Greeley-Weld County Airport
Aircraft Accident/Incident Report

Greeley, Colorado 80631
Wednesday, July 31, 2002 16:59 MDT

NTSB Narrative Summary Released at Completion of Accident

The student pilot and flight instructor were departing for his third flight lesson; the density altitude was calculated to be 8,393 feet. The flight instructor said that the student began to level the airplane 5 to 10 seconds after liftoff. He said that he took hold of the yoke and assisted the student in adjusting the airplane's pitch to resume the departure climb, and then gave full aircraft control back to the student. The instructor said that he looked out of the airplane to see if there were any airplanes landing on the cross runway. Suddenly, and without warning, the flight controls went to the full forward position and the plane began to dive directly towards the runway. He said he grabbed the control yoke, but could not arrest the descent before the airplane impacted the runaway. The student pilot was taking a non-approved for flight, prescription medication.

NTSB Probable Cause Narrative

the student pilot's improper handling of the airplane's controls (for reason undetermined), and the inadequate supervision of the flight instructor. A contributing factor was the high density altitude weather condition.

Event Information

Type of Event Accident
Event Date 7/31/2002
Event Day of the Week Wednesday
Time of Event 1659
Event Time Zone Mountain Daylight Time
Event City Greeley
Event State COLORADO
Event Country --
Zipcode of the event site 80631
Event Date Year 2002
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 402609N
Event Location Longitude 1043755W
Event Location Airport Greeley-Weld County Airport
Event Location Nearest Airport ID GXY
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 4697
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1645 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID GXY
Elevation of weather observation facility 4697
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation MDT
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) 37
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 0
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.94
Density Altitude (feet) 8393
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
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) 13953
NTSB Notification Source FAA COMM CTR
NTSB Notification Date Jul 31 2002 12:00AM
NTSB Notification Time 1730
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Sep 30 2003 9:55AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Denver, CO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7383G
NTSB Number DEN02FA084
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 172K
Aircraft Series Identifier --
Aircraft Serial Number 17259083
Certified Max Gross Weight 2300
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 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Apr 1 2002 12:00AM
Airframe hours since last inspection 94
Airframe Hours 7740
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Light Plane Rentals
Aircraft Owner Street Address 601 Crosier Ave
Aircraft Owner City Greeley
Aircraft Owner State CO
Aircraft Owner Country USA
Aircraft Owner Zipcode 80631
Operator is an individual? No
Operator Name Harris Aviation
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 625 Airport Road
Operator City Greeley
Operator State CO
Operator Country USA
Operator Zip code 80631
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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 GXY
Departure City Greeley
Departure State CO
Departure Country USA
Departure Time 1659
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Takeoff
Report sent to ICAO? No
Evacuation occurred --
Date of most recent change to record Jul 14 2003 12:40PM
User who most recently changed record MCBM
Since inspection or accident Time of Accident
Event Location Runway Number and Location 09
Runway Length 6200
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --