ANC01LA065

NTSB accident investigation · Cessna 170B · Sand Point, AK · June 4, 2001

Accident · No injuriesLimited investigationFinal report
Date
June 3, 2001, 18:30 local (Jun 4, 2001, 02:30 UTC)
Place
Sand Point, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N4659CCessna 170B
Weather
Visual (VMC) · Day
Status
Completed · report May 21, 2002
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration
FAA report
20010603039809A
Case key
53197

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 inadequate compensation for wind conditions while on approach, and the inadvertent stall of the airplane while attempting a go-around. A factor associated with the accident was a crosswind.

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 encounter with weatherApproach
Weather condition - crosswindFactor
Compensation for wind conditions - inadequatePilot in commandCause
Loss of control - in flightGo-around (vfr)
Stall - inadvertentPilot in commandCause
In flight collision with terrain/waterGo-around (vfr)

Analysis

The certificated private pilot reported to the NTSB that while on approach to landing to the west, he encountered winds estimated to be from 220 degrees at 20 knots with gusts to 25 knots, which required a left crosswind correction. He said as the airplane continued on the approach, he inadvertently allowed the airplane to fly further down the runway than anticipated, so he applied full engine power to go-around. He said that during the go-around attempt, a very strong gust of wind pushed the airplane to the right, and the airplane's airspeed rapidly diminished. The nose of the airplane continued to the right, and the right wing stalled. The right wing and right main wheel struck the ground, and the right main landing gear collapsed. The airplane sustained substantial damage to the fuselage, and right wing.

Factual narrative

On June 3, 2001, about 1830 Alaska daylight time, a tundra tire-equipped Cessna 170B airplane, N4659C, sustained substantial damage during landing at the Sandy River Lodge Airstrip, about 55 miles northeast of Sand Point, Alaska. The airplane was being operated as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. The solo certificated private pilot was not injured. Visual meteorological conditions prevailed, and a VFR flight plan was in effect. The flight departed from the Wolf Lake Airstrip in Palmer, Alaska, about 1200, en route to King Salmon, Alaska, to refuel, then continued to the Sandy River Lodge Airstrip.

During a telephone conversation with the National Transportation Safety Board investigator-in-charge on June 7, the pilot reported that during the flight from King Salmon, en route to the Sandy River Lodge Airstrip, strong headwinds and turbulence were encountered. He added that after arriving overhead of the accident airstrip, he noted that the winds were out of the southwest, favoring a landing to the west. While on approach to the west, he encountered winds estimated to be from 220 degrees at 20 knots with gusts to 25 knots, which required a left crosswind correction. He said as the airplane continued on the approach, he inadvertently allowed the airplane to fly further down the runway than anticipated, so he applied full engine power to go-around. He said that during the go-around attempt, a very strong gust of wind pushed the airplane to the right, and the airplane's airspeed rapidly diminished. The nose of the airplane continued to the right, and the right wing stalled. The right wing and right main wheel struck the ground, and the right main landing gear collapsed. The airplane sustained substantial damage to the fuselage, and right wing.

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

Aircraft

Registration
N4659C
Reported as
Cessna 170B
Category
Airplane
Serial number
25603
Airframe hours
5,000
Engine
Lycoming O-360-A1A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
John D. Glass
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 24, 2000 · 190 hours before
Departed
AKN · King Salmon, AK
Destination
SDP · Sand Point, AK
Flight plan
VFR
Airport
Sandy River Lodge Airstrip, runway 27, 1,400 × 50 ft, gravel

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
57
Injuries
None
Certificate
Private
Airplane ratings
Single-engine sea, Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
August 1, 1999
Seat
Left
Flight hours
1,000 total · 675 in this make and model · 850 as pilot in command · 60 in the last 90 days · 25 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 20 knots, gusting 25
Visibility
40 statute miles
Lowest ceiling
1,200 ft overcast
Temperature
45 °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 N4659C · 2

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