Troy Municipal Airport
Aircraft Accident/Incident Report

Troy, Alabama 36081
Wednesday, July 17, 1996 18:10 CDT

NTSB Narrative Summary Released at Completion of Accident

The airplane had been grounded the day before the accident after loss of engine power during takeoff, followed by a successful forced landing on the runway. The airplane had been refueled at the FBO just before the engine lost power. Two mechanics, examined the airplane. The airplane was checked okay, test flown, and remained at the airport overnight. The next day, a pilot arrived to return the airplane to Eglin Air Force Base. The pilot took fuel samples from the main sump, and 'found approximately 2' of water and sediment in the bottom of the sample.' He drained the right tank and stated that he 'found approximately 1' of water and sediment and 1/4' fuel....' He took several more fuel samples, and 'found the fuel to be all clean.' The pilot decided to fly in the traffic pattern before departing for Florida, to test the airplane. He performed an engine run up and found everything 'normal.' He flew twice around the airport traffic pattern, and was on takeoff at an altitude of about 200 to 300 feet above the ground (AGL), when the engine lost complete power. The pilot elected to land in a small field south of the airport, but the airplane struck trees, nosed over, and came to rest upside down. A postaccident test-run of the engine was performed. The engine operated normally above 1500 RPM to 2200 RPM, but it would not idle below 1500 RPM. The carburetor was removed from the engine and examined. The examination revealed water in the bowl, and dirt inside the carburetor.

NTSB Probable Cause Narrative

fuel contamination, which resulted in loss of engine power, a forced landing, and impact with trees. A factor relating to the accident was: inadequate maintenance and/or inspection after the previous loss of engine power and forced landing.

Event Information

Type of Event Accident
Event Date 7/17/1996
Event Day of the Week Wednesday
Time of Event 1810
Event Time Zone Central Daylight Time
Event City TROY
Event State ALABAMA
Event Country --
Zipcode of the event site 36081
Event Date Year 1996
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport TROY MUNICIPAL
Event Location Nearest Airport ID TOI
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport 250
Airport Elevation 397
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 12000
Lowest Non-Ceiling Height 3500
Sky/Lowest/Cloud Conditions Scattered
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) 22
Wind Direction (degrees magnetic) 130
Variable Wind Indicator Unknown
Wind Speed (knots) 2
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
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) 608
NTSB Notification Source --
NTSB Notification Date Jul 17 1996 12:00AM
NTSB Notification Time 2115
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 10:13AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6481L
NTSB Number MIA96LA188
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 152
Aircraft Series Identifier 152
Aircraft Serial Number 15284412
Certified Max Gross Weight 1670
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Apr 23 1996 12:00AM
Airframe hours since last inspection 55
Airframe Hours 5281
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name EGLIN AERO CLUB/USAF
Aircraft Owner Street Address POB 1588
Aircraft Owner City EGLIN AFB
Aircraft Owner State FL
Aircraft Owner Country
Aircraft Owner Zipcode 32542
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) Unknown
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code TOI
Departure City
Departure State
Departure Country
Departure Time 1800
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code VPS
Destination City EGLIN AFB
Destination State FL
Destination Country
Specific Phase of Flight Emergency landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 25
Runway Length 5010
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --