Marathon Airport
Aircraft Accident/Incident Report

Marathon, Florida 33050
Tuesady, October 31, 1989 4:30 EST

NTSB Narrative Summary Released at Completion of Accident

WHILE TAXIING AT A BRISK WALK WITH A QUARTERING RIGHT TAILWIND, THE TAIL RAISED. THE PILOT APPLIED POWER AND AFT ELEVATOR, THEN THE AIRPLANE NOSED OVER.

NTSB Probable Cause Narrative

THE PILOT'S INCORRECT ELEVATOR CONTROL WHILE TAXIING WITH A QUARTERING TAILWIND. CONTRIBUTING TO THE INCIDENT WAS THE TAILWIND CONDITION.

Event Information

Type of Event Incident
Event Date 10/31/1989
Event Day of the Week Tuesday
Time of Event 430
Event Time Zone Eastern Standard Time
Event City MARATHON
Event State FLORIDA
Event Country --
Zipcode of the event site 33050
Event Date Year 1989
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport MARATHON
Event Location Nearest Airport ID MTH
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 6
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 0
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) 0
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 40
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 0
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 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 5029
NTSB Notification Source --
NTSB Notification Date Oct 31 1989 12:00AM
NTSB Notification Time 1300
Fiche Number and/or location -used to find docket information 39228
Date of most recent change to record Dec 13 2000 1:08PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N89B
NTSB Number MIA90IA020
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Minor
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Classic Aircraft Corp.
Aircraft Model YMF-5
Aircraft Series Identifier YMF-5
Aircraft Serial Number YMF5-006
Certified Max Gross Weight 2650
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 3
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name MARATHON FUEL FARM
Aircraft Owner Street Address 8800 OVERSGAS HIGHWAY
Aircraft Owner City MARATHON
Aircraft Owner State FL
Aircraft Owner Country
Aircraft Owner Zipcode 33050
Operator is an individual? --
Operator Name MARATHON AVIATION
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 8800 OVERSEAS HIGHWAY
Operator City MARATHON
Operator State FL
Operator Country
Operator Zip code 33050
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) Business
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code
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 Taxi
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 --