Aircraft Accident/Incident Report

Vega, Texas 79092
Monday, August 1, 1988 23:17 CDT

NTSB Narrative Summary Released at Completion of Accident

THE AIRPLANE WAS ON A NIGHT CROSS COUNTRY FLIGHT WHEN ENGINE OIL STARTED TO APPEAR ON THE WINDOWS. THE PILOT WAS UNABLE TO GET THE AIRPLANE TO AN AIRPORT BEFORE THE OIL PRESSURE WENT TO ZERO. AFTER LOSS OF OIL PRESSURE, THE ENGINE STARTED TO VIBRATE, AND THE PROPELLER SEPARATED FROM THE ENGINE. WITH NO FORWARD VISIBILITY AND VERY LITTLE SIDE VISIBILITY, THE PILOT MADE A FORCED LANDING ON A HIGHWAY SERVICE ROAD; HOWEVER, DURING THE LANDING ROLL, THE AIRPLANE IMPACTED HIGHWAY SIGNS AND REFLECTORS. THE PILOT SAID THERE WAS A FIRE ON THE HIGHWAY, BEHIND THE AIRPLANE, BUT IT NEVER REACHED THE AIRPLANE. A TEARDOWN OF THE ENGINE REVEALED A FAILURE OF THE CRANKSHAFT THAT WAS INITIATED BY A PRE-EXISTING FATIGUE CRACK. THERE WAS EVIDENCE THAT OPENING OF THE FATIGUE CRACK LED TO GRADUAL LOSS OF LUBRICATING OIL, THEN SEPARATION OF THE PROPELLER.

NTSB Probable Cause Narrative

UNREPORTED PROPELLER STRIKE.

Event Information

Type of Event Accident
Event Date 8/1/1988
Event Day of the Week Monday
Time of Event 2317
Event Time Zone Central Daylight Time
Event City VEGA
Event State TEXAS
Event Country --
Zipcode of the event site 79092
Event Date Year 1988
Event Date Month 8
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 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Full
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Night/Dark
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) 25
Air Temperature at event time (in degrees celsius) 22
Dew Point at event time (in degress fahrenheit) 16
Wind Direction (degrees magnetic) 170
Variable Wind Indicator Unknown
Wind Speed (knots) 15
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 None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 2250
NTSB Notification Source --
NTSB Notification Date Aug 2 1988 12:00AM
NTSB Notification Time 900
Fiche Number and/or location -used to find docket information 39996
Date of most recent change to record Dec 13 2000 12:03PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N3707Z
NTSB Number FTW88LA142
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 Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name BEECH
Aircraft Model A36TC
Aircraft Series Identifier A36TC
Aircraft Serial Number EA 150
Certified Max Gross Weight 3650
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 Apr 1 1988 12:00AM
Airframe hours since last inspection 76
Airframe Hours 570
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name PETRO JET AVIATION, INC.
Aircraft Owner Street Address P.O. BOX 6441
Aircraft Owner City MIDLAND
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 79711
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) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code DEN
Departure City DENVER
Departure State CO
Departure Country
Departure Time 2130
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code MAF
Destination City MIDLAND
Destination State TX
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --