Individually Owned: 150,657
Corporate Owned: 137,281
Montague-Yreka Rohrer Fld Airport
Aircraft Accident/Incident Report
Montague, California 96064
Monday, October 4, 1999 23:45 PDT
NTSB Narrative Summary Released at Completion of Accident
The pilot landed, and about 500 to 800 feet beyond his touchdown point, the left main landing gear collapsed. He attempted to maintain direction control with aileron and rudder, but the airplane continued to veer left off the runway toward the ramp area. Before coming to a stop, the right side of the airplane impacted the left wing of a parked Cessna P210N, causing substantial damage to both aircraft. The Cessna P210N then spun around, came out of its tie down chains, and collided with a parked Cessna 150K, inflicting minor damage to it. The pilot reported that all three green landing gear down indicator lights had been illuminated prior to landing. The postcrash examination of the airplane revealed that the left landing gear had retracted up into the gear well, and the nose gear and the right gear appeared to be undamaged. Examination of the landing gear and the associated extension/retraction systems failed to disclose a cause for the collapse. The pilot reported that he hadn't experienced any mechanical problems with the aircraft prior to the accident. He estimated that the winds at the accident airport were from approximately 200 degrees at less than 5 knots.
NTSB Probable Cause Narrative
The collapse of the left main landing gear during the landing rollout for undetermined reasons, which resulted in the pilot's loss of directional control.
Event Information
| Type of Event | Accident |
| Event Date | 10/4/1999 |
| Event Day of the Week | Monday |
| Time of Event | 2345 |
| Event Time Zone | Pacific Daylight Time |
| Event City | MONTAGUE |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 96064 |
| Event Date Year | 1999 |
| Event Date Month | 10 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | MONTAGUE-YREKA ROHRER FLD |
| Event Location Nearest Airport ID | 105 |
| 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 | 2527 |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 2355 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 360 |
| Weather Observation Facility ID | SIY |
| Elevation of weather observation facility | 2648 |
| Distance of event from weather observation facility (units?) | 5 |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Night/Dark |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 12 |
| Dew Point at event time (in degress fahrenheit) | 3 |
| Wind Direction (degrees magnetic) | 220 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | -- |
| 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 | 5 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1832 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Oct 5 1999 12:00AM |
| NTSB Notification Time | 130 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Apr 20 2001 4:06AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N69GP |
| NTSB Number | LAX00LA004 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | 421B |
| Aircraft Series Identifier | 421B |
| Aircraft Serial Number | 421B0027 |
| Certified Max Gross Weight | 7250 |
| 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 | 7 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Sep 17 1999 12:00AM |
| Airframe hours since last inspection | 22 |
| Airframe Hours | 4930 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | GARY THOMPSON |
| Aircraft Owner Street Address | P.O. BOX 642 |
| Aircraft Owner City | MAMMOTH LAKES |
| Aircraft Owner State | CA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 93546 |
| Operator is an individual? | -- |
| 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 | M96A |
| Owner has at least one certificate | Yes - certificate holder |
| 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) | Personal |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | RNO |
| Departure City | RENO |
| Departure State | NV |
| Departure Country | |
| Departure Time | 2230 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | 105 |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | Landing |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Apr 20 2001 4:06AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 14 |
| Runway Length | 3360 |
| Runway Width | 50 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |