Private Airstrip Airport
Aircraft Accident/Incident Report

Spiritwood, North Dakota 58481
Wednesday, August 3, 1994 15:30 CDT

NTSB Narrative Summary Released at Completion of Accident

Upon landing on the private airstrip, the airplane started to shudder and veered to the left. The pilot tried to regain directional control by applying the right brake and increasing power, but the pilot states these actions only accelerated the turn. The airplane ground looped and came to rest on the left side of the runway. A postaccident investigation revealed eight inches of the vertical fuselage tubing and the aft diagonal tubing in the empennage near the tailwheel assembly were broken in several locations. Rust was observed on the inside of the tubing wall near the breaks.

NTSB Probable Cause Narrative

the failure of the fuselage tubing in the empennage.

Event Information

Type of Event Accident
Event Date 8/3/1994
Event Day of the Week Wednesday
Time of Event 1530
Event Time Zone Central Daylight Time
Event City SPIRITWOOD
Event State NORTH DAKOTA
Event Country --
Zipcode of the event site 58481
Event Date Year 1994
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport PRIVATE AIRSTRIP
Event Location Nearest Airport ID NONE
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 --
Weather Briefing Completeness Not pertinent
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 18
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 345
Variable Wind Indicator Unknown
Wind Speed (knots) 2
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1465
NTSB Notification Source --
NTSB Notification Date Aug 10 1994 12:00AM
NTSB Notification Time 830
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 11:58AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6568Z
NTSB Number CHI94LA272
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-25
Aircraft Series Identifier PA-25
Aircraft Serial Number 25-2116
Certified Max Gross Weight 2900
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 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jun 22 1994 12:00AM
Airframe hours since last inspection 39
Airframe Hours 5680
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name AG AIR, INC.
Aircraft Owner Street Address P.O. BOX 5
Aircraft Owner City SPIRITWOOD
Aircraft Owner State ND
Aircraft Owner Country
Aircraft Owner Zipcode 58103
Operator is an individual? --
Operator Name AG AIR, INC.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address P.O. BOX 5
Operator City SPIRITWOOD
Operator State ND
Operator Country
Operator Zip code 58103
Operator Code
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Agriculture
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Unknown
Indicates Domestic or International Flight Unknown
Operator carrying Pax/Cargo/Mail Unknown
Type of Flying (Per_Bus / Primary) Aerial Application
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code NONE
Departure City
Departure State
Departure Country
Departure Time 1000
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code NONE
Destination City
Destination State ND
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 36
Runway Length 2640
Runway Width 65
Sight Seeing flight No
Air Medical Flight No
Medical Flight --