Nampa Municipal Airport
Aircraft Accident/Incident Report

Nampa, Idaho 83702
Friday, April 23, 2004 13:30 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot in the left seat, who had purchased the aircraft the day prior to the accident, started the flight by making two takeoffs and two full-stop landings. Both of his takeoff rolls were uneventful with no directional control difficulties, but because he was having trouble with directional control during landing, it was decided that the more experienced tail wheel pilot in the right seat would perform a takeoff and landing, during which the pilot in the left seat would keep his hands and feet on the controls in order to feel the control inputs made by the other pilot. The pilot in the right seat experienced "some difficulty" during the takeoff, but he was unsure if it was related to having the left seat pilot on the controls with him. He then made a landing, touching down near the centerline, and pulling the yoke to the "full back" position, while making sure the engine was at idle. Although the initial touchdown was uneventful, soon thereafter the aircraft veered to the right, and the pilot applied left rudder in an attempt to return it to the runway heading. Seeing that the application of rudder alone was not adequate, the pilot applied heavy left brake, but the aircraft continued to the right and exited the right side of the runway. As the aircraft exited the runway, the right seat pilot began applying right brake also, and soon thereafter the aircraft nosed over onto its back. Inspection and testing of the aircraft did not reveal any indication that there had been a brake malfunction or any anomaly in the rudder/tail wheel steering system that would have created an uncontrollable situation. In addition it was determined that although the right seat pilot had about 25 hours in this make and model airplane, it had been "many years" since he had flown one.

NTSB Probable Cause Narrative

The right seat pilot's failure to maintain directional control during the initial part of the landing roll, and his improper handling of the aircraft (excessive braking) as the aircraft departed the side of the runway. Factors include the pilot's lack of recent experience in this make and model aircraft.

Event Information

Type of Event Accident
Event Date 4/23/2004
Event Day of the Week Friday
Time of Event 1330
Event Time Zone Mountain Daylight Time
Event City Nampa
Event State IDAHO
Event Country --
Zipcode of the event site 83702
Event Date Year 2004
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 433453N
Event Location Longitude 1163123W
Event Location Airport Nampa Municipal
Event Location Nearest Airport ID S67
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 2535
Weather Briefing Completeness --
Investigator's weather source Witness
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 18
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) --
Wind Velocity Indicator Light and Variable
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 17057
NTSB Notification Source FAA Operations Center
NTSB Notification Date Apr 23 2004 12:00AM
NTSB Notification Time 1330
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Dec 28 2004 12:45PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Boise FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8252A
NTSB Number SEA04LA072
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 Cessna
Aircraft Model 170B
Aircraft Series Identifier --
Aircraft Serial Number 25104
Certified Max Gross Weight 2200
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 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Dec 1 2003 12:00AM
Airframe hours since last inspection 68
Airframe Hours 3347
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Dwight R. Magnuson
Aircraft Owner Street Address --
Aircraft Owner City Boise
Aircraft Owner State ID
Aircraft Owner Country USA
Aircraft Owner Zipcode 83702
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
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 Yes
Departure Point Same as Event Yes
Departure Airport Code S67
Departure City Nampa
Departure State ID
Departure Country USA
Departure Time 1315
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code S67
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 Oct 26 2004 4:10PM
User who most recently changed record STAM
Since inspection or accident Time of Accident
Event Location Runway Number and Location 11
Runway Length 5000
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --