Aircraft Accident/Incident Report

New Braunfels, Texas 78132
Tuesady, February 8, 2000 13:30 CST

NTSB Narrative Summary Released at Completion of Accident

The student pilot made several takeoffs and landings prior to departing the traffic pattern. Witnesses reported observing the airplane flying at an altitude of approximately 20 feet above the trees, and they reported that they did not hear the airplane's engine running. A witness stated that the airplane flew by her in a level attitude, and after the airplane cleared some power lines it started to descend. It then appeared that the airplane's left wing impacted some trees before it nosed down into the trees. Continuity was established to all of the 1968-model Beech Musketeer's flight controls. Examination of the engine oil pressure and suction screens revealed the presence of metal particles, shavings and flakes. The oil pressure relief valve plug, spring, and ball were removed. The ball had metal adhering to it, and the ball seat was contaminated with metal, which according to the manufacturer representative, "may have prevented the ball from contacting the seat." A large amount of sludge was found inside of the crankshaft. A teardown examination of the engine revealed evidence of a lack of lubrication. A review of the airplane's maintenance records revealed that the engine's last oil change was on July 2, 1999, at a total airplane and engine time of 1,665.0 hours. There was no record that the oil suction screen or oil pressure screens were cleaned during that oil change. The last documented cleaning of the oil screens was December 1, 1996. At the time of the accident, the airplane had accumulated a total time of 1,680.92 hours and the engine had never undergone an overhaul. The engine's operating manual states that "at each 100 hour inspection remove suction screen. Inspect for metal particles; clean and reinstall. Inspect and clean pressure screen every 25 hours."

NTSB Probable Cause Narrative

the seizure of the engine while maneuvering due to the oil pressure relief valve plug ball seat becoming contaminated with metal. Contributing factors were the inadequate engine maintenance, and the lack of suitable terrain for the forced landing.

Event Information

Type of Event Accident
Event Date 2/8/2000
Event Day of the Week Tuesday
Time of Event 1330
Event Time Zone Central Standard Time
Event City NEW BRAUNFELS
Event State TEXAS
Event Country --
Zipcode of the event site 78132
Event Date Year 2000
Event Date Month 2
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1351 Central Standard Time
Direction of event from weather observation facility (degrees) 142
Weather Observation Facility ID BAZ
Elevation of weather observation facility 651
Distance of event from weather observation facility (units?) 7
Time Zone of the weather observation CST
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) 10
Air Temperature at event time (in degrees celsius) 73
Dew Point at event time (in degress fahrenheit) 36
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Variable
Wind Speed (knots) 3
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
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) 10453
NTSB Notification Source --
NTSB Notification Date Feb 8 2000 12:00AM
NTSB Notification Time 1450
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Sep 20 2001 2:05PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4014T
NTSB Number FTW00FA080
Missing Aircraft Indicator N
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 Beech
Aircraft Model B23
Aircraft Series Identifier B23
Aircraft Serial Number M-1121
Certified Max Gross Weight 2300
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 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Oct 6 1999 12:00AM
Airframe hours since last inspection 8
Airframe Hours 1681
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name MICHAEL S. SOOTER
Aircraft Owner Street Address 447 BOBWHITE LANE
Aircraft Owner City NEW BRAUNFELS
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 78132
Operator is an individual? --
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? No
Certified for Part 133 or 137 Operation Unknown
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) Instructional
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code BAZ
Departure City
Departure State
Departure Country
Departure Time 1230
Departure Time Zone CST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Aug 22 2001 4:00AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --