Aircraft Accident/Incident Report

Kiowa, Colorado 80117
Tuesady, September 18, 2012 15:32 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that as the airplane climbed to about 10,000 feet mean sea level after takeoff, the engine began a “moderate violent shaking.” The oil pressure then decreased rapidly, oil sprayed on the windshield, and the engine seized. The pilot made a forced landing in a hay field, during which the airplane’s nose gear collapsed and the left wing rear spar was bent. Examination of the engine revealed corrosion and pitting on the cylinder walls, camshaft, and lifters, which likely contributed to accelerated wear of engine components and the subsequent failure of the front crankshaft seal. The airplane had annual inspections in May 2011 and August 2012, but no records of maintenance could be located for about a 4 year period before the May 2011 inspection. The airplane had accumulated only about 38 hours in the previous 5 years, including less than 2 hours in the 1 year preceding the accident. The observed engine wear and damage was consistent with engine operations after an extended period of inactivity; however, the wear and damage could have been detected during at least the August 2012 inspection. The circumstances of the engine failure were consistent with a mechanical failure due to unrecognized or unrepaired corrosion in the engine.

NTSB Probable Cause Narrative

A catastrophic engine failure due to unrecognized and unrepaired corrosion within the engine, which was consistent with engine operations after an extended period of inactivity.

Event Information

Type of Event Accident
Event Date 9/18/2012
Event Day of the Week Tuesday
Time of Event 1532
Event Time Zone Mountain Daylight Time
Event City Kiowa
Event State COLORADO
Event Country --
Zipcode of the event site 80117
Event Date Year 2012
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 391438N
Event Location Longitude 1042211W
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 1553 Mountain Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID KAPA
Elevation of weather observation facility 5885
Distance of event from weather observation facility (units?) 26
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 9000
Sky/Lowest/Cloud Conditions Few
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) 25
Dew Point at event time (in degress fahrenheit) 2
Wind Direction (degrees magnetic) 10
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 8
Wind Velocity Indicator --
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.18
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report KAPA 182153Z 01008KT 10SM FEW090 25/02 A3018 RMK A
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) 31681
NTSB Notification Source FAA ANM ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jun 12 2013 5:27PM
User who most recently changed record bakd
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N188SR
NTSB Number CEN12FA653
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
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-46-350P
Aircraft Series Identifier --
Aircraft Serial Number 4622052
Certified Max Gross Weight 4300
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats 2
Cabin Crew Seats --
Passenger Seats 4
Total number of seats on the aircraft 6
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 8 2012 12:00AM
Airframe hours since last inspection --
Airframe Hours 1932
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type Unknown
Aircraft Owner Name Don Woroner
Aircraft Owner Street Address 3608 Knapp Rd.
Aircraft Owner City Ocean Springs
Aircraft Owner State MS
Aircraft Owner Country USA
Aircraft Owner Zipcode 39564-9341
Operator is an individual? No
Operator Name Don Woroner
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City Ocean Springs
Operator State MS
Operator Country USA
Operator Zip code 39564-9341
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
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 KAPA
Departure City Englewood
Departure State CO
Departure Country USA
Departure Time 1515
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code KPQL
Destination City Pascagoula
Destination State MS
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 29 2013 10:31PM
User who most recently changed record scoa
Since inspection or accident Last Inspection
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight --
Air Medical Flight No
Medical Flight --