Aircraft Accident/Incident Report

Johnson, Nebraska 68378
Wednesday, July 4, 2007 11:16 CDT

NTSB Narrative Summary Released at Completion of Accident

The externally braced high wing airplane impacted terrain following an in-flight separation of the left wing while maneuvering during a ferry flight. A post impact ground fire that engulfed the airplane in flames occurred 10 -15 seconds after impact according to a witness. A witness who was an acquaintance to the pilot said that the pilot "was in the process of purchasing the plane." The witness reported that the owner advised the pilot that the airplane had not flown in about four years and that the engine had not been started in about six months. The pilot flew the airplane for about 30 minutes and parked the airplane in a hangar. The witness reported that the pilot was aware that the airplane did not have a current annual inspection. The witness said that the pilot came back on the day of the accident to fly the airplane to another airport for an annual inspection. The witness saw the airplane depart in the direction of the pilot's home. Another witness saw that "a portion of the planes wing broke away from the plane." Airworthiness Directive (AD) 99-01-05 was accomplished about four years prior. That AD contained a section for repetitive 12 calendar month inspections of the wing's lift struts. The AD was issued to "prevent in-flight separation of the wing from the airplane caused by corroded wing lift struts or cracked wing lift strut forks, which could result in loss of control of the airplane." An on-scene examination of the wreckage revealed the left wing's forward strut separated about eight inches above its fork bolt. The inside of that strut was corroded. No other pre-impact anomalies were detected. No airplane logbook entry was found for the required special flight permit to ferry the airplane for its annual inspection.

NTSB Probable Cause Narrative

The failure of the left wing's lift strut, which resulted in the separation of the left wing, and the subsequent airplane control not being possible. Factors were the overdue annual inspection, the overdue compliance with an Airworthiness Directive on the lift strut, the corroded lift strut, and not following required procedures for ferry permits by the owner/pilot.

Event Information

Type of Event Accident
Event Date 7/4/2007
Event Day of the Week Wednesday
Time of Event 1116
Event Time Zone Central Daylight Time
Event City Johnson
Event State NEBRASKA
Event Country --
Zipcode of the event site 68378
Event Date Year 2007
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 402357N
Event Location Longitude 0961017W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1110 Central Daylight Time
Direction of event from weather observation facility (degrees) 45
Weather Observation Facility ID KAFK
Elevation of weather observation facility 1162
Distance of event from weather observation facility (units?) 19
Time Zone of the weather observation CDT
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) 27
Dew Point at event time (in degress fahrenheit) 18
Wind Direction (degrees magnetic) 30
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.02
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report KAFK 041610Z AUTO 03010KT 10SM CLR 27/18 A3002
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 23179
NTSB Notification Source FAA
NTSB Notification Date Jul 4 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 31 2008 11:52AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Federal Aviation Administration - Lincoln FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N3737A
NTSB Number CHI07LA191
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 Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-22-135
Aircraft Series Identifier --
Aircraft Serial Number 22-1980
Certified Max Gross Weight 1950
Aircraft Category Airplane
Aircraft Registration Class --
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 Nov 1 2002 12:00AM
Airframe hours since last inspection --
Airframe Hours 3815
ELT Installed --
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name Darrell Ensor
Aircraft Owner Street Address --
Aircraft Owner City Johnson
Aircraft Owner State NE
Aircraft Owner Country USA
Aircraft Owner Zipcode 68378
Operator is an individual? Yes
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) Ferry
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code 0G3
Departure City Tecumseh
Departure State NE
Departure Country USA
Departure Time 1100
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code FNB
Destination City FALLS CITY
Destination State NE
Destination Country USA
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Feb 27 2008 4:58PM
User who most recently changed record BOWL
Since inspection or accident Last Inspection
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --