Aircraft Accident/Incident Report

Watertown, South Dakota 57201
Sunday, August 3, 2008 23:00 CDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that during the cross country night flight he began losing altitude while listening to the automated weather service broadcast for the destination airport. He did not notice the altitude loss. The pilot decided to go to an alternate airport, turned for the alternate, and descended during the turn. At that point he noticed the altitude loss, pulled back on the yoke, and impacted a cornfield. The pilot reported no mechanical malfunctions with the airplane during the accident flight. The pilot's safety recommendation was "haze is deceptive."

NTSB Probable Cause Narrative

The pilot's failure to maintain altitude/clearance from terrain during cruise. Contributing to the accident was the night, the haze, and the tall vegetation.

Event Information

Type of Event Accident
Event Date 8/3/2008
Event Day of the Week Sunday
Time of Event 2300
Event Time Zone Central Daylight Time
Event City Watertown
Event State SOUTH DAKOTA
Event Country --
Zipcode of the event site 57201
Event Date Year 2008
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 445450N
Event Location Longitude 0970917W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport --
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source --
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Night
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling --
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) --
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator --
Wind Gust Indicator Unknown
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 24176
NTSB Notification Source FAA
NTSB Notification Date Aug 4 2008 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Aug 28 2008 3:01PM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Rapid City, SD, FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N16235
NTSB Number CHI08CA235
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 150L
Aircraft Series Identifier --
Aircraft Serial Number 15073562
Certified Max Gross Weight 1600
Aircraft Category Airplane
Aircraft Registration Class --
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 Annual
Date of Last Inspection Dec 1 2007 12:00AM
Airframe hours since last inspection --
Airframe Hours 5331
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name KATY FLYING CLUB INC
Aircraft Owner Street Address --
Aircraft Owner City WATERTOWN
Aircraft Owner State SD
Aircraft Owner Country USA
Aircraft Owner Zipcode 57201
Operator is an individual? No
Operator Name Mitchell S. Pratt
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Castlewood
Operator State SD
Operator Country USA
Operator Zip code 57223
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) Personal
Second Pilot on Board --
Departure Point Same as Event No
Departure Airport Code MHE
Departure City MITCHELL
Departure State SD
Departure Country USA
Departure Time 2200
Departure Time Zone CDT
Destination Same as Local Flt crash at destination city
Destination Airport Code ATY
Destination City Watertown
Destination State SD
Destination Country USA
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Aug 26 2008 5:34PM
User who most recently changed record DINC
Since inspection or accident Last Inspection
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --