Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
San Francisco, California
Saturday, March 27, 2010 11:12 PDT
NTSB Narrative Summary Released at Completion of Accident
An operational error occurred when a Boeing 777 and a Cessna 182 transiting the Class B surface area passed within approximately 480 feet laterally and 300 feet vertically of each other. Both airplanes were under control of air traffic control at the time of the incident.
Postincident investigation determined that the local controller issued a takeoff clearance to the Boeing 777 without resolving a potential conflict with the Cessna, which was southbound just west of the airport. The controller attempted to establish approved separation between the two airplanes after the Boeing departed, but was unable to do so. The pilot of the Cessna took evasive action to pass behind the Boeing. Review of tower procedures revealed deficiencies that permitted aircraft to cross the runway 28L/R departure corridor while the runways were active, facilitating conflicts of this nature.
NTSB Probable Cause Narrative
The local controller's issuance of a takeoff clearance to the Boeing 777 without ensuring that approved separation would exist with the Cessna 182. Contributing to the incident were tower procedures that permitted transitioning aircraft to cross the runway 28 departure corridor at low altitude while runways 28L/R were in use.
Event Information
| Type of Event | Incident |
| Event Date | 3/27/2010 |
| Event Day of the Week | Saturday |
| Time of Event | 1112 |
| Event Time Zone | Pacific Daylight Time |
| Event City | San Francisco |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | -- |
| Event Date Year | 2010 |
| Event Date Month | 3 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | -- |
| Event Location Nearest Airport ID | -- |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | -- |
| Investigator's weather source | -- |
| Time of the weather observation | |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | -- |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | -- |
| Lighting Conditions | -- |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | -- |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | -- |
| Air Temperature at event time (in degrees celsius) | -- |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | -- |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | -- |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | -- |
| 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 | 268 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 29189 |
| NTSB Notification Source | United Airlines |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Dec 15 2011 1:18PM |
| User who most recently changed record | hopj |
| Basic weather conditions | -- |
| FAA District Office | -- |
Aircraft Involved |
||
|---|---|---|
Aircraft #1 |
Aircraft #2 |
|
| Aircraft Registration Number | -- | -- |
| NTSB Number | OPS10IA020A | OPS10IA020B |
| Missing Aircraft Indicator | -- | -- |
| Federal Aviation Reg. Part | -- | -- |
| Type of Flight Plan filed | IFR | VFR |
| Flight plan Was Activated? | Yes | -- |
| Damage | None | None |
| Aircraft Fire | None | None |
| Aircraft Explosion | None | -- |
| Aircraft Manufacturer's Full Name | BOEING | CESSNA |
| Aircraft Model | 777-222 | 182R |
| Aircraft Series Identifier | -- | -- |
| Aircraft Serial Number | 30549 | 18268457 |
| Certified Max Gross Weight | -- | -- |
| Aircraft Category | Airplane | Airplane |
| Aircraft Registration Class | -- | -- |
| Aircraft is a homebuilt? | No | No |
| Flight Crew Seats | -- | -- |
| Cabin Crew Seats | -- | -- |
| Passenger Seats | -- | -- |
| Total number of seats on the aircraft | 400 | 4 |
| Number of Engines | 2 | 1 |
| Fixed gear or retractable gear | Fixed | Fixed |
| Aircraft, Type of Last Inspection | -- | -- |
| Date of Last Inspection | -- | -- |
| Airframe hours since last inspection | -- | -- |
| Airframe Hours | -- | -- |
| ELT Installed | Unknown | Unknown |
| ELT Activated | Unknown | Unknown |
| ELT Aided Location of Event Site | Unknown | Unknown |
| ELT Type | -- | -- |
| Aircraft Owner Name | -- | -- |
| Aircraft Owner Street Address | 1200 E ALGONQUIN RD | 2443 FILLMORE ST # 339 |
| Aircraft Owner City | ELK GROVE VILLAGE | SAN FRANCISCO |
| Aircraft Owner State | IL | CA |
| Aircraft Owner Country | USA | USA |
| Aircraft Owner Zipcode | 60007 | 94115-1814 |
| Operator is an individual? | No | No |
| Operator Name | -- | -- |
| Operator Same as Owner? | No | No |
| Operator Is Doing Business As | -- | -- |
| Operator Address Same as Owner? | No | No |
| Operator Street Address | -- | -- |
| Operator City | -- | -- |
| Operator State | -- | -- |
| Operator Country | USA | USA |
| Operator Zip code | -- | -- |
| Operator Code | UALA | -- |
| Owner has at least one certificate | Yes - certificate holder | None |
| Other Operator of large aircraft? | No | No |
| Certified for Part 133 or 137 Operation | -- | -- |
| Operator Certificate Number | UALA011A | -- |
| Indicates whether an air carrier operation was scheduled or not | Scheduled | -- |
| Indicates Domestic or International Flight | International | -- |
| Operator carrying Pax/Cargo/Mail | Passenger Only | -- |
| Type of Flying (Per_Bus / Primary) | -- | Personal |
| Second Pilot on Board | -- | No |
| Departure Point Same as Event | Yes | No |
| Departure Airport Code | -- | -- |
| Departure City | San Francisco | Unknown |
| Departure State | CA | -- |
| Departure Country | USA | USA |
| Departure Time | 1112 | -- |
| Departure Time Zone | PDT | -- |
| Destination Same as Local Flt | -- | -- |
| Destination Airport Code | ZBAA | kpao |
| Destination City | Beijing | Palo Alto |
| Destination State | -- | CA |
| Destination Country | CH | USA |
| Specific Phase of Flight | -- | -- |
| Report sent to ICAO? | -- | -- |
| Evacuation occurred | -- | -- |
| Date of most recent change to record | Aug 20 2010 12:17PM | Nov 21 2011 10:41AM |
| User who most recently changed record | misp | broda |
| Since inspection or accident | -- | -- |
| Event Location Runway Number and Location | -- | -- |
| Runway Length | -- | -- |
| Runway Width | -- | -- |
| Sight Seeing flight | No | No |
| Air Medical Flight | No | No |
| Medical Flight | -- | -- |