Aircraft Accident/Incident Report

Denver, Colorado
Friday, August 19, 1983 18:20 MDT

NTSB Narrative Summary Released at Completion of Accident

THE ACFT WAS DESCENDING FROM FL 410 WITH THE THROTTLES AT IDLE. AS POWER WAS ADDED AT FL 295 THE LEFT ENG SURGED & EXCEEDED MAX EGT. 18 SECS LATER THE RIGHT ENG SURGED & EXCEEDED ITS MAX EGT. THE LEFT & RIGHT ENGS WERE SHUT DOWN AT FL 200 & 177 RESPECTIVELY. THE ENGS WERE SUCCESSFULLY RESTARTED ABOUT FL 150. THE INABILITY OF THE ENGS TO ACCELERATE AFTER THE MANUALLY INDUCED SURGE WAS DUE TO CONTAMINATED FUEL NOZZLES WHICH SIGNIFICANTLY REDUCED COMBUSTION CHAMBER EFFICIENCIES & WHICH RESULTED IN A SUBIDLE STALL.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Incident
Event Date 8/19/1983
Event Day of the Week Friday
Time of Event 1820
Event Time Zone Mountain Daylight Time
Event City DENVER
Event State COLORADO
Event Country --
Zipcode of the event site
Event Date Year 1983
Event Date Month 8
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 46
Degrees magnetic from airport 240
Airport Elevation --
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1850 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 240
Weather Observation Facility ID DEN
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 40
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 25000
Lowest Non-Ceiling Height 7500
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 40
Air Temperature at event time (in degrees celsius) 28
Dew Point at event time (in degress fahrenheit) 11
Wind Direction (degrees magnetic) 160
Variable Wind Indicator Unknown
Wind Speed (knots) 9
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
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 205
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 5119
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 26408
Date of most recent change to record Jan 2 2001 9:15AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N609UA
NTSB Number DCA83IA035
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 767
Aircraft Series Identifier 767
Aircraft Serial Number 21870
Certified Max Gross Weight 302000
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 197
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours 2372
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name UNITED AIRLINES
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 LAX
Departure City LOS ANGELES
Departure State CA
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:31AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --