Aircraft Accident/Incident Report

Uvalde, Texas 78801
Monday, September 1, 2008 14:00 CDT

NTSB Narrative Summary Released at Completion of Accident

The engine of the agricultural airplane lost power while it was maneuvering at low altitude. The airplane impacted thick vegetation and terrain, causing substantial damage to the right wing, nose and tail. A subsequent teardown examination of the engine showed little evidence that the engine was operating at the time of impact, but the ingestion of vegetation into the combustor and the torsional failure of the torsion shaft suggests that there was some rotation of the engine at the time of impact. The engine examination also revealed that several turbine rotors had damage and missing blade material due to short term operation of the engine at an over temperature condition. There was evidence that the rotors had been operating for several hours after the over temperature event that caused the stress rupture of the blades. Further, the examination showed that the first stage turbine rotor and the prop pitch control cam did not conform to Honeywell specifications and were not authorized replacement parts, and a previous weld repair on the engine combustor plenum did not conform to standard practices for weld repairs on aerospace parts.

NTSB Probable Cause Narrative

A total loss of engine power due to the improper use of unauthorized replacement parts in the engine and repeated operation of the engine in an over-temperature condition.

Event Information

Type of Event Accident
Event Date 9/1/2008
Event Day of the Week Monday
Time of Event 1400
Event Time Zone Central Daylight Time
Event City Uvalde
Event State TEXAS
Event Country --
Zipcode of the event site 78801
Event Date Year 2008
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 292031N
Event Location Longitude 0994219W
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 1328 Central Daylight Time
Direction of event from weather observation facility (degrees) 196
Weather Observation Facility ID KUVA
Elevation of weather observation facility 942
Distance of event from weather observation facility (units?) 10
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) 34
Dew Point at event time (in degress fahrenheit) 19
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.8
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report KUVA 011948z AUTO 00000KT 10SM CLR 34/19 A2980 KU
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 26673
NTSB Notification Source FAA ASW Comm Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Mar 2 2010 11:21AM
User who most recently changed record bowl
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8472V
NTSB Number DFW08LA223
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name ROCKWELL INTERNATIONAL
Aircraft Model S-2R
Aircraft Series Identifier --
Aircraft Serial Number 2232R
Certified Max Gross Weight 6900
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats 1
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Apr 14 2008 12:00AM
Airframe hours since last inspection 432
Airframe Hours 7935
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name FARM & RANCH AERIAL SERVICE INC
Aircraft Owner Street Address 947 CHUDALLA RD
Aircraft Owner City WHARTON
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 77488-7028
Operator is an individual? No
Operator Name LINDEMAN, RUSTY
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 732 CR 312
Operator City D'Hanis
Operator State TX
Operator Country USA
Operator Zip code 78850
Operator Code UXRG
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Agriculture
Operator Certificate Number UXRG492U
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) Aerial Application
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code 4TS8
Departure City D'Hanis
Departure State TX
Departure Country USA
Departure Time --
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code 4TS8
Destination City D'Hanis
Destination State TX
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Feb 24 2010 9:41AM
User who most recently changed record latt
Since inspection or accident Time of Accident
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --