Washington Dulles Internationa Airport
Aircraft Accident/Incident Report

Dulles, Virginia 20166
Wednesday, June 8, 2005 21:37 EDT

NTSB Narrative Summary Released at Completion of Accident

During the approach, the flightcrew was unable to get the right main landing gear extended and locked. After several attempts, while conferring with the checklist and company personnel, the flightcrew performed an emergency landing with the unsafe landing gear indication. During the landing, the right main landing gear slowly collapsed, and the airplane came to rest off the right side of the runway. Examination of the right main landing gear revealed that the retract actuator fitting was secured with two fasteners, a smaller bolt, and a larger bolt. The nut and cotter key were not recovered with the smaller bolt, and 8 of the 12 threads on the smaller bolt were stripped consistent with an overstress pulling of the nut away from the bolt. The larger bolt was bent and separated near the head, consistent with a tension and overstress separation as a result of the smaller bolt failure. The overstress failures were consistent with the right main landing gear not being locked in the extended position when aircraft weight was applied; however, examination of the right main landing gear down lock system could not determine any pre-impact mechanical malfunctions. Further, the right main landing gear retract actuator was tomography scanned, and no anomalies were noted. The unit was then functionally tested at the manufacturer's facility, under the supervision of an FAA inspector. The unit tested successfully, with no anomalies noted.

NTSB Probable Cause Narrative

Failure of the right main landing gear to extend and lock for undetermined reasons, which resulted in the right main landing gear collapsing during touchdown.

Event Information

Type of Event Incident
Event Date 6/8/2005
Event Day of the Week Wednesday
Time of Event 2137
Event Time Zone Eastern Daylight Time
Event City Dulles
Event State VIRGINIA
Event Country --
Zipcode of the event site 20166
Event Date Year 2005
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 385640N
Event Location Longitude 0772721W
Event Location Airport Washington Dulles Internationa
Event Location Nearest Airport ID IAD
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport --
Airport Elevation 313
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 2151 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID IAD
Elevation of weather observation facility 131
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation EDT
Lighting Conditions Night
Lowest Ceiling Height --
Lowest Non-Ceiling Height 20000
Sky/Lowest/Cloud Conditions Few
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) 24
Dew Point at event time (in degress fahrenheit) 17
Wind Direction (degrees magnetic) 200
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 4
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.99
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 30
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 20011
NTSB Notification Source FAA EROC
NTSB Notification Date Jun 8 2005 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Aug 29 2006 3:49PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Dulles, VA

Aircraft Involved

Aircraft #1

Aircraft Registration Number N40SZ
NTSB Number NYC05IA093
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? Yes
Damage Minor
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Saab-Scania AB (Saab)
Aircraft Model 340A
Aircraft Series Identifier --
Aircraft Serial Number 40
Certified Max Gross Weight 28000
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 --
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Apr 1 2005 12:00AM
Airframe hours since last inspection 164
Airframe Hours 41441
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Lambert Leasing
Aircraft Owner Street Address 21300 Ridgetop Circle
Aircraft Owner City Sterling
Aircraft Owner State VA
Aircraft Owner Country USA
Aircraft Owner Zipcode 20166
Operator is an individual? No
Operator Name Shuttle America Corporation
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 11102 West Perimeter Road
Operator City Fort Wayne
Operator State IN
Operator Country USA
Operator Zip code 46809
Operator Code UHLA
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code HPN
Departure City White Plains
Departure State NY
Departure Country USA
Departure Time 1930
Departure Time Zone EDT
Destination Same as Local Flt crash at destination city
Destination Airport Code IAD
Destination City Dulles
Destination State VA
Destination Country USA
Specific Phase of Flight Emergency landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 10 2006 7:15PM
User who most recently changed record MUZD
Since inspection or accident Time of Accident
Event Location Runway Number and Location 19L
Runway Length 11500
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --