Sheridan Airport
Aircraft Accident/Incident Report

Sheridan, Wyoming 82801
Sunday, May 21, 1989 15:00 MDT

NTSB Narrative Summary Released at Completion of Accident

THE PLT RPRTD THAT AFTER TAKEOFF, THE ENG WAS NOT DEVELOPING SUFFICIENT POWER TO CLIMB OR RETURN TO THE AIRPORT. SUBSEQUENTLY, HE FLEW DOWN A CANYON & LANDED IN A HAY FIELD. DRG THE LANDING ROLL, THE ACFT HIT AN UNSEEN DITCH & THE NOSE GEAR COLLAPSED. AN EXAM OF THE ENG REVEALED THAT THE #4 EXHAUST VALVE WAS STICKING. ELEVATION OF THE ARPT WAS 4012 FT.

NTSB Probable Cause Narrative

BINDING (STUCK) #4 EXHAUST VALVE. HIGH VEGETATION (HAY) AND A HIDDEN OBSTRUCTION (DITCH) WERE CONTRIBUTING FACTORS.

Event Information

Type of Event Accident
Event Date 5/21/1989
Event Day of the Week Sunday
Time of Event 1500
Event Time Zone Mountain Daylight Time
Event City SHERIDAN
Event State WYOMING
Event Country --
Zipcode of the event site 82801
Event Date Year 1989
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport SHERIDAN
Event Location Nearest Airport ID SHR
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 4012
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
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 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) 25
Air Temperature at event time (in degrees celsius) 21
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 310
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 801
NTSB Notification Source --
NTSB Notification Date May 21 1989 12:00AM
NTSB Notification Time 1600
Fiche Number and/or location -used to find docket information 40299
Date of most recent change to record Dec 13 2000 12:40PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7557M
NTSB Number DEN89LA122
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 175
Aircraft Series Identifier 175
Aircraft Serial Number 55857
Certified Max Gross Weight 2350
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 Jan 15 1989 12:00AM
Airframe hours since last inspection 20
Airframe Hours 2636
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name CLAYTON C. COLE
Aircraft Owner Street Address RT 1 BOX 73
Aircraft Owner City BRULE
Aircraft Owner State NE
Aircraft Owner Country
Aircraft Owner Zipcode 69127
Operator is an individual? --
Operator Name CLAYTON C. COLE
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address RT 1 BOX 73
Operator City BRULE
Operator State NE
Operator Country
Operator Zip code 69127
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 Yes
Departure Point Same as Event Yes
Departure Airport Code SHR
Departure City
Departure State
Departure Country
Departure Time 1500
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code 43V
Destination City BRULE
Destination State NE
Destination Country
Specific Phase of Flight Landing
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 --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --