Sickles Airport
Aircraft Accident/Incident Report

Lookeba, Oklahoma 73053
Monday, September 6, 1999 7:00 CDT

NTSB Narrative Summary Released at Completion of Accident

The airplane's engine lost power during the takeoff roll. According to the pilot, during the 'run-up before takeoff the engine spit, backfired, and then cleared up.' He initiated the takeoff roll and 'everything was fine for a few seconds,' and then 'about half way down the runway the engine coughed, spit, and backfired again.' Smoke was coming from the engine compartment and entering the cockpit, and subsequently, he aborted the takeoff. The airplane overran the runway and came to rest in a ditch. The pilot/operator removed and examined the engine oil sump from the Pratt and Whitney R-1340-AN1 engine. He observed 'numerous pieces and shavings' of ferrous metal. He stated that the pieces resembled cylinder parts. No further examination of the engine was conducted.

NTSB Probable Cause Narrative

The loss of engine power resulting from a cylinder that failed for an undetermined reason.

Event Information

Type of Event Accident
Event Date 9/6/1999
Event Day of the Week Monday
Time of Event 700
Event Time Zone Central Daylight Time
Event City LOOKEBA
Event State OKLAHOMA
Event Country --
Zipcode of the event site 73053
Event Date Year 1999
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport SICKLES
Event Location Nearest Airport ID NONE
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 --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 756 Central Standard Time
Direction of event from weather observation facility (degrees) 45
Weather Observation Facility ID OKC
Elevation of weather observation facility 1295
Distance of event from weather observation facility (units?) 40
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 25000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 1.5
Air Temperature at event time (in degrees celsius) 19
Dew Point at event time (in degress fahrenheit) 18
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 1973
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) 1205
NTSB Notification Source --
NTSB Notification Date Sep 7 1999 12:00AM
NTSB Notification Time 1000
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Jan 10 2001 10:00AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4919X
NTSB Number FTW99LA247
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Rockwell
Aircraft Model S-2R
Aircraft Series Identifier S-2R
Aircraft Serial Number 2113R
Certified Max Gross Weight 6000
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 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 11 1999 12:00AM
Airframe hours since last inspection 150
Airframe Hours 5759
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name ROBERT S. GUEST
Aircraft Owner Street Address ROUTE 1 BOX 122
Aircraft Owner City LOOKEBA
Aircraft Owner State OK
Aircraft Owner Country
Aircraft Owner Zipcode 73053
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 SNIG
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Agriculture
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Unknown
Indicates Domestic or International Flight Unknown
Operator carrying Pax/Cargo/Mail Unknown
Type of Flying (Per_Bus / Primary) Aerial Application
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code NONE
Departure City
Departure State
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
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 36
Runway Length 1800
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --