ANC02LA103

NTSB accident investigation · Piper PA-18 · Chickaloon, AK · August 24, 2002

Accident · No injuriesLimited investigationFinal report
Date
August 23, 2002, 20:00 local (Aug 24, 2002, 04:00 UTC)
Place
Chickaloon, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N7489DPiper PA-18
Weather
Visual (VMC) · Day
Status
Completed · report April 29, 2003
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA Anchorage FSDO-03
FAA report
20020823026719A
Case key
55556

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 maintain clearance from ground obstructions while taxiing. A factor contributing to the accident was excessive taxi speed.

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 collision with objectTaxi - to takeoff
Object - tree(s)
Clearance - not maintainedPilot in commandCause
Taxispeed - excessivePilot in commandFactor

Analysis

The pilot reported that he had landed on a creek bed, and unloaded the passenger and supplies. He said he was taxiing for takeoff en route to retrieve another load of supplies, when his right wing struck a tree. He said the airplane spun sharply to the right, the left main landing gear collapsed, and the left wing struck the ground. The pilot said he was probably taxiing too fast for the terrain conditions, and he had a tailwind. The left wing spar and landing gear of the airplane were damaged.

Factual narrative

On August 23, 2002, about 2000 Alaska daylight time, a wheel-equipped Piper PA-18 airplane, N7489D, sustained substantial damage when it collided with trees during taxi for takeoff at Carpenter Creek, 5 miles west of Chickaloon, 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 private pilot was not injured. Visual meteorological conditions prevailed, and no flight plan was filed. The flight was bound for Wolf Lake, a private airstrip near Palmer, Alaska.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on August 24, the pilot said he had just dropped off his hunting partner, and supplies at Carpenter Creek. He said he was taxiing for takeoff, en route to pick up more supplies at Wolf Lake, when the airplane's right wing struck a willow tree. He said the airplane spun sharply to the right, and the left main landing gear collapsed. The pilot said he thought he was probably taxiing too fast, and there was a tailwind. He reported the left wing struck the ground, and the spar was broken.

The pilot said the airplane had no known mechanical anomalies prior to the accident.

Aircraft

Registration
N7489D
Reported as
Piper PA-18
Category
Airplane
Serial number
5828
Airframe hours
3,812
Engine
Lycoming O-320-A2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Charles R. Kase
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 26, 2002 · 4 hours before
Departed
Chicaloon, AK
Destination
PAAQ · Palmer, 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
49
Injuries
None
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
May 25, 2001
Seat
Front
Flight hours
1,184 total · 196 in this make and model · 1,184 as pilot in command · 92 in the last 90 days · 11 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 7 knots
Visibility
10 statute miles
Lowest ceiling
8,000 ft broken
Temperature
55 °F, dew point 46 °F
Altimeter
29.79 inHg
Observed at
PAAQ, 20 nm away

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 N7489D · 1

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