Aircraft Accident/Incident Report

Ocilla, Georgia 31774
Thursday, March 15, 1990 11:10 EST

NTSB Narrative Summary Released at Completion of Accident

THE COMMERCIAL PILOT STATED THAT HE WAS ON AN AERIAL OBSERVATION FLIGHT AT 500 FEET ABOVE GROUND LEVEL WHEN THE AIRCRAFT BEGAN AN UNCONTROLLABLE DESCENT THAT HE THOUGHT WAS DUE TO WINDSHEAR. SUBSEQUENT INSPECTION OF THE AIRCRAFT SHOWED NO PRE-ACCIDENT MECHANICAL MALFUNCTION. INVESTIGATION REVEALED THAT METEOROLOGICAL CONDITIONS AT THE TIME WERE CONDUCIVE FOR THE FORMATION OF LOW LEVEL WINDSHEAR.

NTSB Probable Cause Narrative

THE AIRCRAFT'S ENCOUNTER WITH LOW LEVEL WINDSHEAR RESULTING IN AN UNCONTROLLABLE DESCENT.

Event Information

Type of Event Accident
Event Date 3/15/1990
Event Day of the Week Thursday
Time of Event 1110
Event Time Zone Eastern Standard Time
Event City OCILLA
Event State GEORGIA
Event Country --
Zipcode of the event site 31774
Event Date Year 1990
Event Date Month 3
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 --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1050 Eastern Standard Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID AMG
Elevation of weather observation facility 201
Distance of event from weather observation facility (units?) 40
Time Zone of the weather observation EST
Lighting Conditions Day
Lowest Ceiling Height 1400
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) 7
Air Temperature at event time (in degrees celsius) 24
Dew Point at event time (in degress fahrenheit) 19
Wind Direction (degrees magnetic) 160
Variable Wind Indicator Unknown
Wind Speed (knots) 12
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 0
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) 919
NTSB Notification Source --
NTSB Notification Date Mar 15 1990 12:00AM
NTSB Notification Time 1230
Fiche Number and/or location -used to find docket information 42090
Date of most recent change to record Dec 12 2000 4:49PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N733BV
NTSB Number ATL90LA077
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 172N
Aircraft Series Identifier 172N
Aircraft Serial Number 17268176
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 Unknown
Date of Last Inspection --
Airframe hours since last inspection 0
Airframe Hours --
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name DELAND AVIATION
Aircraft Owner Street Address 955 FLIGHTLINE BLVD.
Aircraft Owner City DELANO
Aircraft Owner State FL
Aircraft Owner Country
Aircraft Owner Zipcode 32724
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) Aerial Observation
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code FZG
Departure City FITZGERALD
Departure State GA
Departure Country
Departure Time 1100
Departure Time Zone EST
Destination Same as Local Flt --
Destination Airport Code DED
Destination City DELAND
Destination State FL
Destination Country
Specific Phase of Flight Maneuvering
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 --