Aircraft Accident/Incident Report

Moriarty, New Mexico 87035
Saturday, March 12, 1988 12:15 MST

NTSB Narrative Summary Released at Completion of Accident

WITNESSES HEARD THE ACFT ENG SOUND INCREASE DRAMATICALLY AS THE ACFT PASSED OVER A GEN AVIATION AIRPORT. THE ACFT WAS SEEN BY ANOTHER WITNESS AT LOW ATL, ESTIMATED TO BE ABOUT 200 FT, AS THE NOSE PITCHED UP. THE ACFT THEN ENTERED A SPIN AND IMPACTED THE GROUND. THE INVESTIGATION REVEALED THAT THE WOODEN PROPELLER HAD SEPARATED IN FLIGHT AND IT WAS LATER FOUND NEAR WHERE THE FIRST WITNESS HEARD THE ENG SOUND INCREASE. EXAMINATION OF THE PROP SHOW ALL THE BOLTS THAT SECURE THE PROP TO THE CRANKSHAFT WERE SHEARED. THE EXAMINATION FURTHER REVEALED THAT THERE WAS NO REINFORCING PLATE BETWEEN THE BOLT HEADS AND THE WOODEN PROP HUB, ONLY THE FRONT SPINNER BULKHEAD. THE FRONT SPINNER BULKHEAD SHOWED WEAR AS DID THE BOLT HOLES IN THE PROP HUB.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 3/12/1988
Event Day of the Week Saturday
Time of Event 1215
Event Time Zone Mountain Standard Time
Event City MORIARTY
Event State NEW MEXICO
Event Country --
Zipcode of the event site 87035
Event Date Year 1988
Event Date Month 3
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 1242 Mountain Standard Time
Direction of event from weather observation facility (degrees) 30
Weather Observation Facility ID LVS
Elevation of weather observation facility 6866
Distance of event from weather observation facility (units?) 62
Time Zone of the weather observation MST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 0
Air Temperature at event time (in degrees celsius) 10
Dew Point at event time (in degress fahrenheit) -12
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Unknown
Wind Speed (knots) 20
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 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency FAA
NTSB Docket Number (internal use) 200
NTSB Notification Source --
NTSB Notification Date Mar 12 1988 12:00AM
NTSB Notification Time 1300
Fiche Number and/or location -used to find docket information 35818
Date of most recent change to record Dec 13 2000 11:37AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N185SA
NTSB Number DEN88DQA03
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name SURLINE
Aircraft Model SIDEWINDER
Aircraft Series Identifier SIDEWINDER
Aircraft Serial Number 212378
Certified Max Gross Weight 1550
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
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 Unknown
Date of Last Inspection --
Airframe hours since last inspection 85
Airframe Hours 85
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name JOHN SURLINE
Aircraft Owner Street Address 6938 W. ROXBURY AVE.
Aircraft Owner City LITTLETON
Aircraft Owner State CO
Aircraft Owner Country
Aircraft Owner Zipcode 80123
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 RTN
Departure City RATON
Departure State NM
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt --
Destination Airport Code TCS
Destination City TRUTH OR CONSEQ
Destination State NM
Destination Country
Specific Phase of Flight Descent
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 --