ANC01LA072

NTSB accident investigation · Arctic S-1B2 · Petersburg, AK · June 24, 2001

Accident · No injuriesLimited investigationFinal report
Date
June 24, 2001, 10:00 local (18:00 UTC)
Place
Petersburg, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N61ATArctic S-1B2
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
20010624039319A
Case key
53202

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 selection of an unsuitable landing area. A factor associated with the accident was soft terrain.

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 encounter with terrain/waterLanding - roll
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Terrain condition - softFactor
Nose downLanding - roll

Analysis

The certificated private pilot was landing a tailwheel-equipped airplane on a sand-covered beach. During the landing roll the main landing gear wheels contacted an area of soft sand, and the airplane nosed down. The airplane sustained substantial damage to the right wing lift strut.

Factual narrative

On June 24, 2001, about 1000 Alaska daylight time, a wheel-equipped Arctic Aircraft S-1B2 airplane, N61AT, sustained substantial damage while landing at an off airport site, about 30 miles north of Petersburg, Alaska. The certificated private pilot, and the one passenger aboard, were not injured. The airplane was being operated as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated about 0930, from the Petersburg Airport, Petersburg.

During a telephone conversation with the National Transportation Safety Board investigator-in-charge on June 25, the pilot reported that during the landing roll on a sand-covered beach, the main landing gear wheels contacted an area of soft sand, and the airplane nosed down. The airplane sustained substantial damage to the right wing lift strut.

The pilot reported there were no preaccident mechanical problems with the airplane.

Aircraft

Registration
N61AT
Reported as
Arctic S-1B2
Category
Airplane
Serial number
1012
Airframe hours
1,847
Engine
Lycoming O-320-B2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
David W. Cushing
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 7, 2000 · 34.5 hours before
Departed
PSG · Petersburg, AK
Destination
PSG · Petersburg, AK

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
56
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
July 15, 1999
Seat
Front
Flight hours
787 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
20 statute miles
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 N61AT · 1

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