Sheridan County Airport
Aircraft Accident/Incident Report

Sheridan, Wyoming 82801
Saturday, November 20, 1999 21:00 MST

NTSB Narrative Summary Released at Completion of Accident

The pilot said that this was the first flight after the annual inspection. When he put the leading gear handle down for landing, he didn't get a positive gear lock light, so he cycled the leading gear several times in an attempt to get a positive gear down and locked indication. He attempted to hand pump the gear down, but still had no positive down and locked light. He landed the airplane, and during the landing roll the right main landing gear failed. Postaccident examination of the engine driven hydraulic pump pressure revealed that its output was 200 pounds per square inch (psi). The maintenance personnel that worked on the airplane said that normal pump pressure output was 2,725 psi. The hydraulic pump was replaced, and the landing gear cycled normally.

NTSB Probable Cause Narrative

The partial failure of the engine driven hydraulic pump.

Event Information

Type of Event Accident
Event Date 11/20/1999
Event Day of the Week Saturday
Time of Event 2100
Event Time Zone Mountain Standard Time
Event State WYOMING
Event Country --
Zipcode of the event site 82801
Event Date Year 1999
Event Date Month 11
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Nearest Airport ID SHR
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 4021
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 2151 Mountain Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID SHR
Elevation of weather observation facility 4021
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation MST
Lighting Conditions Night/Bright
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) 10
Air Temperature at event time (in degrees celsius) 1
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1387
NTSB Notification Source --
NTSB Notification Date Nov 20 1999 12:00AM
NTSB Notification Time 1053
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Jan 10 2001 9:53AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N3928Y
NTSB Number DEN00LA020
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 210D
Aircraft Series Identifier 210D
Aircraft Serial Number 21058428
Certified Max Gross Weight 3100
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 6
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 20 1999 12:00AM
Airframe hours since last inspection 1
Airframe Hours 3725
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name JOHN W. KRENEK
Aircraft Owner Street Address 2009 LIBERTY CT.
Aircraft Owner City SHERIDAN
Aircraft Owner State WY
Aircraft Owner Country
Aircraft Owner Zipcode 82801
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 BIL
Departure City BILLINGS
Departure State MT
Departure Country
Departure Time 2025
Departure Time Zone MST
Destination Same as Local Flt crash at destination city
Destination Airport Code SHR
Destination City
Destination State
Destination Country
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 10 2001 12:27PM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 14
Runway Length 8300
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --