Brownwood Municipal Airport
Aircraft Accident/Incident Report

Early, Texas 76802
Sunday, April 17, 2005 7:10 CDT

NTSB Narrative Summary Released at Completion of Accident

A 7,378-hour Airline Transport Pilot (ATP) reported that they had just departed the airport and established a cruise-climb, with a 752-hour private pilot at the controls, and one passenger in the rear of the airplane. During the cruise-climb the engine went to full rpm, and then the ATP noticed that the engine oil pressure indicated zero. During the attempted return to the airport, the engine seized and the private pilot turned the controls over to the ATP. The ATP executed a forced landing in a field 4-miles east of the departure airport. Examination of the engine by an NTSB investigator revealed that the oil filter was improperly installed, and the O-ring at the base of the filter was broken. Additionally, the oil filter's adapter plate was found cracked, which allowed the engine oil to be pumped overboard while in flight.

NTSB Probable Cause Narrative

A loss of engine power due to the improper installation of the oil filter resulting in oil starvation and eventual seizure of the engine. A contributing factor was the lack of suitable terrain for the forced landing.

Event Information

Type of Event Accident
Event Date 4/17/2005
Event Day of the Week Sunday
Time of Event 710
Event Time Zone Central Daylight Time
Event City Early
Event State TEXAS
Event Country --
Zipcode of the event site 76802
Event Date Year 2005
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 314737N
Event Location Longitude 0985740W
Event Location Airport Brownwood Municipal
Event Location Nearest Airport ID BWD
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 3
Degrees magnetic from airport --
Airport Elevation 1380
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 705 Central Daylight Time
Direction of event from weather observation facility (degrees) 360
Weather Observation Facility ID BWD
Elevation of weather observation facility 1387
Distance of event from weather observation facility (units?) 3
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) 15
Dew Point at event time (in degress fahrenheit) 14
Wind Direction (degrees magnetic) 140
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 4
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.23
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) 17948
NTSB Notification Source FAA Comm Center
NTSB Notification Date Apr 17 2005 12:00AM
NTSB Notification Time 910
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 7 2005 10:33AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Fort Worth FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4311S
NTSB Number DFW05LA105
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 Beech
Aircraft Model A36
Aircraft Series Identifier --
Aircraft Serial Number E-684
Certified Max Gross Weight 3600
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 6
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Feb 9 2005 12:00AM
Airframe hours since last inspection 60
Airframe Hours 5806
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name AIT Services, Inc
Aircraft Owner Street Address 4306 Hwy 377 South
Aircraft Owner City Brownwood
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 76801
Operator is an individual? Yes
Operator Name Michael Stone
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 4110 Glenwood
Operator City Brownwood
Operator State TX
Operator Country USA
Operator Zip code 76801
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) Business
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code BWD
Departure City Brownwood
Departure State TX
Departure Country USA
Departure Time 710
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code MBT
Destination City MURFREESBORO
Destination State TN
Destination Country USA
Specific Phase of Flight Takeoff - initial climb
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record May 4 2005 4:48PM
User who most recently changed record CASH
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 --