Individually Owned: 150,657
Corporate Owned: 137,281
Lake Havasu City Airport
Aircraft Accident/Incident Report
Lake Havasu Cit, Arizona 86404
Monday, April 4, 2005 12:25 MST
NTSB Narrative Summary Released at Completion of Accident
The left main landing gear collapsed during a precautionary landing. The pilot reported that after takeoff, he suspected a landing gear malfunction and returned to the airport. He made a gear up low approach to the airport. Maintenance personnel told him that the left gear was still extended. The pilot cycled the gear down and observed the landing gear lights were illuminated, indicating the gear was down and locked. The pilot made a soft field landing and let the airplane roll to the end of the runway. As he started to turn left, the left main gear collapsed. Post accident examination of the landing gear assembly revealed that the roll pin (part number NAS561P4-28) that retains the attaching shaft to the trunnion assembly had fractured and failed. This allowed the landing gear attaching shaft to shift from its installed position, resulting in the trunnion assembly separating from the landing gear support structure.
NTSB Probable Cause Narrative
the fracture of the landing gear shaft roll pin that resulted in a main gear collapse during the taxi.
Event Information
| Type of Event | Accident |
| Event Date | 4/4/2005 |
| Event Day of the Week | Monday |
| Time of Event | 1225 |
| Event Time Zone | Mountain Standard Time |
| Event City | Lake Havasu Cit |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | 86404 |
| Event Date Year | 2005 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 343416N |
| Event Location Longitude | 1142129W |
| Event Location Airport | LAKE HAVASU CITY |
| Event Location Nearest Airport ID | HII |
| 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 | 781 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1225 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | HII |
| Elevation of weather observation facility | 781 |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | MST |
| 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) | 25 |
| Dew Point at event time (in degress fahrenheit) | -5 |
| Wind Direction (degrees magnetic) | 260 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 15 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 26 |
| Altimeter Setting at event time (in. Hg) | 29.98 |
| 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 | 3 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 20173 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Apr 4 2005 12:00AM |
| NTSB Notification Time | 1300 |
| 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 | WP-FSDO-Scottsdale, AZ |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N637SC |
| NTSB Number | LAX05LA130 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | Company VFR |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | 421B |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 421B0274 |
| Certified Max Gross Weight | 7450 |
| 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 | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | Jan 1 2005 12:00AM |
| Airframe hours since last inspection | 95.1 |
| Airframe Hours | 8443.9 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | SUN WESTERN FLYERS INC |
| Aircraft Owner Street Address | 2095 E. 32ND St. |
| Aircraft Owner City | Yuma |
| Aircraft Owner State | AZ |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 85365 |
| 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 | EKIR |
| 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 | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Positioning |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | HII |
| Departure City | LAKE HAVASU CIT |
| Departure State | AZ |
| Departure Country | USA |
| Departure Time | 1215 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | LAS |
| Destination City | LAS VEGAS |
| Destination State | NV |
| Destination Country | USA |
| Specific Phase of Flight | Landing - roll |
| Report sent to ICAO? | -- |
| Evacuation occurred | No |
| Date of most recent change to record | Jun 2 2006 6:01PM |
| User who most recently changed record | COOS |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | 32 |
| Runway Length | 8000 |
| Runway Width | 100 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |