Individually Owned: 151,845
Corporate Owned: 143,699
Aircraft Accident/Incident Report
Cerritos, California 90701
Sunday, August 31, 1986 11:52 PDT
NTSB Narrative Summary Released at Completion of Accident
The Safety Board's full report on this investigation is provided as Aviation Accident Report number AAR-87/07. To obtain a copy of this report, or to view the executive summary online, please see the Web site at http://www.ntsb.gov/publictn/publictn.htm
AT APRX 1140 PDT, A PIPER PA-28, N4891F, DEPARTED TORRANCE, CA ON A VFR FLT TO BIG BEAR, CA. AFTER TAKEOFF, THE PLT TURNED EASTBOUND TWD THE PARADISE VORTAC WITH HIS X-PONDER SQUAWKING 1200. AT THAT TIME, AEROMEXICO FLT 498 (DC-8, MEX REGISTRY XA-JED) WAS ON ARRIVAL, RCVG NORTHBOUND VECTORS FM LAX APCH CTL (AR-1 CTLR) FOR AN ILS APCH TO THE LAX INTL ARPT. AT 1151:04, THE CTLR ASKED FLT 498 TO RDC SPD TO 190 KTS & DSCND FM 7000' TO 6000'. DRG THIS TIME, THE CTLR WAS CTLG OTR TRAFFIC & PROVIDING RADAR ADVISORIES, BUT DIDN'T SEE A DISPLAY FOR N4891F ON HIS SCOPE. AT 1152:09, N4891F & FLT 498 CONVERGED & COLLIDED AT APRX 6560', THEN FELL TO THE GND. AN INV REVEALED N4891F HAD INADVERTENTLY ENTERED THE LAX TERMINAL CONTROL AREA (TCA) & WASN'T IN RADIO CONTACT WITH ATC. LAX TRACON WASN'T EQUIPPED WITH AN AUTO CONFLICT ALERT SYS & THE ANALOG BEACON RESPONSE FM N4891F'S X-PONDER WASN'T DISPLAYED DUE TO EQUIP CONFIGURATION. N4891F'S PSN WAS DISPLAYED BY AN ALPHANUMERIC TRIANGLE, BUT THE PRIMARY TARGET WASN'T DISPLAYED DUE TO AN ATMOSPHERIC INVERSION.
NTSB Probable Cause Narrative
Not Yet Reported
Event Information
| Type of Event | Accident |
| Event Date | 8/31/1986 |
| Event Day of the Week | Sunday |
| Time of Event | 1152 |
| Event Time Zone | Pacific Daylight Time |
| Event City | CERRITOS |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 90701 |
| Event Date Year | 1986 |
| Event Date Month | 8 |
| MidAir Collision Indicator | Yes |
| 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 | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | -- |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1100 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 267 |
| Weather Observation Facility ID | LAX |
| Elevation of weather observation facility | 63 |
| Distance of event from weather observation facility (units?) | 15 |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Day |
| 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) | 14 |
| Air Temperature at event time (in degrees celsius) | 23 |
| Dew Point at event time (in degress fahrenheit) | 16 |
| Wind Direction (degrees magnetic) | 250 |
| 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 | Fatal |
| On Ground, Fatal Injuries | 15 |
| On Ground, Minor Injuries | 8 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | 82 |
| Injury Total Minor | 8 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 90 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 6032 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Aug 31 1986 12:00AM |
| NTSB Notification Time | 0 |
| Fiche Number and/or location -used to find docket information | 31249 |
| Date of most recent change to record | Dec 13 2000 4:46PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
||
|---|---|---|
Aircraft #1 |
Aircraft #2 |
|
| Aircraft Registration Number | XAJED | N4891F |
| NTSB Number | DCA86AA041A | DCA86AA041B |
| Missing Aircraft Indicator | N | N |
| Federal Aviation Reg. Part | Part 129: Foreign | Part 91: General Aviation |
| Type of Flight Plan filed | IFR | VFR |
| Flight plan Was Activated? | -- | -- |
| Damage | Destroyed | Destroyed |
| Aircraft Fire | Ground | None |
| Aircraft Explosion | None | None |
| Aircraft Manufacturer's Full Name | McDonnell Douglas | PIPER |
| Aircraft Model | DC-9-32 | PA-28-181 |
| Aircraft Series Identifier | DC-9-32 | PA-28-181 |
| Aircraft Serial Number | S/N 47356 | 28-779007 |
| Certified Max Gross Weight | 109000 | 2450 |
| Aircraft Category | Airplane | Airplane |
| Aircraft Registration Class | Foreign Registered/U.S. Soil | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No | No |
| Flight Crew Seats | -- | -- |
| Cabin Crew Seats | -- | -- |
| Passenger Seats | -- | -- |
| Total number of seats on the aircraft | 121 | 4 |
| Number of Engines | 2 | 1 |
| Fixed gear or retractable gear | Retractable | Fixed |
| Aircraft, Type of Last Inspection | Unknown | Unknown |
| Date of Last Inspection | -- | -- |
| Airframe hours since last inspection | -- | 0 |
| Airframe Hours | -- | -- |
| ELT Installed | No | Unknown |
| ELT Activated | Unknown | Unknown |
| ELT Aided Location of Event Site | Unknown | Unknown |
| ELT Type | -- | -- |
| Aircraft Owner Name | AERONAVES DE MEXICO, S.A. | WILLIAM KRAMER |
| Aircraft Owner Street Address | MEXICO CITY INT'L ARPT. | 27909 RIDGE COVE COURT |
| Aircraft Owner City | MEXICO D.F. | RANCHO PALOS VE |
| Aircraft Owner State | CA | |
| Aircraft Owner Country | ||
| Aircraft Owner Zipcode | 90274 | |
| Operator is an individual? | -- | -- |
| Operator Name | ||
| Operator Same as Owner? | Yes | Yes |
| Operator Is Doing Business As | -- | -- |
| Operator Address Same as Owner? | Yes | Yes |
| Operator Street Address | ||
| Operator City | ||
| Operator State | ||
| Operator Country | ||
| Operator Zip code | ||
| Operator Code | ||
| Owner has at least one certificate | Yes - certificate holder | None |
| Other Operator of large aircraft? | No | No |
| Certified for Part 133 or 137 Operation | Unknown | Unknown |
| Operator Certificate Number | -- | -- |
| 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) | Unknown | Personal |
| Second Pilot on Board | Yes | No |
| Departure Point Same as Event | No | No |
| Departure Airport Code | TIJ | TOA |
| Departure City | TIJUANA,MEXICO | TORRANCE |
| Departure State | OF | CA |
| Departure Country | ||
| Departure Time | 0 | 1140 |
| Departure Time Zone | PDT | |
| Destination Same as Local Flt | -- | -- |
| Destination Airport Code | LAX | L35 |
| Destination City | LOS ANGELES | BIG BEAR CITY |
| Destination State | CA | CA |
| Destination Country | ||
| Specific Phase of Flight | Approach | Climb |
| Report sent to ICAO? | -- | -- |
| Evacuation occurred | -- | -- |
| Date of most recent change to record | Jan 2 2001 10:30AM | Jan 2 2001 10:36AM |
| User who most recently changed record | dbo | dbo |
| Since inspection or accident | -- | -- |
| Event Location Runway Number and Location | 0 | 0 |
| Runway Length | -- | -- |
| Runway Width | -- | -- |
| Sight Seeing flight | No | No |
| Air Medical Flight | No | No |
| Medical Flight | -- | -- |