Aircraft Accident/Incident Report

Oswego, New York 13126
Thursday, February 18, 1988 17:00 EDT

NTSB Narrative Summary Released at Completion of Accident

DURING A LOCAL PLEASURE FLIGHT, A DECREASE IN ENGINE POWER WAS EXPERIENCED AND A PUFF OF SMOKE OBSERVED IN THE COCKPIT. THE PILOT APPLIED FULL POWER IN AN ATTEMPT TO RETURN TO THE AIRPORT, BUT REALIZED IT WAS NOT POSSIBLE. THE PILOT PUT THE AIRCRAFT DOWN IN AN OPEN SNOW COVERED FIELD. DURING THE LANDING ROLL OF ABOUT 125 FEET, THE AIRCRAFT FLIPPED OVER. THE CAUSE OF THE POWER LOSS WAS A BROKEN CONNECTING ROD ON THE #5 CYLINDER AND A NUT ON THE ROD END CAP HAD COME OFF.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 2/18/1988
Event Day of the Week Thursday
Time of Event 1700
Event Time Zone Eastern Daylight Time
Event City OSWEGO
Event State NEW YORK
Event Country --
Zipcode of the event site 13126
Event Date Year 1988
Event Date Month 2
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 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 0
Lowest Non-Ceiling Height 5000
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) 15
Air Temperature at event time (in degrees celsius) 4
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 8
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
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 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1480
NTSB Notification Source --
NTSB Notification Date Feb 18 1988 12:00AM
NTSB Notification Time 1900
Fiche Number and/or location -used to find docket information 37605
Date of most recent change to record Dec 13 2000 11:34AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6939M
NTSB Number NYC88LA090
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 STINSON
Aircraft Model 108
Aircraft Series Identifier 108
Aircraft Serial Number 180-4939
Certified Max Gross Weight 2250
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 Annual
Date of Last Inspection Jun 6 1987 12:00AM
Airframe hours since last inspection --
Airframe Hours 1178
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name ROBERT J LYMAN
Aircraft Owner Street Address RD #7 BOX 330
Aircraft Owner City FULTON
Aircraft Owner State NY
Aircraft Owner Country
Aircraft Owner Zipcode 13069
Operator is an individual? --
Operator Name ROBERT LYMAN
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address CO.LINE RD, RD #7, BOX 330
Operator City FULTON
Operator State NY
Operator Country
Operator Zip code 13069
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 NOO
Departure City FULTON
Departure State NY
Departure Country
Departure Time 1530
Departure Time Zone EST
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 Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
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 --