Aircraft Accident/Incident Report

Santa Teresa, New Mexico 88008
Sunday, April 5, 1998 10:00 MDT

NTSB Narrative Summary Released at Completion of Accident

During a descent for landing with the power set at 23 inches of manifold pressure and 2,300 rpm, there was a loud noise, and something was observed to come out of the cowling. This was followed by a sudden loss of engine power, severe engine vibration, and light blue smoke in the cockpit. The pilots landed on a dirt road, but the airplane struck a sand dune, bounced, and nosed over. Postaccident engine examination disclosed the #1 piston had broken in half. The top half of the piston remained in the upper (outer) portion of the #1 cylinder. The bottom half of the piston was destroyed. The connecting rod and the cap bolt had separated. The camshaft and its splined end (where it attached to the oil pump) were damaged, and the oil pump had seized. There was 'necking down' of the rod cap bolts, consistent with tension overload. The engine had accrued 1,464.7 hours of flight time since new, and 915.1 hours of flight time since major overhaul.

NTSB Probable Cause Narrative

failure of the number 1 piston, which resulted in loss of engine power and a subsequent forced landing. The lack of suitable terrain for a forced landing was a related factor.

Event Information

Type of Event Accident
Event Date 4/5/1998
Event Day of the Week Sunday
Time of Event 1000
Event Time Zone Mountain Daylight Time
Event City SANTA TERESA
Event State NEW MEXICO
Event Country --
Zipcode of the event site 88008
Event Date Year 1998
Event Date Month 4
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 956 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 81
Weather Observation Facility ID ELP
Elevation of weather observation facility 3956
Distance of event from weather observation facility (units?) 20
Time Zone of the weather observation MDT
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) 17
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 250
Variable Wind Indicator Unknown
Wind Speed (knots) 4
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 5037
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 2
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 106
NTSB Notification Source --
NTSB Notification Date Apr 6 1998 12:00AM
NTSB Notification Time 1300
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 11:07AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N591DC
NTSB Number FTW98LA173
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 Cessna
Aircraft Model T210L
Aircraft Series Identifier T210L
Aircraft Serial Number 210-60147
Certified Max Gross Weight 3800
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 1997 12:00AM
Airframe hours since last inspection 50
Airframe Hours 1458
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name BRYAN R. SANDERSON
Aircraft Owner Street Address 6213 BRISA DEL MAR
Aircraft Owner City EL PASO
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 79912
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 5T6
Departure City
Departure State NM
Departure Country
Departure Time 800
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code 5T6
Destination City
Destination State
Destination Country
Specific Phase of Flight Emergency landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
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 --