ANC04LA103

NTSB accident investigation · Piper PA-18-150 · Anchorage, AK · September 3, 2004

Accident · No injuriesLimited investigationFinal report
Date
September 3, 2004, 13:26 local (21:26 UTC)
Place
Anchorage, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N82353Piper PA-18-150
Weather
Visual (VMC) · Day
Status
Completed · report March 30, 2005
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Anchorage Flight Standards District Office
FAA report
20040903025019A
Case key
60080

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 a crosswind during the landing roll, and his failure to maintain directional control which resulted in a loss of control, an encounter with a ditch, and the airplane nosing over. A factor in the accident was a crosswind.

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 - on ground/waterLanding - roll
Weather condition - crosswindFactor
Compensation for wind conditions - inadequatePilot in commandCause
Directional control - not maintainedPilot in command
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - ditch
Nose overLanding - roll

Analysis

The private pilot reported he was landing the tundra tire equipped tailwheel airplane on a gravel airstrip with a crosswind from his left. During the landing roll, he was unable to maintain directional control, and the airplane went off the runway to the right, encountered a shallow ditch, and nosed over. The airplane received structural damage to the rudder and wing lift struts. The pilot noted there were no preaccident mechanical problems with the airplane. A Special Weather Observation taken at the airport immediately after the accident, indicated the wind was from 290 degrees True (266 magnetic) at 15 knots.

Factual narrative

On September 3, 2004, about 1326 Alaska daylight time, a tundra tire equipped Piper PA-18-150 airplane, N82353, sustained substantial damage following a loss of directional control while landing on runway 03 at Merrill Field, Anchorage, Alaska. The solo private pilot was not injured. The 14 CFR Part 91 local personal flight operated in visual meteorological conditions without a flight plan. The flight originated at Merrill Field about 1215.

During a telephone conversation with the NTSB investigator-in-charge on September 7, the pilot related that during the landing roll on the gravel-surfaced runway, as the airplane was nearly stopped, a gust of wind from the left (west) pushed the airplane to the right. He said he attempted to correct to the left, but a second gust pushed the airplane to the right again, and the airplane went off the runway, encountered a shallow ditch, and nosed over. The airplane received structural damage to the rudder and wing lift struts. The pilot noted there were no preaccident mechanical problems with the airplane.

A Special Weather Observation taken at Merrill Field immediately following the accident, noted that the wind was from 290 True (266 magnetic) at 15 knots.

Aircraft

Registration
N82353
Reported as
Piper PA-18-150
Category
Airplane
Serial number
18-7809178
Airframe hours
636
Engine
Lycoming O-320-A2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Eric A. Swenson
Registered owner
Robert D. Swenson
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 9, 2004 · 10 hours before
Departed
MRI · Anchorage, AK
Airport
MRI · Merrill Field, runway 03, 2,000 × 60 ft, gravel

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
17
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
70 total · 17 in this make and model · 15 as pilot in command · 40 in the last 90 days · 23 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
266° at 15 knots, gusting 17
Visibility
10 statute miles
Lowest ceiling
6,000 ft overcast
Temperature
55 °F, dew point 39 °F
Altimeter
29.63 inHg
Observed at
PAMR

FAA reports on this event · 1

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