anomalies with the airplane.

Aircraft

Registration
N758TG
Reported as
Cessna 172
Category
Airplane
Serial number
R1723088
Airframe hours
3,000
Engine
Continental IO-360, 210 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Myron E. Angstman
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 1, 2007 · 150 hours before
Departed
Z59 · Bethel, AK
Destination
Bethel, AK
Airport
runway 36, water

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 sea, Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
July 1, 2007
Seat
Left
Flight hours
3,000 total · 2,950 in this make and model · 3,000 as pilot in command · 100 in the last 90 days · 30 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 10 knots, gusting 15
Visibility
10 statute miles
Lowest ceiling
3,000 ft broken
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.