ANC09TA090

NTSB accident investigation · Piper PA-18-150 · Bethel, AK · August 31, 2009

Accident · No injuriesFinal report
Date
August 30, 2009, 17:50 local (Aug 31, 2009, 01:50 UTC)
Place
Bethel, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N743Piper PA-18-150
Defining event
Landing-landing roll: Nose over/nose down
Weather
Visual (VMC) · Day
Status
Completed · report April 22, 2010
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Department of the Interior, Aviation Management
FAA report
20090830049359A
Case key
74639

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 excessive use of brakes while landing at an off-airport site.

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.

Aircraft capability: braking capabilityAircraft › Aircraft oper/perf/capability · Incorrect use/operationAll aircraft: 57 casesProbable cause
TerrainEnvironmental issues › Physical environment · Contributed to outcomeAll aircraft: 267 cases
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAll aircraft: 9,295 casesProbable cause

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.

Nose over/nose downLanding-landing rollAll aircraft: 2,287 casesDefining event

Analysis

The airplane was being operated by the U.S. Fish and Wildlife Service, in support of a law enforcement mission, as a visual-flight-rules public use flight. The commercial pilot said that he applied the brakes of the tailwheel-equipped airplane aggressively during the landing roll to avoid running off the end of the off-airport landing area. He said that the airplane stopped quickly and nosed down, coming to rest on its nose. He noted that there were no mechanical problems with the airplane prior to the accident. The pilot said that in addition to the left wing tip and leading edge receiving damage, the fuselage and tubular brace above the pilot's seat received substantial damage.

Factual narrative

On August 30, 2009, about 1750 Alaska daylight time, a tailwheel equipped, Piper PA-18 airplane, N743, sustained substantial damage when it nosed down during landing at an off-airport site, about 25 miles southeast of Bethel, Alaska. The airplane was being operated by the U.S. Fish and Wildlife Service, U.S. Department of the Interior, in support of a law enforcement mission, as a visual flight rules (VFR) public use flight, under Title 14, CFR Part 91, when the accident occurred. The solo commercial pilot was not injured. Visual meteorological conditions prevailed, and company flight following procedures were in effect. The airplane departed Bethel about 1415. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on August 31, a spokesperson for the Fish and Wildlife Service said the pilot reported applying the brakes heavily during landing, and the airplane nosed down. He said there were no known mechanical anomalies with the airplane prior to the accident, and that the airplane sustained substantial damage to the fuselage during the accident.

Aircraft

Registration
N743
Reported as
Piper PA-18-150
Category
Airplane
Serial number
18-8109055
Airframe hours
3,650
Engine
Lycoming O-320 SERIES, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Public aircraft - federal · Public use
Operator
United States Department Of Interior, doing business as U.S. Fish and Wildlife Service
Registered owner
United States Department Of Interior
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 7, 2009
Departed
Bethel, AK
Destination
Bethel, AK
Flight plan
Company VFR

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
43
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
November 1, 2007
Seat
Front
Flight hours
3,727 total · 3,517 as pilot in command · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 18 knots, gusting 26
Visibility
10 statute miles
Lowest ceiling
2,800 ft overcast
Temperature
54 °F, dew point 46 °F
Altimeter
30.07 inHg
Observed at
BET, 25 nm away

Docket · 2

The files NTSB released with the investigation on November 9, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.4 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.