Aircraft Accident/Incident Report

Loxley, Alabama 36551
Monday, April 11, 2011 12:16 CDT

NTSB Narrative Summary Released at Completion of Accident

According to the pilot, during cruise flight the engine began to run rough and lose power. He heard a loud metallic sound; the engine vibrated violently and then lost power. He performed a forced landing to a farm field, and the airplane nosed over in the soft terrain, resulting in substantial damage to the wings. A postaccident inspection revealed that the crankshaft would not rotate. An internal inspection of the cylinders and spark plugs did not reveal a reason for the power loss. The oil system was examined and there were large amounts of metal particles in the oil. Due to a lack of suitable equipment and facilities, further disassembly of the engine was not attempted.

NTSB Probable Cause Narrative

A loss of engine power due to internal failure.

Event Information

Type of Event Accident
Event Date 4/11/2011
Event Day of the Week Monday
Time of Event 1216
Event Time Zone Central Daylight Time
Event City Loxley
Event State ALABAMA
Event Country --
Zipcode of the event site 36551
Event Date Year 2011
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 303503N
Event Location Longitude 0874717W
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 Central Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID BFM
Elevation of weather observation facility 26
Distance of event from weather observation facility (units?) 25
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height 6500
Lowest Non-Ceiling Height 1300
Sky/Lowest/Cloud Conditions Few
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 26
Dew Point at event time (in degress fahrenheit) 22
Wind Direction (degrees magnetic) 170
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 13
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 21
Altimeter Setting at event time (in. Hg) 29.95
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 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 28992
NTSB Notification Source FAA Southern ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Nov 4 2011 8:42PM
User who most recently changed record johb
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N122AN
NTSB Number ERA11LA242
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 WSK-MIELEC
Aircraft Model AN-2
Aircraft Series Identifier --
Aircraft Serial Number 1G176-31
Certified Max Gross Weight 12100
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats 2
Cabin Crew Seats --
Passenger Seats 2
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Sep 1 2010 12:00AM
Airframe hours since last inspection 21
Airframe Hours 10371
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name Vertol Systems Company, Inc.
Aircraft Owner Street Address P.O. Box 230756
Aircraft Owner City Tigard
Aircraft Owner State OR
Aircraft Owner Country USA
Aircraft Owner Zipcode 97281
Operator is an individual? No
Operator Name Vertol Systems Company, Inc.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address P.O. Box 230756
Operator City Tigard
Operator State OR
Operator Country USA
Operator Zip code 97281
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) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code DTS
Departure City Ft Walton Beach
Departure State FL
Departure Country USA
Departure Time 1118
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code DRI
Destination City De Ridder
Destination State LA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 30 2011 10:17AM
User who most recently changed record kenj
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --