Aircraft Accident/Incident Report

Ft. Collins, Colorado 80522
Monday, July 13, 1992 16:29 MDT

NTSB Narrative Summary Released at Completion of Accident

FOLLOWING TAKEOFF, WHILE CONDUCTING A LOCAL TRAINING FLIGHT, THE ENGINE BEGAN TO RUN ROUGH AT AN ALTITUDE OF APPROXIMATELY 300 FEET AGL. THE FLIGHT INSTRUCTOR TOOK CONTROL AND CONDUCTED A FORCED LANDING IN A FIELD. TOUCH DOWN WAS HARD AND THE AIRCRAFT NOSED OVER. EXAMINATION OF THE ENGINE REVEALED TWO CYLINDERS WITH EXHAUST VALVES STUCK OPEN. EVIDENCE OF OVERHEAT WAS PRESENT AND ALL ENGINE COOLING DEVICES WERE PROPERLY IN PLACE. THE OPERATOR HAD BRIEFED ALL HIS INSTRUCTORS ON LEANING TO PEAK POWER DUE TO HIGH ALTITUDE PERFORMANCE DEGRADATION.

NTSB Probable Cause Narrative

IMPROPER RATE OF DESCENT AND LACK OF FLARE WHILE CONDUCTING A FORCED LANDING. FACTORS WERE: PARTIAL POWER LOSS DUE TO STUCK EXHAUST VALVES CAUSED BY ENGINE OVERHEAT FROM IMPROPER LEANING.

Event Information

Type of Event Accident
Event Date 7/13/1992
Event Day of the Week Monday
Time of Event 1629
Event Time Zone Mountain Daylight Time
Event City FT. COLLINS
Event State COLORADO
Event Country --
Zipcode of the event site 80522
Event Date Year 1992
Event Date Month 7
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 Witness
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 22000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 60
Air Temperature at event time (in degrees celsius) 26
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 7000
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) 1911
NTSB Notification Source --
NTSB Notification Date Jul 13 1992 12:00AM
NTSB Notification Time 1615
Fiche Number and/or location -used to find docket information 46751
Date of most recent change to record Dec 11 2000 3:04PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N66315
NTSB Number DEN92LA073
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 150
Aircraft Series Identifier 150
Aircraft Serial Number 15075984
Certified Max Gross Weight 1600
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 100 Hour
Date of Last Inspection Jun 8 1992 12:00AM
Airframe hours since last inspection 92
Airframe Hours 7270
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name
Aircraft Owner Street Address
Aircraft Owner City
Aircraft Owner State
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name GATES, ROBERT L.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 200 RACQUETTE DR.
Operator City FT. COLLINS
Operator State CO
Operator Country
Operator Zip code 80524
Operator Code CKOA
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 Yes
Departure Point Same as Event Yes
Departure Airport Code 3V5
Departure City
Departure State
Departure Country
Departure Time 1545
Departure Time Zone MDT
Destination Same as Local Flt crash at destination city
Destination Airport Code 3V5
Destination City
Destination State
Destination Country
Specific Phase of Flight Climb
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
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 --