Hawk's Nest Airport
Aircraft Accident/Incident Report

Moscow, Tennessee 38057
Friday, October 3, 2008 12:15 CDT

NTSB Narrative Summary Released at Completion of Accident

According to the pilot/owner of the Beech F17D Staggerwing biplane, on the day of the accident, he took a passenger on a brief local flight, and then they returned for some landings and takeoffs. The winds were calm, and the first landing was uneventful. The pilot took off again, circuited the traffic pattern, and landed a second time. Shortly after touchdown, the airplane began to "sink." The pilot tried to raise the nose to offload the landing gear, and he shut down the engine, while the airplane continued to settle. The propeller struck the ground, and the airplane settled on the right lower wing before it came to a stop. The aft fuselage, propeller, lower cowl and outboard spar of the right lower wing were damaged. Postaccident examination indicated that the chain used to retract and extend the right main landing gear had fractured, which resulted in the partial retraction of the landing gear. According to maintenance records, the chain was installed new in the airplane in 1969, and it had accumulated approximately 910 hours in service. The pilot/owner estimated that the chain had accumulated 1,800 cycles, with each cycle consisting of one retraction and one extension. Visual examination revealed 29 fractures in the outer chain plates, and two completely fractured outer plates, not including the chain failure point. All fractures were oriented radially with respect to the link pivots. Every outer plate was stamped with the notation "ACME 40 SINGAPORE." The National Transportation Safety Board was unable to determine whether this failure mode was limited to this make and model chain. The airplane was manufactured in 1937, and the manufacturer had not established any time or cycle life limits for the chain.

NTSB Probable Cause Narrative

The mechanical failure of the landing gear actuation chain.

Event Information

Type of Event Accident
Event Date 10/3/2008
Event Day of the Week Friday
Time of Event 1215
Event Time Zone Central Daylight Time
Event City Moscow
Event State TENNESSEE
Event Country --
Zipcode of the event site 38057
Event Date Year 2008
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 350706N
Event Location Longitude 0892204W
Event Location Airport Hawk's Nest Airport
Event Location Nearest Airport ID 4TN3
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 410
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1255 Central Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID OLV
Elevation of weather observation facility 402
Distance of event from weather observation facility (units?) 20
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 22
Dew Point at event time (in degress fahrenheit) 7
Wind Direction (degrees magnetic) --
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.07
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 24776
NTSB Notification Source Operator
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Dec 11 2008 4:07PM
User who most recently changed record grer
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N18555
NTSB Number ERA09CA006
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BEECH
Aircraft Model F17D
Aircraft Series Identifier --
Aircraft Serial Number 157
Certified Max Gross Weight 3590
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 5
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Apr 23 2008 12:00AM
Airframe hours since last inspection --
Airframe Hours 2922
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type C91-A
Aircraft Owner Name BTB Limited
Aircraft Owner Street Address --
Aircraft Owner City Wilmington
Aircraft Owner State DE
Aircraft Owner Country USA
Aircraft Owner Zipcode 19810
Operator is an individual? Yes
Operator Name Bruce T Bullion
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Memphis
Operator State TN
Operator Country USA
Operator Zip code 38119
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation --
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 Yes
Departure Airport Code 4TN3
Departure City Moscow
Departure State TN
Departure Country USA
Departure Time --
Departure Time Zone EDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code 4TN3
Destination City Moscow
Destination State TN
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Dec 11 2008 4:08PM
User who most recently changed record grer
Since inspection or accident Last Inspection
Event Location Runway Number and Location 36
Runway Length 4000
Runway Width 60
Sight Seeing flight No
Air Medical Flight No
Medical Flight --