Merrill Field Airport
Aircraft Accident/Incident Report

Anchorage, Alaska 99513
Friday, September 3, 2004 13:26 AKD

NTSB Narrative Summary Released at Completion of Accident

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.

NTSB Probable Cause Narrative

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.

Event Information

Type of Event Accident
Event Date 9/3/2004
Event Day of the Week Friday
Time of Event 1326
Event Time Zone --
Event City Anchorage
Event State ALASKA
Event Country --
Zipcode of the event site 99513
Event Date Year 2004
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 611249N
Event Location Longitude 1495040W
Event Location Airport MERRILL FIELD
Event Location Nearest Airport ID MRI
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 137
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1326 Atlantic Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID PAMR
Elevation of weather observation facility 137
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation ADT
Lighting Conditions Day
Lowest Ceiling Height 6000
Lowest Non-Ceiling Height 3900
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 13
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 266
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 15
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 17
Altimeter Setting at event time (in. Hg) 29.64
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 17373
NTSB Notification Source FAA, ANC ROC
NTSB Notification Date Sep 3 2004 12:00AM
NTSB Notification Time 1400
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 30 2005 6:20AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Anchorage

Aircraft Involved

Aircraft #1

Aircraft Registration Number N82353
NTSB Number ANC04LA103
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-18-150
Aircraft Series Identifier --
Aircraft Serial Number 18-7809178
Certified Max Gross Weight 1750
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 9 2004 12:00AM
Airframe hours since last inspection 10
Airframe Hours 636
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Robert D. Swenson
Aircraft Owner Street Address --
Aircraft Owner City Anchorage
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode --
Operator is an individual? No
Operator Name Eric A. Swenson
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code MRI
Departure City Anchorage
Departure State AK
Departure Country USA
Departure Time --
Departure Time Zone ADT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Landing - roll
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record --
User who most recently changed record --
Since inspection or accident Last Inspection
Event Location Runway Number and Location 03
Runway Length 2000
Runway Width 60
Sight Seeing flight No
Air Medical Flight No
Medical Flight --