Individually Owned: 150,657
Corporate Owned: 137,281
Cordova Airport
Aircraft Accident/Incident Report
Cordova, Alaska 99574
Tuesady, February 20, 2007 8:20 AST
NTSB Narrative Summary Released at Completion of Accident
The airline transport certificated pilot was landing the retractable gear airplane on a hard surfaced runway at the conclusion of an air taxi cargo flight. During the landing roll, the pilot reported that the airplane veered to the right, and he was unable to maintain directional control. The right main landing gear subsequently collapsed, resulting in substantial damage to the right wing spar. Inspection by the NTSB investigator-in-charge and company maintenance personnel, disclosed that the right main landing gear scissor link/strut became disconnected, which allowed the right main wheel assembly to turn sideways and overload the gear leg. Examination of the linkage revealed that the bolt securing the scissors/linkage had pulled through the washer adjacent to the scissor bushing opening, and ultimately through the bushing, disconnecting the linkage. The manufacturer of the airplane issued Service Letter ME-83-37, dated November 23, 1983, that recommended the original equipment outer main landing gear scissors link washers be replaced with larger, more robust washers for "...improved service life and main landing gear alignment retention." The operator had not complied with the nonmandatory service letter, and the airplane was operated with the smaller washers.
NTSB Probable Cause Narrative
The failure of the right main landing gear linkage during the landing roll, which resulted in a loss of directional control and the collapse of the right main landing gear. A factor associated with the accident was the failure of company maintenance personnel to comply with a maintenance service letter issued by the airplane manufacturer.
Event Information
| Type of Event | Accident |
| Event Date | 2/20/2007 |
| Event Day of the Week | Tuesday |
| Time of Event | 820 |
| Event Time Zone | Atlantic Standard Time |
| Event City | Cordova |
| Event State | ALASKA |
| Event Country | -- |
| Zipcode of the event site | 99574 |
| Event Date Year | 2007 |
| Event Date Month | 2 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 603238N |
| Event Location Longitude | 1454336W |
| Event Location Airport | Cordova |
| Event Location Nearest Airport ID | CDV |
| 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 | 12 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 853 Atlantic Standard Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | PACV |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | AST |
| Lighting Conditions | Dawn |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 9000 |
| 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) | -5 |
| Dew Point at event time (in degress fahrenheit) | -25 |
| Wind Direction (degrees magnetic) | 5 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 4 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.14 |
| 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 | 1 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 21993 |
| NTSB Notification Source | FAA, ANC ROC |
| NTSB Notification Date | Feb 20 2007 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Aug 30 2007 12:18PM |
| User who most recently changed record | NTSB\lema |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Anchorage |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N402ET |
| NTSB Number | ANC07LA021 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | Company VFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | 402C |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 402C0054 |
| Certified Max Gross Weight | 7210 |
| 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 | 2 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | Feb 1 2007 12:00AM |
| Airframe hours since last inspection | 10 |
| Airframe Hours | 15999 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Arctic Air Group |
| Aircraft Owner Street Address | P.O. Box 190228 |
| Aircraft Owner City | Anchorage |
| Aircraft Owner State | AK |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 99519 |
| Operator is an individual? | No |
| 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 | -- |
| 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 | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Cargo |
| Type of Flying (Per_Bus / Primary) | -- |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | -- |
| Departure City | Anchorage |
| Departure State | AK |
| Departure Country | USA |
| Departure Time | 717 |
| Departure Time Zone | AST |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | CDV |
| Destination City | Cordova |
| Destination State | AK |
| Destination Country | USA |
| Specific Phase of Flight | Landing - roll |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Aug 15 2007 2:06PM |
| User who most recently changed record | ntsb\labj |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 09 |
| Runway Length | 7500 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |