Ontario International Airport
Aircraft Accident/Incident Report

Ontario, California 91761
Monday, July 14, 1997 20:34 PDT

NTSB Narrative Summary Released at Completion of Accident

The aircraft was descending on radar vectors for the final approach course when the crew noticed a red laser beam that swept across the cockpit several times. A few seconds later, the laser encounter reoccurred. The aircraft was several miles from the approach end of the runway when the crew saw the laser emanating from a point on the ground north of their position. The crew notified air traffic control of the incident. There was no injury to anyone onboard the aircraft. Investigators from the FDA, the FBI, as well as airborne law enforcement personnel were notified; however, the source of the light remains undetermined. There were no NOTAMs in effect for laser light activity in the area at the time of the incident.

NTSB Probable Cause Narrative

a laser light source of undetermined origin directed toward the cockpit window of an aircraft in-flight by a person or persons unknown.

Event Information

Type of Event Incident
Event Date 7/14/1997
Event Day of the Week Monday
Time of Event 2034
Event Time Zone Pacific Daylight Time
Event City ONTARIO
Event State CALIFORNIA
Event Country --
Zipcode of the event site 91761
Event Date Year 1997
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport ONTARIO INTERNATIONAL
Event Location Nearest Airport ID ONT
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 5
Degrees magnetic from airport 80
Airport Elevation 943
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1937 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 80
Weather Observation Facility ID ONT
Elevation of weather observation facility 943
Distance of event from weather observation facility (units?) 5
Time Zone of the weather observation PDT
Lighting Conditions Dusk
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) 15
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) 14
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Unknown
Wind Speed (knots) 12
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 113
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 5040
NTSB Notification Source --
NTSB Notification Date Jul 14 1997 12:00AM
NTSB Notification Time 2130
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:25PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N956UA
NTSB Number LAX97IA243
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage None
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Boeing
Aircraft Model 737-522
Aircraft Series Identifier 737-522
Aircraft Serial Number 26704
Certified Max Gross Weight 122500
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 115
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Jun 23 1997 12:00AM
Airframe hours since last inspection 210
Airframe Hours 12180
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name UNITED AIRLINES, INC.
Aircraft Owner Street Address P.O. BOX 66100
Aircraft Owner City CHICAGO
Aircraft Owner State IL
Aircraft Owner Country
Aircraft Owner Zipcode 60666
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 UALA
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 Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code SFO
Departure City SAN FRANCISCO
Departure State CA
Departure Country
Departure Time 1938
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code ONT
Destination City
Destination State
Destination Country
Specific Phase of Flight Approach
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 26R
Runway Length 12200
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --