ANC08LA101

NTSB accident investigation · Piper PA-18 · Tyonek, AK · August 7, 2008

Accident · No injuriesLimited investigationFinal report
Date
August 6, 2008, 17:00 local (Aug 7, 2008, 01:00 UTC)
Place
Tyonek, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N82057Piper PA-18
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report April 15, 2009
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA-AL-ANC FSDO 03
FAA report
20080806844699A
Case key
68645

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's excessive speed and excessive application of brakes during the landing roll on soft, sandy terrain.

Findings · 3

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.

Performance/control parameters: surface speed/brakingAircraft › Aircraft oper/perf/capability · Incorrect use/operationPiper PA-18-150: 14 casesAll aircraft: 238 casesProbable cause
Action: incorrect action performancePersonnel issues › Action/decision · PilotPiper PA-18-150: 12 casesAll aircraft: 1,386 casesProbable cause
Runway/land/takeoff/taxi surface: soft surfaceEnvironmental issues › Physical environment · Contributed to outcomePiper PA-18-150: 10 casesAll aircraft: 264 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 private pilot was landing a tundra-tire-equipped airplane on a sandy area that was about 900 feet long, and about 50 feet wide. As the pilot applied the brakes in an area of soft sand, the airplane nosed over. The airplane received structural damage to the fuselage, left wing, left wing strut, and the vertical stabilizer. The pilot noted that he could have landed "a little slower so as to not need any braking to get stopped before the soft sand, or land somewhere else."

Factual narrative

On August 6, 2008, about 1700 Alaska daylight time, a tundra tire-equipped Piper PA-18 airplane, N82057, sustained substantial damage when it nosed over during the landing roll at a remote airstrip, about 16 miles west-southwest of Tyonek, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country personal flight under Title 14, CFR Part 91, when the accident occurred. The airplane was operated by the pilot. The private certificated pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed. The flight originated at the Lake Hood Strip, Anchorage, Alaska, about 1615, and no flight plan was filed.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on August 7, the pilot reported that he was landing toward the southeast on a sandy area that was about 900 feet long, and about 50 feet wide. As he applied the brakes in an area of soft sand, the airplane nosed over. The airplane received structural damage to the fuselage, left wing, left wing strut, and the vertical stabilizer.

In the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1) submitted by the pilot, the pilot noted in the section of the report for "Recommendation (How could this accident have been prevented?)" that he could have landed "a little slower so as to not need any braking to get stopped before the soft sand, or land somewhere else."

Aircraft

Registration
N82057
Reported as
Piper PA-18
Category
Airplane
Serial number
18-7809120
Airframe hours
2,729
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
John T. Hester
Registered owner
John T. Hester
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 1, 2008 · 39 hours before
Departed
Z41 · Anchorage, AK
Destination
Tyonek, 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
55
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
July 18, 2008
Seat
Front
Flight hours
803 total · 698 in this make and model · 729 as pilot in command · 26 in the last 90 days · 10 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
3,000 ft broken
Temperature
64 °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 N82057 · 2

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