ANC04LA110

NTSB accident investigation · Piper PA-18 · Slana, AK · September 17, 2004

Accident · No injuriesLimited investigationFinal report
Date
September 16, 2004, 18:00 local (Sep 17, 2004, 02:00 UTC)
Place
Slana, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N82491Piper PA-18
Weather
Visual (VMC) · Day
Status
Completed · report June 8, 2005
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA-AL-ANC FSDO 03
FAA report
20040916024279A
Case key
60152

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 compensate for wind conditions during landing, and his failure to maintain adequate airspeed, which resulted in a loss of control, and subsequent collision with trees during an uncontrolled descent. Factors contributing to the accident were gusty wind conditions and an inadvertent stall.

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.

Loss of control - in flightApproach - vfr pattern - final approach
Weather condition - gustsFactor
Compensation for wind conditions - inadequatePilot in command(cfi)Cause
Airspeed(vs) - not maintainedPilot in commandCause
Stall - inadvertentPilot in command
In flight collision with objectDescent - uncontrolled
Object - tree(s)

Analysis

The private certificated pilot was landing toward the northeast on an airstrip that was 2,000 feet long and 60 feet wide. The wind was from the northwest about 30 knots, with gusts to 45 knots. The pilot indicated that during the landing approach, the wind lifted the left wing of the airplane, and the right wing stalled. The airplane descended into trees short of the airstrip.

Factual narrative

On September 16, 2004, about 1800 Alaska daylight time, a tundra tire-equipped Piper PA-18 airplane, N82491, sustained substantial damage when it collided with trees during the landing approach to a private airstrip, about 4 miles east of Slana, Alaska. The airplane, registered to B and B Aircraft Ventures LLC, Ogden, Utah, was being operated as a visual flight rules (VFR) local area 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 from the Little Tok River, Tok, Alaska, about 1630. No flight plan was filed, nor was one required.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on September 17, the pilot reported that he was returning to the Slana Homestead Strip from a hunting trip. The pilot indicated that the dirt surface airstrip is about 2,000 feet long and 60 wide, and is oriented northeast/southwest. He said he was landing toward the northeast, and the wind was from the northwest about 30 knots, with gusts to 45 knots. He indicated that due to the crosswind, the left wing of the airplane was lifted, and the right wing of the airplane stalled. The airplane descended into trees short of the airstrip. The pilot said the airplane received extensive damage to the wings, fuselage, and engine.

Aircraft

Registration
N82491
Reported as
Piper PA-18
Category
Airplane
Serial number
18-7809180
Airframe hours
1,970
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
William Burwell
Registered owner
B & B Aircraft Ventures LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 22, 2003 · 130 hours before
Departed
Tok, AK
Destination
Slana, AK
Airport
Slana Homestead Strip, runway 045, 2,000 × 60 ft, dirt

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
54
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
March 25, 2004
Seat
Front
Flight hours
936 total · 930 in this make and model · 891 as pilot in command · 88 in the last 90 days · 35 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
315° at 30 knots, gusting 45
Visibility
20 statute miles
Lowest ceiling
None
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.