Aircraft Accident/Incident Report

Lamar, Colorado 81052
Wednesday, April 8, 1987 15:45 MDT

NTSB Narrative Summary Released at Completion of Accident

THE AIRCRAFT HAD COMPLETED A FORMATION AERIAL APPLICATION OPERATION AND WERE IN THE PROCESS OF SINGLE AIRPLANE SPRAYING AROUND THE PERIMETERS OF A FIELD. THEY COLLIDED AT 10 FEET ABOVE THE GROUND ON PERPENDICULAR FLIGHT PATHS, DESCENDED OUT OF CONTROL AND IMPACTED IN THE LEVEL FIELD.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 4/8/1987
Event Day of the Week Wednesday
Time of Event 1545
Event Time Zone Mountain Daylight Time
Event City LAMAR
Event State COLORADO
Event Country --
Zipcode of the event site 81052
Event Date Year 1987
Event Date Month 4
MidAir Collision Indicator Yes
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 1633 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID LHX
Elevation of weather observation facility 4238
Distance of event from weather observation facility (units?) 52
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) 35
Air Temperature at event time (in degrees celsius) 18
Dew Point at event time (in degress fahrenheit) -6
Wind Direction (degrees magnetic) 210
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 5185
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 1
Injury Total Minor --
Injury Total None --
Injury Total Serious 1
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 492
NTSB Notification Source --
NTSB Notification Date Apr 8 1987 12:00AM
NTSB Notification Time 1630
Fiche Number and/or location -used to find docket information 33553
Date of most recent change to record Dec 13 2000 2:13PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft #2

Aircraft Registration Number N8369 N4941Y
NTSB Number DEN87FA091A DEN87FA091B
Missing Aircraft Indicator N N
Federal Aviation Reg. Part Part 137: Agricultural Part 137: Agricultural
Type of Flight Plan filed None None
Flight plan Was Activated? -- --
Damage Destroyed Destroyed
Aircraft Fire None None
Aircraft Explosion None None
Aircraft Manufacturer's Full Name GRUMMAN PIPER
Aircraft Model G-164A PA-25-260
Aircraft Series Identifier G-164A PA-25-260
Aircraft Serial Number 864 25-4742
Certified Max Gross Weight 4500 2900
Aircraft Category Airplane Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No No
Flight Crew Seats -- --
Cabin Crew Seats -- --
Passenger Seats -- --
Total number of seats on the aircraft 1 1
Number of Engines 1 1
Fixed gear or retractable gear Fixed Fixed
Aircraft, Type of Last Inspection Annual Annual
Date of Last Inspection Feb 2 1984 12:00AM May 10 1986 12:00AM
Airframe hours since last inspection 528 --
Airframe Hours 4214 1583
ELT Installed No No
ELT Activated No No
ELT Aided Location of Event Site No No
ELT Type -- --
Aircraft Owner Name ALLEN H. TINNES ALLEN H. TINNES
Aircraft Owner Street Address P.O. BOX 321 P.O. BOX 321
Aircraft Owner City LAMAR LAMAR
Aircraft Owner State CO CO
Aircraft Owner Country
Aircraft Owner Zipcode 81052 81052
Operator is an individual? -- --
Operator Name
Operator Same as Owner? Yes Yes
Operator Is Doing Business As -- --
Operator Address Same as Owner? Yes Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate Yes - certificate holder Yes - certificate holder
Other Operator of large aircraft? No No
Certified for Part 133 or 137 Operation Agriculture Agriculture
Operator Certificate Number -- --
Indicates whether an air carrier operation was scheduled or not Unknown Unknown
Indicates Domestic or International Flight Unknown Unknown
Operator carrying Pax/Cargo/Mail Unknown Unknown
Type of Flying (Per_Bus / Primary) Aerial Application Aerial Application
Second Pilot on Board No No
Departure Point Same as Event No No
Departure Airport Code
Departure City LAMAR LAMAR
Departure State CO CO
Departure Country
Departure Time 1500 1500
Departure Time Zone MDT MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Maneuvering Maneuvering
Report sent to ICAO? -- --
Evacuation occurred -- --
Date of most recent change to record Jan 2 2001 10:35AM Jan 2 2001 10:35AM
User who most recently changed record dbo dbo
Since inspection or accident -- --
Event Location Runway Number and Location 0 0
Runway Length 0 0
Runway Width 0 0
Sight Seeing flight No No
Air Medical Flight No No
Medical Flight -- --