Aircraft Accident/Incident Report

Bulverde, Texas 78163
Friday, September 4, 1987 22:45 CDT

NTSB Narrative Summary Released at Completion of Accident

AFTER LEVELING AT 5500', THE STANDBY POWER ANNUNCIATOR LIGHT ILLUMINATED, FOLLOWED BY LOSS OF OIL PRESSURE. THE PLT TURNED BACK TOWARD THE ARPT, BUT THERE WAS A PROGRESSIVE LOSS OF ENG POWER & THE PROP WENT TO A FEATHERED PSN. DRG AN EMERG LANDING AT NIGHT, THE ACFT HIT A POWER LINE & TREES, THEN CRASHED. DRG AN ENG TEARDOWN, DISASSEMBLY OF THE REDUCTION GEARBOX SCAVENGE PUMP REVEALED THAT A RETAINING NUT & TANG WASHER (W/I THE SCAVENGE PUMP) HAD BACKED OFF & LODGED BTN THE SPUR GEARS, WHICH RESULTED IN A SHEARED SCAVENGE PUMP DRIVE SHAFT. IN TURN, THIS RESULTED IN THE LOSS OF OIL PRESSURE & ALLOWED THE PROP TO FEATHER.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 9/4/1987
Event Day of the Week Friday
Time of Event 2245
Event Time Zone Central Daylight Time
Event City BULVERDE
Event State TEXAS
Event Country --
Zipcode of the event site 78163
Event Date Year 1987
Event Date Month 9
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 Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 2155
Direction of event from weather observation facility (degrees) 170
Weather Observation Facility ID SAT
Elevation of weather observation facility 809
Distance of event from weather observation facility (units?) 15
Time Zone of the weather observation
Lighting Conditions Night/Bright
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) 28
Dew Point at event time (in degress fahrenheit) 15
Wind Direction (degrees magnetic) 130
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 2794
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1660
NTSB Notification Source --
NTSB Notification Date Sep 4 1987 12:00AM
NTSB Notification Time 2235
Fiche Number and/or location -used to find docket information 34866
Date of most recent change to record Dec 13 2000 2:49PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N807LA
NTSB Number FTW87FA208
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 208
Aircraft Series Identifier 208
Aircraft Serial Number 208A20800026
Certified Max Gross Weight 8000
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection AAIP
Date of Last Inspection Aug 17 1987 12:00AM
Airframe hours since last inspection 47
Airframe Hours 222
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name MARTINAIR INC.
Aircraft Owner Street Address 2850 BURBANK
Aircraft Owner City DALLAS
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 75235
Operator is an individual? --
Operator Name MARTINAIR
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 2850 BURBANK
Operator City DALLAS
Operator State TX
Operator Country
Operator Zip code 75235
Operator Code
Owner has at least one certificate Yes - certificate holder
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 Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Cargo
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code SAT
Departure City SAN ANTONIO
Departure State TX
Departure Country
Departure Time 2230
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code DAL
Destination City DALLAS
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 --